Help ZTE AVID N9120 METRO PCS touch screen digitizer unresponsive

[zsw128]

my phone's touch screen all the sudden stop working. hold power and up button reboot it to factory settings still not work. clean it, open it and put back together, the same, nothing works. don't know if I buy a new digitizer will fix this. please help let me know if there are any ways that i can try to fix this anyone.
Thx.

 

[henrytamayo]

Take it to metro if you have warranty

 

[starxpilot]

If you just bought it, take it back to Metro, although chances are, if they look around it, they might see that you 'opened' it, thus voiding the warranty. *I tried this with my Huawei Ascend and the Metro operator refused to accept my excuse that I, being bored, used a pen to poke at the tamper-evident film*

It sounds like the screen itself went bad, you could try to see if you can purchase another used one, and salvage it for the part you require, or find the means to obtain a new one. Hardware can be tricky to diagnose, much less fix without the proper equipment and resources.

 

[zsw128]

yes, open already. found these code on the other forum: for testing, works on our phone also some codes.

Dial Mnemonic Operation
*983*0# Menu (20:Battery/OLED/Back Light/Vibrator/Ringer/LED/Key/OLED off/SD/BT address/Radio Info/Memory/TouchPaint Test/Audio Loop/FM/Camera/GPS Test/IMEI/IMSI)
*983*3640*01# IMSI
*983*25# Battery Info
*983*31# OLED Test
*983*26# Backlight Test
*983*850# Radio Test 0
*983*86# Vibrator & LED Test
*983*84# Ringer Test
*983*07*01# Headset Test
*983*07*02# Key Test
*983*3470# LCD Test
*983*81# SD Test
*983*890# -
*983*26*# Radio Test 1
*#06# IMEI
*983*27274# CRASH Reboot
*#08# Test Flag [Note: requires QcNvTest.apk in /system/app]
*#09***# BT Test
*983*1275# _ASK Dev Info
*983*7# Menu (4:Version/IMEI/IMSI/BT address)
*983*3640# DOH+ Phone Info (inc ping test, radio on/off)
*983*636# MEM Memory Test
*983*28# BT Emode BT Test
*983*477# GPS GPS Test
*983*21# Audio Loop Test
*983*70# Automatic Inspection
*#18# LED Test
*#19# TouchPaint Test
*983*36# FM FM Test
*983*57# Factory Reset
*983*473# Camera
*#23# Video Camera
*983*10# Delete (Touchscreeen) Calibration File
*#25# FM Test
*983*2726# SIM Contacts Op 1
*983*37# SIM Contacts Op 2
*983*6726# SIM Contacts Op 3
*983*154# "test" Menu (12:Self-starting/Software Version/Hardware Version/PSN/Test Flag/[Completed]/Board Serial/Bluetooth Address/SMS security/SMS Registration Status/Flash Type/PRL Version/Serial Configuration)
*983*07# Menu (9:OLED/Ringer/Vibrator/Key Test/Audio Loop/Headset Test/FM/Camera/SD)
*983*5182# Dev Info
*983*7469# SHOW Automatic Inspection
*#26***# Sensor Test
*983*7936# QXDM Save Qxdm in log system
*987*0# Menu (4roduce Information[->"test" Menu]/Automatic Inspection/Factory data reset/Battery information)
*#27***# Compass Test
*983*87274# USBSI USB Switch Test
*983*06# BT Test
*983*564738# LOGSET LOG Set (inc sys_rw)
*983*93# FCC Test [Note: requires fcctest.apk in /system/app]
*983*2377# CFQP Call Forwarding Query with PowerOn
*983*24474636# CHIPINFO Chiper Test (chip info) [Note: requires ChiperTest.apk in /system/app]
*983*29873283# AXUPDATE Touchscreen Updater
*983*73564# SDLOG SD Log

 

[starxpilot]

Hmm, unfortunately, I do not have the knowledge to decipher that log.

Since it's already open, you might want to consider getting another one, unless someone can provide assistance with diagnosing and repairing the issue, which I believe, might have to involve taking the phone apart once more. If it powers up correctly and runs the way it should, it might simply be the screen that has either failed, does not have a strong enough connection to the hardware, or a driver for it has been corrupted or lost.

I wish I knew what else to suggest.