[Galaxy S II Q&A, Help & Troubleshooting] avas911:
Touch screen not working

So i am having a very peculiar problem related to the GT-I9100 Touch Screen.

I bought the phone from Saudi Arabia and I live in Bangladesh at the moment. So for now I don't have warranty.

I bought it on 4th of this month. It had 2.3.3. So I updated it to 2.3.5. I did not use the phone much before that so I don't know if this problem was there before.

So here is the problem.

First time I noticed it when i pulled the phone from my pocket and could not unlock the pattern. First I thought I forgot the pattern. After sometime I noticed that i could not touch the buttons. I was dragging my finger over the points but there was no connecting line. I restarted the set. But it still did not work. After sometime I took the battery out. And after that it started normally and unlocked. And the touchscreen is totally fine.

I tested it using *#0*#. And every single point in the screen registers touch.

After that this happened couple of times. First couple of days I thought it was a pattern unlock problem. But i tried PIN and Password even using no unlock. It happened in every case.

So after couple of days it totally stopped happening.

But from yesterday it is happening again. And today it happened 3 times.

So today as I had no unlock protocol i tried tapping Home twice. As this brings on the voice command menu. And for the first time i was in the phone without touching the screen.And first i noticed the Menu and Back Soft keys works.And the touchscreen still does not work. And i noticed some thing weird. Always some thing in the screen is Selected. In Menu the + Icon is selected. In first screen the Map icon is selected. Also in Recent Apps the first App is selected. So after a lot of reboots it is back to normal again. Now i see something interesting. In the Battery Usage Graph i can see some really sharp drops. 3 times. Looks like when this happens phones charge takes a nose dive.

So here is the Gist.

Info related the Problem:

1. Usually happens when the phone is my pant pocket for sometime. It does not happen if it is sitting on the table.

2. Touchscreen gets totally disabled.

3. I have no idea why this happens.The exact reason behind it.

4. Battery Charge takes a nose dive when this happens. See the attached images.

5. I still don't know how to bring it back. Sometimes a simple reboot works. Sometimes I have to pull the battery. And sometimes it works on its own.

6. Every other function of the phone works. Like music playback using my UE 200vi music keys using PowerAMP, Siri(Android version), Call can be received using headset.

Battery nose Dive:

dl.dropbox.com/u/30943431/SC20111115-203017.png

dl.dropbox.com/u/30943431/SC20111116-202913.png

Also the selection

dl.dropbox.com/u/30943431/SC20111116-202146.png

So this is the thing. My biggest problem right now is, I don't know why it happens and I don't know how to bring it back from this situation. If I knew I could make sure I don't get it again or I would just fix it every-time. As when this happens I cant make calls or anything which requires the touchscreen.

So guys help me if you can by giving ideas. As i will not go back to KSA in 6 months. So buying a $550 phone unlocked was a total waste. As i cant use it here.

Thanks a million in advance.

---------- Post added at 09:29 PM ---------- Previous post was at 09:13 PM ----------

Sorry for this. But looks like i cant post outside links before i have 8 posts. So i removed the "ht tp : //" part of the links. Copy paste in browser address bar and it will open fine.

And also the next time it happens i will do a video to shou you guys.