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2 Installation 

Installing the SIM card 

Step 1 

Slide the card cover off.   

Step 2 

Insert the SIM card into the card slot. Ensure that the gold contact area 

faces down and that the beveled edge of the SIM card aligns with that of 

the card slot.   

Step 3 

Slide the card cover back onto the device. 

 

Attention:

 

Before removing the SIM card, ensure that the device is powered off and 

disconnected from the power outlet. 

(Optional) Using the table stand 

You can place the device on a flat surface such as a table or a desk, or hang it on 

a wall. You can also use the table stand on the device to place it upright. 
To use the table stand, insert its latches into the device's table stand slots, as 

shown in the following figure. 

 

Note:

 

 

To ensure good signal reception, place the device in a high place or near a 

window. 

 

To prevent interference caused by radio signals, place the device at least 1 

meter (3.28 feet) away from other electrical devices. 

Summary of Contents for B681

Page 1: ...o purchase them This guide briefly describes the device functions For details about how to set the management parameters see the help information on the web management page 1 Getting to know your device Application scenarios Scenario 1 You can connect your computer to the device to access the Internet The specific connection steps depend on your computer s operating system Follow the displayed ins...

Page 2: ...g WPS connection being set up Off Wi Fi turned off Network status indicator Blinking red fast Subscriber Identity Module SIM card unavailable SIM card not installed or malfunctioning or PIN code not verified Steady yellow device registered with the network Steady green device connected to the Internet Off no signal received Power indicator Steady on device powered on Off device powered off LAN ind...

Page 3: ...red off and disconnected from the power outlet Optional Using the table stand You can place the device on a flat surface such as a table or a desk or hang it on a wall You can also use the table stand on the device to place it upright To use the table stand insert its latches into the device s table stand slots as shown in the following figure Note To ensure good signal reception place the device ...

Page 4: ...ernal antenna indoors You cannot switch between the internal antenna and the external antenna while using a voice or data service Optional Connecting to a telephone If you want to use the device to make voice calls connect the device to a telephone as shown in the following figure Note Skip this section if you do not plan to use the device s voice services Radio signals can interfere with telephon...

Page 5: ...ger than 100 meters 328 feet Connecting to a power outlet Connect a compatible power adapter to the device s power port and then plug the power adapter into a power outlet Note Using an incompatible power adapter may damage the device 3 Powering the device on or off After connecting to a power outlet the device will power on automatically To manually power the device off press and hold until all i...

Page 6: ...ble wireless network connections using your computer s connection manager application Step 3 Connect to the wireless network that has the same service set identification SSID as the device Note If a security mechanism has been enabled for the wireless network connection enter the correct Wi Fi key The SSID and the Wi Fi key are printed on the device label To protect your wireless network from unau...

Page 7: ... the following table Select an appropriate mode according to your data service charging plan For example if you are charged according to the length of time you are connected to the Internet it is recommended that you select manual mode For details about your data service charging plan contact your service provider Mode Description Auto After being powered on the device will automatically connect t...

Page 8: ...e RESET button until all indicators and blink After the factory defaults are restored the device will restart automatically Attention Restoring factory defaults will delete all the device s user defined settings and restore all settings on the web management page to their defaults 8 Further tips If the device does not work properly See the help information on the web management page Restart the de...

Page 9: ...oil depot or chemical plant for example Using your device in these environments increases the risk of explosion or fire In addition follow the instructions indicated in text or symbols Do not store or transport the device in containers with flammable liquids gases or explosives Operating environment Avoid dusty damp or dirty environments Avoid magnetic fields Using the device in these environments...

Page 10: ...ren or pets to bite or suck the device or accessories Doing so may result in damage or explosion The device should be installed and operated with a minimum distance of 20 cm between the radiator and your body Keep the device in a place with good reception The distance between the device and other metal materials such as metal brackets or metal doors and windows should be greater than 25 cm and the...

Page 11: ...d maintenance During storage transportation and operation of the device keep it dry and protect it from collision Keep the device and accessories dry Do not attempt to dry it with an external heat source such as a microwave oven or hair dryer Do not expose your device or accessories to extreme heat or cold These environments may interfere with proper function and may lead to fire or explosion Avoi...

Page 12: ...able 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 cause harmful interference to radio communications However there is no guarantee that interference will not occur in a particular installation If this equipment does cause harmful interf...

Page 13: ...ted by local network operators or network service providers Thus the descriptions herein may not exactly match the product or its accessories which you purchase Huawei reserves the right to change or modify any information or specifications contained in this manual without prior notice and without any liability DISCLAIMER ALL CONTENTS OF THIS MANUAL ARE PROVIDED AS IS EXCEPT AS REQUIRED BY APPLICA...

Page 14: ...e export or import the product mentioned in this manual including the software and technical data therein Privacy Policy To better understand how we protect your personal information please see the privacy policy at http consumer huawei com en privacy policy index htm Please visit www huaweidevice com worldwide support hotline for recently updated hotline and email address in your country or regio...

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