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Thursday, July 5, 2012

cell phone Screen stays off throughout the call

Last week I drop my Cell Phone (Dell Venue Pro) and broke front glass. I order front glass screen from ebay and fix cell phone at home (Thanks to youtube).

Everything worked fine but I was facing issue related to -Screen stays off while making calls and after receiving calls (the screen turns off n stay that way till call ends). this was very frustrating as cannot do any activity after i dial number or receive call.

Thought something is obscuring the Light sensor or promimity Sensor, because during a call the screen being off is a feature.

You can fix it though in the EM app. You can adjust the sensor readings and the phone will function like normal. (IF NOT  it might be hardware defect). But i would suggest its worth trying.

1) Get the EM app, if you dont have it dial ##634# into the dialer

2) Get into the advanced menu by double tapping the black area and typing in "qwertyuiop"

3) Select "RD test", now enter *#6336# in the box that pops up.

4) Select "Sensors", and the "Proximity Sensor Config"

5) Set the following to these:

LED strength - 1
Diode select - 2
Pulse Count - 43

6) Hit set and then you are good to go!

FYI might needs to have this put in again everytime we reboot the phone, most other cell phones saves it.

ALTERNATE FIX: Fixed it by doing a calibration on the same prox sensor settings screen, but with my hand over the sensor to calibrate it to darkness. Then the sensor output started reading something other than 1023 (around 320 when light and 840 when dark) and it started working fine. all in one reading should be other than 1023. for me Pulse Count - 1 worked.