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Zte Z2321U, User Manual And Safety Information

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Zte Z2321U User Manual And Safety Information Download Page 46

 

46 

Calendar 

 

To open Calendar, press the 

OK 

key and select 

Calendar 

from standby mode.   

Viewing Your Calendars and Events 

Change Calendar Views 

You can view your calendars in different forms. The app offers three views: Month, Week, and 
Agenda. 

To change calendar views, press the 

Left soft 

key and choose 

View by

, and then select the 

view you prefer. 

View Event Details 

In Agenda or Week view, select an event to view its details. 

In Month view, select a day and then choose an event to view its details. 

Creating an Event 

1.  In any Calendar view, press the 

Left soft

 key and choose

 New event

. 

You can also select a spot in Week view to add an event to that time spot. 

2.  Enter the event details and press the

 Left soft 

key for

 Save

. 

 

 

 

 

 

 

Summary of Contents for Z2321U

Page 1: ...1 Z2321U User Manual and Safety Information ...

Page 2: ...s been designed with the utmost care to ensure the accuracy of its content However all statements information and recommendations contained therein do not constitute a warranty of any kind either expressed or implied Please refer to For Your Safety to be sure to use your phone properly and safely We offer self service for our smart terminal device users Please visit the ZTE official website at www...

Page 3: ...uch marks by ZTE Corporation is under license microSDHC Logo is a trademark of SD 3C LLC Qualcomm Snapdragon processors are products of Qualcomm Technologies Inc Qualcomm and Snapdragon are trademarks of Qualcomm Incorporated registered in the United States and other countries Used with permission Other trademarks and trade names are those of their respective owners Version No R1 0 Edition Time De...

Page 4: ...tem Language 16 Setting the Date and Time 16 Changing Ringtone and Notification Sound 16 Turning On Off Key Tone 17 Adjusting Volumes 17 Switching to Silent Mode 17 Applying New Wallpapers 18 Changing Screen Brightness 18 Changing Font Size 18 Protecting Your Phone With Screen Lock 18 Knowing the Basics 19 Monitoring the Phone Status 19 Managing Notifications 19 Entering Text 20 Opening and Switch...

Page 5: ... Multi party Calls 34 Adjusting Your Call Settings 35 Contacts 39 Checking Contact Details 39 Adding a New Contact 39 Setting Up Your Own Profile 39 Importing Exporting and Sharing Contacts 40 Working With Groups 41 Searching for a Contact 42 Editing Contacts 42 Messages 44 Opening the Messaging Screen 44 Sending a Message 44 Replying to a Message 45 Forwarding a Message 45 Changing Message Settin...

Page 6: ...h Albums 52 Working With Pictures 53 Playing Videos 53 Music 54 Copying Music Files to Your Phone 54 Viewing Your Music Library 54 Playing Music 55 Managing Playlists 55 Video Player 56 Opening the Video Library 56 Playing and Controlling Videos 56 Managing Video Files 56 FM Radio 57 Scanning and Saving Channels 57 Listening to FM Radio 57 To turn off FM radio immediately 57 Sound Recorder 58 Reco...

Page 7: ...works 60 Device 61 System 62 Troubleshooting 64 For Your Safety 67 General Safety 67 FCC RF Exposure Information SAR 68 FCC Regulations 69 Hearing Aid Compatibility HAC Regulations for Mobile Phones 70 CTIA Requirements 71 Product Handling 72 Electrical Safety 75 Radio Frequency Interference 76 Explosive Environments 77 ...

Page 8: ...8 Getting Started Getting to Know Your Phone External screen Camera Headset jack Auxiliary microphone Speaker Back cover Volume key ...

Page 9: ...9 Internal screen 4 way navigation and OK center key Camera key Send key Delete key Earpiece Charging micro USB jack Left soft key Recent apps key Right soft key Power end key Main microphone ...

Page 10: ...launch the Camera app Delete key Delete text before the cursor while editing text Power end key Press and hold to turn on or off airplane mode power off or restart the phone Press to end a call or cancel a call attempt Press to return to the home screen 4 way navigation and OK key From standby mode press up down left right to activate pre set functions Press up down left right to move the highligh...

Page 11: ...or the nano SIM card 1 Remove the back cover if the battery is installed removed it 2 Place the nano SIM card with the chip facing downwards and the cut corner oriented as shown and slide the nano SIM card into the card holder WARNING To avoid damage to the phone do not use any other kind of SIM card or any non standard ...

Page 12: ...d slot NOTE Some applications may require a microSDHC card to work normally or may store certain data on it Therefore it is recommended that you keep a microSDHC card installed and not remove or replace it randomly 4 Insert the battery by aligning the metal contacts on the battery with the metal contacts in the battery compartment Gently push down on the battery until it clicks into place ...

Page 13: ... tell you the exact battery level each time you wake up your phone WARNING Use only ZTE approved chargers and cables The use of unapproved accessories could damage your phone or cause the battery to explode 1 Connect the adapter to the charging jack Ensure that the adapter is inserted with the correct orientation Do not force the connector into the charging jack 2 Connect the charger to a standard...

Page 14: ... the screen backlight time Lower the screen brightness Turn Bluetooth off when not in use Powering On Off Press and hold the Power end key to turn on your phone To turn it off press and hold the Power end key to open the options menu and then select Power off Setting Up for the First Time When you first power on your phone after you purchase it or reset it to factory settings you need to do some s...

Page 15: ...your phone the phone is in standby mode the standby mode is the starting point for your phone s applications functions and menus Status Notifications The function for the Right soft key The function for the Left soft key The function for the OK key ...

Page 16: ...by yourself 4 Set the date time time zone and date time format Changing Ringtone and Notification Sound You can customize the default ringtone for incoming calls and the default notification sound quickly 1 From standby mode press the OK key and choose Settings 2 Select Sound profiles Sound 3 Press the Left soft key for Edit 4 Select Phone ringtone or Default notification sound 5 Scroll through th...

Page 17: ...You can adjust the media volume when a media application is in use by pressing the Volume Up Down key If no media application is active press the Volume Up Down key to adjust ringtone volume or the earpiece volume during a call Switching to Silent Mode You can set the phone to silent mode by using one of the following methods Keep pressing the Volume Down key when no media application is active Wh...

Page 18: ...rightness 3 Press the Left Right navigation key to adjust the brightness manually Changing Font Size 1 From standby mode press the OK key and choose Settings 2 Select Device Display Font size 3 Select Small Default or Large Protecting Your Phone With Screen Lock You can protect your phone by creating a screen lock When it is enabled you need to enter a numeric PIN to unlock the phone s screen and ...

Page 19: ...Silent mode no interruptions Airplane mode Battery low Bluetooth on Battery partially drained Speaker on Battery full Phone microphone off Battery charging Alarm set Signal strength Managing Notifications Notification Icons The status bar at the top of the home screen provides notification icons on the left Below are some of the icons you may see New SMS Downloading data New MMS USB connected Miss...

Page 20: ... a space T12 abc T12 Abc T12 ABC Mode The predictive text method is based on a built in dictionary and generates words from the combination of letters pressed Press each key once that corresponds to the letter you want to enter The letters are shown on the display as they are entered The list of candidate words changes as each key is pressed When the candidate words are displayed press the 4 way n...

Page 21: ...ion you can set the default input method Opening and Switching Apps Open an App 1 From standby mode press the OK key 2 Press the 4 way navigation key and the OK key to select and open the app Switch Between Recently Opened Apps 1 Press the Recent apps key A list of the names and thumbnails of apps you ve used recently opens If you ve been using more apps recently than can fit on the screen press t...

Page 22: ...de press the OK key 2 Select Settings Wireless networks Mobile network 3 Press the OK key to enable data access over the mobile network Press again to disable data access To get data services when roaming 1 From standby mode press the OK key 2 Select Settings Wireless networks Mobile network 3 Using the Down navigation key to select International roaming and press the OK key NOTE International roa...

Page 23: ...ey 2 Select Settings Wireless networks Mobile network Access Point Names 3 Press the Left soft key and choose New APN 4 Select each item to enter the information you get from your service provider 5 Press the Left soft key and choose Save to complete NOTE To set the APN to default settings Press the Left soft key and choose Reset to default Connecting to Wi Fi Wi Fi is a wireless networking techno...

Page 24: ...notifications Add a Wi Fi Network You can add a Wi Fi network if the network does not broadcast its name SSID or add a Wi Fi network when you are out of range To connect to a secured network you first need to get the security details from the network s administrator 1 From standby mode press the OK key 2 Select Settings Wireless networks Wi Fi 3 Turn on the Wi Fi if Wi Fi is off 4 Using the Down n...

Page 25: ...S PIN number displays on the screen Enter the PIN number into the access point s setup page After entering the PIN number your phone automatically finds the access point and configures the connection NOTE For detailed information about the WPS feature of the access point please refer to its user documents Forget a Wi Fi Network You can make your phone forget about the details of a Wi Fi network th...

Page 26: ...WPS Push Button Connect to a WPS network via the push button method WPS Pin Entry Connect to a WPS network via the phone PIN method MAC address Check the MAC address IP address Check the phone s IP address Connecting to Bluetooth Devices Bluetooth is a short range wireless communication technology Phones or other devices with Bluetooth capabilities can exchange information wirelessly within a dist...

Page 27: ...een the two devices and press the OK key for Pair Alternately enter a Bluetooth passkey and press the OK key for Pair Pairing is successfully completed when the other device accepts the connection or the same passkey is entered NOTE The Bluetooth passkey may be fixed for certain devices such as headsets and handsfree car kits You can try entering 0000 or 1234 the most common passkeys or refer to t...

Page 28: ...your phone and your computer via USB while the phone is USB tethered 1 Connect your phone to your computer with a USB cable 2 From standby mode press the OK key 3 Select Settings Wireless networks Tethering 4 Press the OK key to switch on USB tethering A new network connection will be created on your computer NOTE To stop sharing your data connection switch off USB tethering or disconnect the USB ...

Page 29: ...ne of the following options Charge only Charge your phone via USB Install driver Install the driver needed for some USB connection modes such as MTP Media device MTP Transfer media files on Windows or Mac Connect With Windows Media Player You can sync music on your phone and the computer installed with Windows Media Player 1 Connect the phone with your computer via USB and choose Media device MTP ...

Page 30: ...30 The formatting procedure erases all the data on the microSDHC card after which the files CANNOT be retrieved ...

Page 31: ...call immediately 2 Press the Send key to call the number NOTE To make an international call press and hold the key to enter the plus symbol Next enter the country code followed by the city area code and then the phone number End a Call During a call press the Power end key Answering or Rejecting Calls When you receive a phone call the external screen is lighted when flip is close or the Incoming C...

Page 32: ...a list of all the calls you ve placed received or missed It provides a convenient way to redial a number return a call or add a number to your Contacts To open the call log press the OK key and choose Recent Calls from standby mode Place a Call From the Call Log 1 Open the call log 2 Select a number for more information about the call or press the Send key to call back Add a Call Log Number as a C...

Page 33: ...utting the contact name you want to search for at the bottom of the screen 3 Highlight a contact or number and press the Send key to call it Checking Voicemail If you have set the phone to divert calls to voicemail callers can leave voicemail messages when they cannot reach you Here s how to check the messages they left 1 From standby mode press and hold the 1 key on the hard keypad If prompted en...

Page 34: ...eatures are available you can switch between two calls or set up a conference call NOTE The call waiting and three way call features need network support and may result in additional charges Please contact your service provider for more information Switch Between Current Calls When you re on a call and another call comes in your phone screen informs you and displays the caller ID To respond to an ...

Page 35: ...ler to call the corresponding speed dial number The number key 1 is reserved to speed dial your voicemail To assign a speed dial key 1 From standby mode press the OK key and choose Settings Wireless networks Call settings Speed dial 2 Select a speed dial key 3 Using the Down navigation key to select a contact from the contact list 4 Press the OK key for Select Set Voicemail 1 From standby mode pre...

Page 36: ...s Carrier Setting Additional settings 2 Select Caller ID to choose whether your number is displayed when someone receives your outgoing call Or enable Call waiting to get notified of incoming calls during a call NOTE Please contact the service provider to check whether the caller ID and call waiting features are available Open to Answer When you receive a call you can open the flip to answer the c...

Page 37: ...this mode to talk through the phone and receive responses via text messages Set Hearing Aids Your phone supports the Hearing Aid Compatibility HAC function When you turn on the hearing aid compatibility and use a hearing aid with a telecoil to answer the phone it will help you hear more clearly during the phone call 1 From standby mode press the OK key and choose Settings Wireless networks Call se...

Page 38: ...n a call 1 From standby mode press the OK key and choose Settings Wireless networks Call settings Auto answer 2 Press the OK key to turn on Auto answer feature 3 Select Call duration to set the wait time 4 Select Auto answer conditions to set the condition when auto answer works View Call Timers You can view your call and data details From standby mode press the OK key and choose Settings Wireless...

Page 39: ...w its details Adding a New Contact 1 From standby mode press the Left soft key 2 Press the Left soft key and choose New contact 3 Enter the information of the contact such as name phone numbers and so on 4 Press the OK key for Save Setting Up Your Own Profile You can create your own name card in your phone 1 From standby mode press the Left soft key 2 Select Set up my profile If a profile has alre...

Page 40: ...and the OK key to choose to import one multiple or all vCard files 4 If prompted press the Left soft key to select the vcf file s and then press the OK key for OK Export Contacts to the Storage 1 From standby mode press the Left soft key 2 Press the Left soft key and choose Import Export Export to storage 3 The phone will prompt you with the name of the vCard file Press the OK key to create the fi...

Page 41: ...from the listed group members Set Up a New Group 1 From standby mode press the Left soft key 2 Select the contact groups tab 3 Press the Left soft key and choose Create group 4 Enter a group name 5 Select Add member and select the contacts you wish to be the group members and press the Left soft key and choose Add member to group 6 If necessary select Default below RINGTONE to set up the ringtone ...

Page 42: ...nput the contact name you want to search for The contacts matched will be listed Editing Contacts Edit Contact Details 1 From standby mode press the Left soft key 2 Select a contact you need to edit 3 Press the OK key for Edit 4 Edit the contact and press the Left soft key and then choose Save Set a Ringtone for a Contact Assign a special ringtone to a contact so you know who is calling when you h...

Page 43: ...Left soft key for Save Delete Contacts 1 From standby mode press the Left soft key 2 Press the Left soft key and choose Multi Select 3 Select the contacts you want to remove 4 Press the Left soft key and choose Delete 5 Press the OK key to confirm ...

Page 44: ...ending a Message 1 From standby mode press the Right soft key 2 Press the Left soft key and choose New message 3 Enter the recipient s phone number s You can also press the OK key for Recipients to add recipients from Recent Calls Contacts or Groups 4 Scroll down to the input text field and enter the content of your text message 5 If you want to send a multimedia message press the Left soft key an...

Page 45: ...choose Insert attach to attach a file to the message if you want to reply with an MMS 3 Press the OK key for Send to send the message Forwarding a Message 1 On the Messaging screen select the thread that has the message you want to forward 2 Select the message 3 Select Forward in the menu that opens 4 Enter a recipient for the message and edit the content if you want 5 Press the OK key for Send to...

Page 46: ...views press the Left soft key and choose View by and then select the view you prefer View Event Details In Agenda or Week view select an event to view its details In Month view select a day and then choose an event to view its details Creating an Event 1 In any Calendar view press the Left soft key and choose New event You can also select a spot in Week view to add an event to that time spot 2 Ent...

Page 47: ...the event press the Left soft key and choose Edit Press the Left soft key to save your changes To delete the event press the Left soft key and choose Delete Press the OK key to delete the event To share the event press the Left soft key and choose Share Select how to share Changing Calendar Settings To change Calendar settings open a Calendar view Week Month or Agenda and press the Left soft key a...

Page 48: ...Web 1 Press the OK key and choose Browser 2 To visit a particular website press the Left soft key and select Type URL 3 Enter the web address and press the OK key for Select 4 To access your bookmarks press the Left soft key and select Bookmarks 5 Highlight a bookmark and press the OK key to visit the website Changing Browser Settings You can configure a number of Browser settings to customize the...

Page 49: ...he Gallery app Capturing a Photo 1 From standby mode press the Camera key 2 Line up your shot in the camera viewfinder Number Function 1 Press the Left soft key to change the camera settings 2 Press the Left navigation key to switch between the camera and camcorder 3 Press the OK key to take a picture 4 Press the Right navigation key to view pictures and videos you have taken 5 Press the Right sof...

Page 50: ...f light to achieve the most natural looking colors for your shots or choose to allow the camera to adjust the white balance automatically Brightness Adjust the brightness To let the camera set the brightness automatically select 0 ISO Adjust the ISO Settings Set the picture size video quality shutter tone or photo auto review Recording a Video 1 From standby mode press the Left navigation key to s...

Page 51: ...between the camera and camcorder 3 Press the OK key to record a video 4 Press the Right navigation key to view pictures and videos you have taken 5 Press the Right soft key to exit 3 Press the OK key to start recording You can also press the Left soft key to pause or resume recording 4 Press the OK key to stop recording ...

Page 52: ...s and videos it contains To share pictures or videos 1 Press the Left soft key and choose Multi select after you open an album to select a picture or a video 2 Select more items that you want to share 3 Press the Left soft key and choose Share 4 Select how you want to share the items To delete albums 1 Press the Left soft key and choose Multi select in the Albums view 2 Select more albums that you...

Page 53: ... detail or browse the album contents in a slideshow Press the OK key to view the picture in fullscreen Press the Right soft key to return to the album Playing Videos 1 Select an album in the gallery and then choose the thumbnail of a video 2 Press the OK key for Play to start playing ...

Page 54: ...e the files in the phone storage and on the microSDHC card 3 Copy the music file from the PC and paste it to the phone storage or microSDHC card Receive via Bluetooth You can receive music files from other devices via Bluetooth See Receive Data via Bluetooth Viewing Your Music Library From standby mode press the OK key and select Multimedia Music and your music library is displayed All your audio ...

Page 55: ...e your music files into sets of songs so that you can play the songs you like in the order you prefer Using the Up Down navigation key to select a song press the Left soft key and choose Add to playlist to add it to a playlist or create a new playlist Using the Up Down navigation key to select a playlist press the Left soft key and choose Delete to delete the playlist Using the Up Down navigation ...

Page 56: ...ng the Right soft key Managing Video Files To delete videos 1 Using the Up Down navigation key to select a video in the video library The video is highlighted 2 Press the Left soft key and choose Multi Select 3 Select a video to remove more videos select them 4 Press the Left soft key and choose Delete OK To share videos 1 Using the Up Down navigation key to select a video in the video library The...

Page 57: ...all while listening to the radio the radio will be turned off Scanning and Saving Channels The first time you plug in a wired headset and open FM Radio you phone scans for all available channels automatically To scan again press the Left soft key and choose Scan All previously saved channels will be removed Listening to FM Radio 1 Press the OK key and select Multimedia FM Radio while the headset i...

Page 58: ...To play any saved memo 1 Press the Left soft key and choose All Recordings to see all recordings 2 Using the Up Down navigation key to select the title of a memo and press the OK key for Play to play it More Apps Clock From standby mode press the OK key and choose Clock The Clock app allows you to check local time in places around the world set alarms and use timers Set a New Alarm 1 Select the ta...

Page 59: ...untdown Select the or tab in the Clock app to use the stopwatch or the countdown timer Stopwatch allows you to record lap times 100 laps at most while countdown allows you to set a time and count down to zero Calculator Press the OK key and select Tools Calculator Modify your number with hard keyboard and 4 way navigation key File Manager Quickly access all of your images videos audio clips and ot...

Page 60: ...works Airplane mode All the phone s radios that transmit voice or data are turned off Wi Fi In the Settings select Wireless networks Wi Fi You can turn Wi Fi on or off and configure your Wi Fi connections See Connecting to Wi Fi Bluetooth In the Settings select Wireless networks Bluetooth Turn Bluetooth on or off and configure your Bluetooth connections See Connecting to Bluetooth Devices Mobile N...

Page 61: ...aring Your Mobile Data Connection Call Settings In the Settings select Wireless networks Call settings to customize the settings for phone calls See Adjusting Your Call Settings Device Display In the Settings select Device Display to configure the following options Brightness level Set the brightness of the display Wallpaper Select a background image for the Home screen Sleep Set the length of tim...

Page 62: ... Protecting Your Phone With Screen Lock Reset Options In the Settings select Device Reset options to manage restoration options and to reset the network setting the app preferences or the phone to factory status Reset Wi Fi mobile Bluetooth Reset all network settings Reset app preferences Reset all app preferences Erase all data factory reset Reset your phone to factory default settings All your p...

Page 63: ...Accessibility In the Settings select System Accessibility to configure accessibility plug ins on your phone such as using Color inversion for users with sight problems System Updates In the Settings select System System updates to check download and install system updates About Phone In the Settings select System About phone to view phone status and legal information ...

Page 64: ...ation where the network signal can be properly received The network is busy at the current time for example during peak times there may be too much network traffic to handle additional calls Avoid using the phone at such times or try again after waiting a short time You are too far away from a base station for your service provider You can request a service area map from your service provider Echo...

Page 65: ...ry charging environment to avoid extremes of temperature Poor contact between the battery and charger Check all connectors to ensure that all connections have been properly made Shortened standby time The standby time is related to your service provider system configuration The same phone used with different service providers systems will not provide exactly the same length of standby time If you ...

Page 66: ...ano SIM card to your service provider for testing nano SIM card inserted improperly Insert the nano SIM card properly Debris on the nano SIM card contacts Use a soft dry cloth to clean the nano SIM card contacts Unable to connect to the network nano SIM card invalid Contact your service provider You are not within the network s service area Check the service area with your service provider Poor si...

Page 67: ...e driving Never text while driving Turn off when near explosive materials or liquids Keep your phone at least 15 mm away from your body while making calls Don t use at gas stations Small parts may cause choking Your phone may produce a bright or flashing light Your phone can produce a loud sound Don t dispose of your phone in fire To prevent possible hearing damage do not listen at high volume lev...

Page 68: ...operating can be well below the maximum value This is because the phone is designed to operate at multiple power levels so as to use only the power required to reach the network In general the closer you are to a wireless base station antenna the lower the power output The exposure standard for wireless devices employing a unit of measurement is known as the Specific Absorption Rate or SAR The SAR...

Page 69: ...eration This equipment has been tested and found to comply with the limits for a Class B digital device pursuant to part 15 of the FCC Rules These limits are designed to provide reasonable protection against harmful interference in a residential installation This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with the instructions may ca...

Page 70: ... have been rated Phones that are rated have the rating on their box or a label located on the box These ratings are not guaranteed Results will vary depending on the level of immunity of your hearing device and the degree of your hearing loss If your hearing device happens to be vulnerable to interference you may not be able to use a rated phone successfully Trying out the phone with your hearing ...

Page 71: ...cture attempt to insert foreign objects into the battery immerse or expose to water or other liquids expose to fire explosion or other hazard Only use the battery for the device for which it is specified Only use the battery with a charging system that has been qualified with the system per CTIA Certification Requirements for Battery System Compliance to IEEE 1725 Use of an unqualified battery or ...

Page 72: ...y Full attention must be given to operating the machinery in order to reduce the risk of an accident Product Handling General Statement on Handling and Use You alone are responsible for how you use your phone and any consequences of its use You must always switch off your phone wherever the use of a phone is prohibited Use of your phone is subject to safety measures designed to protect users and t...

Page 73: ...eating equipment or high pressure containers such as water heaters microwave ovens or hot cooking utensils Otherwise your phone may be damaged Please check local regulations for disposal of electronic products Do not carry your phone in your back pocket as it could break when you sit down Small Children Do not leave your phone and its accessories within the reach of small children or allow them to...

Page 74: ...outs or seizures even if they have never had one before when exposed to flashing lights or light patterns such as when playing games or watching video If you have experienced seizures or blackouts or have a family history of such occurrences please consult a physician To reduce the risk of blackouts or seizures use your phone in a well lit room and take frequent breaks Repetitive Strain Injuries T...

Page 75: ...ly approved accessories Do not connect with incompatible products or accessories Take care not to touch or allow metal objects such as coins or key rings to contact or short circuit the charging port Never puncture the surface of the phone with sharp objects Connection to Vehicles Seek professional advice when connecting a phone interface to the vehicle electrical system Faulty and Damaged Product...

Page 76: ...People with hearing aids or other cochlear implants may experience interfering noises when using wireless devices or when one is nearby The level of interference will depend on the type of hearing device and the distance from the interference source Increasing the separation between them may reduce the interference You may also consult your hearing aid manufacturer to discuss alternatives Medical ...

Page 77: ... atmospheres include fueling areas below decks on boats fuel or chemical transfer or storage facilities and areas where the air contains chemicals or particles such as grain dust or metal powders Blasting Caps and Areas Power off your mobile phone or wireless device when in a blasting area or in areas where signs are posted to power off two way radios or electronic devices to avoid interfering wit...

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