manualshive.com logo in svg

Motorola Moto X Pure Edition, Troubleshooting Manuals

Share
Download
Motorola Moto X Pure Edition Troubleshooting Manuals Download Page 18

  

Moto X Pure Edition/Moto X Style 

Baseband TROUBLESHOOTING GUIDES 

MOTOROLA CONFIDENTIAL 

•

 

Depending on the PCB board variant, there are up to 2 SIM connectors on PCB 

board. 

•

 

Each SIM connector is operated independently with its own power, detection and 

SIM bus interface. 

SIM 

Summary of Contents for Moto X Pure Edition

Page 1: ...Moto X Pure Edition Moto X Style Baseband TROUBLESHOOTING GUIDES MOTOROLA CONFIDENTIAL Moto X Pure Edition Moto X Style Baseband TROUBLESHOOTING GUIDES V1 0 2009 Motorola Proprietary Confidential ...

Page 2: ...all Block Diagram 3 2 Snapshots of Main Board 5 3 Charging Troubleshooting 9 4 LED Proximity IR Sensor uSIM SDCARD Troubleshooting 13 5 Sensors Troubleshooting 22 6 Touch Troubleshooting 29 7 Display Troubleshooting 34 8 Camera Troubleshooting 40 9 Audio and Vibrator Troubleshooting 50 10 NFC Troubleshooting 81 ...

Page 3: ...Moto X Pure Edition Moto X Style Baseband TROUBLESHOOTING GUIDES MOTOROLA CONFIDENTIAL OVERALL BLOCK DIAGRAM ...

Page 4: ...Moto X Pure Edition Moto X Style Baseband TROUBLESHOOTING GUIDES MOTOROLA CONFIDENTIAL ...

Page 5: ...Moto X Pure Edition Moto X Style Baseband TROUBLESHOOTING GUIDES MOTOROLA CONFIDENTIAL SNAPSHOTS OF MAIN BOARD ...

Page 6: ...Moto X Pure Edition Moto X Style Baseband TROUBLESHOOTING GUIDES MOTOROLA CONFIDENTIAL Top Side Battery side Bottom Side Display side Snapshots of Main PCB Top and Bottom ...

Page 7: ...Moto X Pure Edition Moto X Style Baseband TROUBLESHOOTING GUIDES MOTOROLA CONFIDENTIAL Main Board Top Placement ...

Page 8: ...Moto X Pure Edition Moto X Style Baseband TROUBLESHOOTING GUIDES MOTOROLA CONFIDENTIAL Main Board Bottom Placement ...

Page 9: ...Moto X Pure Edition Moto X Style Baseband TROUBLESHOOTING GUIDES MOTOROLA CONFIDENTIAL CHARGING TROUBLESHOOTING ...

Page 10: ...y IC is U2500 and the secondary IC is U540 used for turbo charging only Charge Path 1 of 2 primary charger IC USB Connector J500 pin1 Charger IC U2500 pin 193 194 195 208 209 209 210 L2509 Charger IC U2500 pin 174 189 204 205 Charger IC U2500 pin 173 188 202 203 R521 Battery Connector J510 Pin 4 CHARGING TROUBLESHOOTING Charger IC ...

Page 11: ...le Baseband TROUBLESHOOTING GUIDES MOTOROLA CONFIDENTIAL Charge Path 2 of 2 secondary charger IC Charger IC U540 pin 40 41 42 47 48 49 Charger IC U5201 pin 2 9 16 23 R521 Battery Connector J510 pin 4 CHARGING TROUBLESHOOTING cont d ...

Page 12: ... 4 35V or lower Check battery voltage at J510 pin 4 It should be 4 40V or lower If battery is below 2 1V there maybe a short in the circuit somewhere and the battery protection circuit is triggered Check battery ground path J510 pin 1 Battery temperature should be between 0ºC 45ºC to be fully charged Read the phone temperature using the following steps Attach a USB cable to a powered on phone In a...

Page 13: ...Moto X Pure Edition Moto X Style Baseband TROUBLESHOOTING GUIDES MOTOROLA CONFIDENTIAL LED PROXIMITY IR SENSOR USIM uSD CARD TROUBLESHOOTING ...

Page 14: ...Moto X Pure Edition Moto X Style Baseband TROUBLESHOOTING GUIDES MOTOROLA CONFIDENTIAL SOL LED White is driven by U2000 PM8994 SOL_LED_SINK PM8994_MPP8 and B_PLUS SOL Sign of Life LED B PM8994_MPP8 ...

Page 15: ...0 LED Vf If 10mA V_anode V_cathode 2 7V typ 3 1V max If LED is working Vf should be in the available range about 2 8V White SOL LED LED On LED Off FTM power w o battery V_Anode 3 15V 3 2V V_Cathode 0 3V Vf 2 8V V_Anode 3 15V 3 2V V_Cathode 0 95V Vf 2 2V FTM power w battery 3 8V V_Anode VBatt 0 1V 3 9V V_Cathode 1 05V Vf 2 85V V_Anode VBatt 0 1V 3 9V V_Cathode 1 66V Vf 1 95V ...

Page 16: ...ty Sensor Ambient Light Sensor IR Proximity Ambient Light Sensor circuit is located on a mainboard In the event of IR proximity or ambient light sensor issue at phone level Visually check under a microscope if the grommet is placed on the sensor correctly whether the grommet blocks the lens opening ...

Page 17: ...re 1 receiver sensor and 3 IR LEDs for operating IR sensor IR receiver sensor and 3 LED circuits are located on a mainboard In the event of IR sensor issue at phone level Visually check under a microscope if the grommet is placed on the sensor correctly whether any of the grommets block the lens openings ...

Page 18: ...Baseband TROUBLESHOOTING GUIDES MOTOROLA CONFIDENTIAL Depending on the PCB board variant there are up to 2 SIM connectors on PCB board Each SIM connector is operated independently with its own power detection and SIM bus interface SIM ...

Page 19: ...Moto X Pure Edition Moto X Style Baseband TROUBLESHOOTING GUIDES MOTOROLA CONFIDENTIAL SIM cont d Secondary SIM These components may be DNI depending on sku ...

Page 20: ... M4201 and M4202 for any sign of mechanical contact issues Inspect all SIM circuit components on PCB Check SIM power at C4203 for primary SIM and at C4223 for secondary SIM and SIM card detection signal TRAY_DET at E4210 TRAY_DET is high when tray is inserted Check SIM bus interface signal activities during SIM access UIMx_RST UIMx_CLK UIMx_DATA SIM cont d ...

Page 21: ...Moto X Pure Edition Moto X Style Baseband TROUBLESHOOTING GUIDES MOTOROLA CONFIDENTIAL uSD CARD Probe VDD_SDC at C4413 to check for 2 7 3 6V Probe TRAY_DET at E4210 for 1 8V ...

Page 22: ...Moto X Pure Edition Moto X Style Baseband TROUBLESHOOTING GUIDES MOTOROLA CONFIDENTIAL SENSORS TROUBLESHOOTING ...

Page 23: ...b failure Inspect physical placement U6000 and their related components on main PCB board see sensor hub schematic page on next slide When all sensors stop reporting readings please inspect the power supply on sensor hub If the power is present then please send the board back to Chicago for DE analysis Sensor hub ...

Page 24: ...Moto X Pure Edition Moto X Style Baseband TROUBLESHOOTING GUIDES MOTOROLA CONFIDENTIAL Sensor Hub ...

Page 25: ...chematic page on next slide Connect the board to a display and power the board display with battery or factory cable Launch CQA app test each accelerometer at a time Look for accelerometer G force activity on all axis X Y Z As you change the board orientation to have positive X Y Z accelerometer reading Good accelerometer IC will have G force reading for each positive axis closed to 9 8 else the I...

Page 26: ...PCB board see gyroscope schematic page on next slide Connect the board to a display and power the board display with battery or factory cable Launch CQA app test each gyroscope at a time Look for gyroscope activity on all axis X Y Z As you rotate the board orientation gyroscope reading will register reading accordingly When the board is stationary all gyroscope reading should be 0 Gyroscope ...

Page 27: ...Moto X Pure Edition Moto X Style Baseband TROUBLESHOOTING GUIDES MOTOROLA CONFIDENTIAL Accelerometer and Magnetometer ...

Page 28: ...ical placement U6140 and their related components on main PCB board Connect the board to a display and power the board display with battery or factory cable Launch CQA app test each magnetometer Look for magnetometer on all axis X Y Z As you rotate the board orientation magnetometer reading will register reading accordingly Magnetometer ...

Page 29: ...Moto X Pure Edition Moto X Style Baseband TROUBLESHOOTING GUIDES MOTOROLA CONFIDENTIAL TOUCH TROUBLESHOOTING ...

Page 30: ...Moto X Pure Edition Moto X Style Baseband TROUBLESHOOTING GUIDES MOTOROLA CONFIDENTIAL Two Layers Touch INX Synaptics S3528 16 TXs 28RXs Touch Design ...

Page 31: ...Moto X Pure Edition Moto X Style Baseband TROUBLESHOOTING GUIDES MOTOROLA CONFIDENTIAL 10 pin BtB conn to main b d Touch Design Mechanical ...

Page 32: ... TROUBLESHOOTING GUIDES MOTOROLA CONFIDENTIAL TOUCH_VCI 3 25V from L22A_3P0 TOUCH_VIO 1 8V INT_N 1 8V State change interrupt Low when touch event occurs Touch Design Electrical RST_N from MSM GPIO I2C lines SCL SDA should be pulled up to 1 8V ...

Page 33: ...IDES MOTOROLA CONFIDENTIAL No touch and abnormal touch 1 Check power supply voltages 2 Check a touch connector and flexes on display flex 3 Check a panel crack 4 Check firmware version adb shell cat sys bus i2c devices 2 0020 ic_ver Touch Design Troubleshooting ...

Page 34: ...Moto X Pure Edition Moto X Style Baseband TROUBLESHOOTING GUIDES MOTOROLA CONFIDENTIAL DISPLAY TROUBLESHOOTING ...

Page 35: ...oto X Pure Edition Moto X Style Baseband TROUBLESHOOTING GUIDES MOTOROLA CONFIDENTIAL Display Circuit Location Display Backlight Driver Panel Driver IC Display related Components Display 41 pin Connector ...

Page 36: ...ight signal check Colorful components placed Gray components NOT placed MIPI Signals Display Control Signals AoD signals Display B L Panel Drive DISP_VIO 1 8V DISP_RST_N 1 8V DISP_CABC DISP_TE MIPI_ERR_FG LED_C1 0 13V LED_C2 0 16V LED_Anode 22V VSN_DISP 5 5V VSP_DISP 5 6V VREG_L25A_1P2 VREG_L18A_2P85 ...

Page 37: ...Moto X Pure Edition Moto X Style Baseband TROUBLESHOOTING GUIDES MOTOROLA CONFIDENTIAL CABC Signal as seen on an oscilloscope ...

Page 38: ...Moto X Pure Edition Moto X Style Baseband TROUBLESHOOTING GUIDES MOTOROLA CONFIDENTIAL MIPI Signal as seen on an oscilloscope zoomed out ...

Page 39: ...Moto X Pure Edition Moto X Style Baseband TROUBLESHOOTING GUIDES MOTOROLA CONFIDENTIAL MIPI Signal as seen on an oscilloscope zoomed in ...

Page 40: ...Moto X Pure Edition Moto X Style Baseband TROUBLESHOOTING GUIDES MOTOROLA CONFIDENTIAL CAMERA TROUBLESHOOTING ...

Page 41: ...n the meantime check if receptacle and plug of B to B connector are mated properly without poor assembly If the issue follows rear Imager module Send the defective module to module supplier for further analysis If the issue follows main PCB Please check power supplies level control signals and MIPI signals as directions on the next slide to find further information about failure Rear Facing Imager...

Page 42: ... CAM_R_RST is high at No 5 pin of FL5500 It should be high level Check CAM_R_MCLK main clock 24Mhz at this point of E5502 Check sensor core power level at this point of C5514 CAM_R_DVDD 1 15V Check sensor digital power level at this point of C5510 CAM_R_VDDIO 1 8V Check sensor analog power level at this point of C5551 CAM_R_AVDD 2 5V Check AF actuator power level at this point of C5519 CAM_AF_2P8 ...

Page 43: ...on Moto X Style Baseband TROUBLESHOOTING GUIDES MOTOROLA CONFIDENTIAL Rear Facing Imager Troubleshooting cont d Zif fingers of rear imager module will be inserted into zif connector on main PCB as below top contact type ...

Page 44: ...n the meantime check if receptacle and plug of B to B connector are mated properly without poor assembly If the issue follows front Imager module Send the defective module to module supplier for further analysis If the issue follows main PCB Please check power supplies level control signals and MIPI signals as directions on the next slide to find further information about failure Front Facing Imag...

Page 45: ...is point of E5602 Check sensor core power level at this point of C5602 CAM_F_DVDD 1 2V Check sensor digital power level at this point of C5600 CAM_F_VDDIO 1 8V Check sensor analog power level at this point of C5605 CAM_F_AVDD 2 85V Check if I2C_SCL SDA activity is present at No 6 7 pins of FL5600 Check if CAM_F_RST is high at No 5 pin of FL5600 It should be high level ...

Page 46: ...ure Edition Moto X Style Baseband TROUBLESHOOTING GUIDES MOTOROLA CONFIDENTIAL Front Facing Imager Troubleshooting cont d Plug on front imager module will be mated with receptacle connector on main PCB as below ...

Page 47: ...ck if receptacle and plug of B to B connector are mated properly without poor assembly If the issue follows rear imager flash led flex Check if led was damaged and send the module to led supplier without removing LEDs on flexible PCB for further analysis if it is the case If the issue follows main PCB Please check the operation of flash driver IC SKY81296 on next slide to find further information ...

Page 48: ...mager Flash LED cont d Check if I2C_SCL SDA activity is present at No 6 7 pins of FL5600 or No 7 8 pins of FL5500 Since these signals are being shared with front and rear imagers Check the SMT status if there is cold soldering or part damage associated with flash driver IC circuitry on main PCB ...

Page 49: ...er flash PCB by swap test with known good PCB module first In the meantime check if universal contacts M5601 and M5602 are mated properly without poor assembly If the issue follows front imager flash PCB Check if led was damaged and send the module to led supplier without removing LEDs on flexible PCB for further analysis if it is the case Front Imager Flash LED ...

Page 50: ...Moto X Pure Edition Moto X Style Baseband TROUBLESHOOTING GUIDES MOTOROLA CONFIDENTIAL AUDIO VIBRATOR TROUBLESHOOTING ...

Page 51: ...Moto X Pure Edition Moto X Style Baseband TROUBLESHOOTING GUIDES MOTOROLA CONFIDENTIAL Audio Device ...

Page 52: ...Moto X Pure Edition Moto X Style Baseband TROUBLESHOOTING GUIDES MOTOROLA CONFIDENTIAL Audio Block Diagram ...

Page 53: ...microphone for stereo camcording 3rd MIC Beam forming microphone for AoV mode Recording microphone for stereo camcording 4th MIC Supporting microphone for AoV mode HS MIC Main microphone for headset mode voice call Main microphone for AoV mode While wired headset has been inserted Top speaker Output stereo sound Left channel Output Rx voice at handset mode voice call Bottom speaker Output stereo s...

Page 54: ...g loops headset MIC to the wire headset speakers If both of those are not function Top speaker path may be damaged In the Audio menu of the CQA apk select Ear Speaker and then Play Harvard speech pattern The loudspeakers can be tested by selecting Loudspeaker under the Audio menu Music should start playing The headset audio can by tested by first plugging in a headset with a microphone and then se...

Page 55: ...Moto X Pure Edition Moto X Style Baseband TROUBLESHOOTING GUIDES MOTOROLA CONFIDENTIAL Primary Microphone Circuit ...

Page 56: ...04 or C4503 This should be 1 7 1 8V when the microphone is enabled Check the 1st microphone sealing cushion at bottom PCB If the cushion has been shifted the MIC hole could be blocked See image below Check the microphone output at C4501 or C4502 The AC amplitude should increase Output DC bias should be around 0 7V when audio is present Primary Microphone ...

Page 57: ...Moto X Pure Edition Moto X Style Baseband TROUBLESHOOTING GUIDES MOTOROLA CONFIDENTIAL Secondary Microphone Circuit ...

Page 58: ...4513 This should be 1 7 1 8V when the microphone is enabled Check the 2nd microphone sealing cushion at rear housing If the cushion has been shifted the MIC hole could be blocked while it has been assembled Check the microphone output at C4511 or C4512 The AC amplitude should increase Output DC bias should be around 0 7V when audio is present Secondary Microphone ...

Page 59: ...Moto X Pure Edition Moto X Style Baseband TROUBLESHOOTING GUIDES MOTOROLA CONFIDENTIAL Tertiary Microphone Circuit ...

Page 60: ...e microphone is enabled Check the 3rd microphone sealing grommet and adhesive on the 3rd MIC part If the grommet and adhesive have been assembled abnormally the MIC hole could be blocked while it has been assembled See image below Check the microphone output at C4521 or C4522 The AC amplitude should increase Output DC bias should be around 0 7V when audio is present Tertiary Microphone Blocked hol...

Page 61: ...Moto X Pure Edition Moto X Style Baseband TROUBLESHOOTING GUIDES MOTOROLA CONFIDENTIAL Quaternary Microphone Circuit ...

Page 62: ...s should be 1 7 1 8V when the microphone is enabled Check the 4th microphone sealing grommet on the 4th MIC part If the grommet has been assemble abnormally the MIC hole could be blocked while it has been assembled Check the microphone output at C4531 or C4532 The AC amplitude should increase Output DC bias should be around 0 7V when audio is present Quaternary Microphone ...

Page 63: ...Moto X Pure Edition Moto X Style Baseband TROUBLESHOOTING GUIDES MOTOROLA CONFIDENTIAL Vibrator Circuit ...

Page 64: ...atic on the previous slide Check vibrator driver IC VDD at C4602 or C4603 The VDD voltage level should be 5V when the phone powered on This power should be always turned on Check vibrator part DC armature resistance on test points VIBP and VIBN see image below to verify the solder connection between vibrator and PCB and PCB traces The DC armature resistance should be about 11 19 ohms The voltage d...

Page 65: ...Moto X Pure Edition Moto X Style Baseband TROUBLESHOOTING GUIDES MOTOROLA CONFIDENTIAL Top Speaker Boost IC Circuit B_PLUS 8 V 16 V PWM B_PLUS 9 V ...

Page 66: ...Moto X Pure Edition Moto X Style Baseband TROUBLESHOOTING GUIDES MOTOROLA CONFIDENTIAL Top Speaker Boost IC Circuit B_PLUS B_PLUS 9 V 8 V 16 V PWM ...

Page 67: ...o X Style Baseband TROUBLESHOOTING GUIDES MOTOROLA CONFIDENTIAL Top Earpiece and Speaker Circuit 8 V 16 V PWM speaker 0 V earpiece B_PLUS 9 V 5 V DC 0 V speaker 6 V 12 V PWM earpiece 8 V 16 V PWM speaker 2 V 4 V PWM earpiece ...

Page 68: ...o X Style Baseband TROUBLESHOOTING GUIDES MOTOROLA CONFIDENTIAL Top Earpiece and Speaker Circuit 5 V DC B_PLUS 9 V 8 V 16 V PWM speaker 0 V earpiece 0 V speaker 6 V 12 V PWM earpiece 8 V 16 V PWM speaker 2 V 4 V PWM earpiece ...

Page 69: ...ker to the contacts on M4670 with short thick wires While playing audio at normal to high volume use an oscilloscope to verify that the voltage on the VBST_LEFT_AMP node the junction of C6423 and C6425 alternates between B_PLUS voltage and approximately 9 V depending on the audio content While playing media audio at normal to high volume probe the voltage across C6422 A 384 kHz PWM waveform should...

Page 70: ...2 x B_PLUS up to 18 V p p depending on the audio content Check the voltage on the VDD_SPK_BOOT node R4697 and verify that it alternates between B_PLUS voltage and approximately 9 V depending on the audio content Check the voltage on the VDD_SPK_5V_BOOT R4699 and verify that it is 5 V DC Check the differential voltage across R4692 it should be about 0 V Probe the voltage at the SPKR_MODE_GATE node ...

Page 71: ...Moto X Pure Edition Moto X Style Baseband TROUBLESHOOTING GUIDES MOTOROLA CONFIDENTIAL Bottom Speaker Boost IC Circuit B_PLUS B_PLUS 9 V 8 V 16 V PWM ...

Page 72: ...Moto X Pure Edition Moto X Style Baseband TROUBLESHOOTING GUIDES MOTOROLA CONFIDENTIAL Bottom Speaker Boost IC Circuit B_PLUS B_PLUS 9 V 8 V 16 V PWM ...

Page 73: ...Moto X Pure Edition Moto X Style Baseband TROUBLESHOOTING GUIDES MOTOROLA CONFIDENTIAL Bottom Speaker Circuit 8 V 16 V PWM ...

Page 74: ...Moto X Pure Edition Moto X Style Baseband TROUBLESHOOTING GUIDES MOTOROLA CONFIDENTIAL Bottom Speaker Circuit 8 V 16 V PWM ...

Page 75: ...ect an 8Ω speaker to contacts M4681 and M4682 with short thick wires While playing audio at normal to high volume use an oscilloscope to verify that the voltage on the VBST_AUD_AMP_R node the junction of C6473 and C6475 alternates between B_PLUS voltage and approximately 9 V depending on the audio content While playing media audio at normal to high volume use an oscilloscope measure the differenti...

Page 76: ...Moto X Pure Edition Moto X Style Baseband TROUBLESHOOTING GUIDES MOTOROLA CONFIDENTIAL Universal Headset Detect IC Circuit 1 8 V DC 2 9 V DC ...

Page 77: ...Moto X Pure Edition Moto X Style Baseband TROUBLESHOOTING GUIDES MOTOROLA CONFIDENTIAL Universal Headset Detect IC Circuit 2 9 V DC 1 8 V DC ...

Page 78: ...Moto X Pure Edition Moto X Style Baseband TROUBLESHOOTING GUIDES MOTOROLA CONFIDENTIAL Headset Circuit 2 9 V DC 2 1 V with headset mic 150 mV RMS max with headset ...

Page 79: ...Moto X Pure Edition Moto X Style Baseband TROUBLESHOOTING GUIDES MOTOROLA CONFIDENTIAL Universal Detect IC and Headset Circuits 2 9 V DC 2 1 V with headset mic 150 mV RMS max with headset ...

Page 80: ...ous slides Verify that the supply voltage VDD_FSA8500 C4813 C4819 is 2 9 V DC Verify that the supply voltage VIO_FSA8500 C4821 is 1 8 VDC Verify that the open circuit voltage on the headset socket SLEEVE contact is 2 9 V DC The SLEEVE contact voltage drops to about 2 1 V DC when a standard non OMTP headset with a microphone is plugged in While playing media with a headset plugged in use an oscillo...

Page 81: ...Moto X Pure Edition Moto X Style Baseband TROUBLESHOOTING GUIDES MOTOROLA CONFIDENTIAL NFC TROUBLESHOOTING ...

Page 82: ...Moto X Pure Edition Moto X Style Baseband TROUBLESHOOTING GUIDES MOTOROLA CONFIDENTIAL NFC Measured RF Power Radio Level SWP Line Status with NFC SIM Inserted NFC Tag Detected NFC Failure Modes ...

Page 83: ...to X Pure Edition Moto X Style Baseband TROUBLESHOOTING GUIDES MOTOROLA CONFIDENTIAL Troubleshooting NFC Measured RF Power and NFC Tag Detection 1 Verify that NFC antenna is connected and properly seated ...

Page 84: ...Pure Edition Moto X Style Baseband TROUBLESHOOTING GUIDES MOTOROLA CONFIDENTIAL Troubleshooting NFC Measured RF Power and NFC Tag Detection 1 Verify that NFC antenna is connected and properly seated continued ...

Page 85: ...TOROLA CONFIDENTIAL Troubleshooting NFC Measured RF Power and NFC Tag Detection 1 Verify that NFC antenna is connected and properly seated continued 2 Visually inspect NFC antenna match for any damaged or missing parts 3 Visually inspect NFC antenna contacts for damage ...

Page 86: ...Baseband TROUBLESHOOTING GUIDES MOTOROLA CONFIDENTIAL Troubleshooting NFC Measured RF Power and NFC Tag Detection 1 Probe the below parts in NFC circuit and check specified voltage level Battery Voltage 3 8 4 2V Digital IO Voltage1 8V ...

Page 87: ... Style Baseband TROUBLESHOOTING GUIDES MOTOROLA CONFIDENTIAL Troubleshooting SWP Line Status with SIM inserted 1 Probe the below parts in NFC circuit and check specified voltage level 1 8V Regulator for Primary SIM 1 8V or 3 2V ...

Page 88: ... TROUBLESHOOTING GUIDES MOTOROLA CONFIDENTIAL Troubleshooting SWP Line Status with SIM inserted 2 Check that a SIM card can be read from primary SIM slot If card cannot be read then this test will fail Refer to UIM section for troubleshooting ...

Reviews:

No comments

Brands by name

Popular brands

Load more brands