Samsung S7 screen can't touch

[iblisious]

I use Samsung S7 SM-G930FD and the screen has been unresponsive since 2 weeks ago. I do hard restart and sometimes I tried removing the battery connector. Sometimes the screen responsive but sometimes still unresponsive. I tried replacing the battery (without the original battery) and still unresponsive but better than the original battery. The screen was not cracked and before the screen was not responsive my phone never fell before. If i turn mobile data and wifi off, screen responsive for 2 or 3 days. If screen unresponsive, i just lock the phone and leave it 2 - 5 minutes and the screen works normally. what should I do ? Do I have to replace it with an original battery? Or the screen was broken ?

 

[B. Diddy]

Welcome to Android Central! I moved this from the Displays forum to the S7 forum for more specific traffic.

I doubt the battery has anything to do with it. Does this also happen in Safe Mode? https://support.t-mobile.com/docs/DOC-28008. If so, then chances are that there's a problem with either the screen or its connection. You don't have to see any visible damage for a screen to fail or be defective. Bring the phone to a repair shop and see if they think the screen needs to be replaced, or if there might just be a loose connection somewhere.

 

[iblisious]

Welcome to Android Central! I moved this from the Displays forum to the S7 forum for more specific traffic.

I doubt the battery has anything to do with it. Does this also happen in Safe Mode? https://support.t-mobile.com/docs/DOC-28008. If so, then chances are that there's a problem with either the screen or its connection. You don't have to see any visible damage for a screen to fail or be defective. Bring the phone to a repair shop and see if they think the screen needs to be replaced, or if there might just be a loose connection somewhere.

I didn't try to boot to safe mode but before the screen is unresponsive, I always use this phone for a mobile hotspot in a few hours and while charging the battery.
What might be the cause of this unresponsive screen?

 

[B. Diddy]

If the phone is getting unusually warm, the heat might be triggering the malfunction -- is that happening? That's actually a situation where the battery could be indirectly responsible, so I take back what I previously said about doubting that the battery is the issue.

 

[iblisious]

If the phone is getting unusually warm, the heat might be triggering the malfunction -- is that happening? That's actually a situation where the battery could be indirectly responsible, so I take back what I previously said about doubting that the battery is the issue.

Since I change the battery with the new one (not original battery), the battery drain faster and hotter than before. But since 3 or 4 days ago and until now the screen can touch normally. So confused, should I buy a new original battery ?

 

[B. Diddy]

So are you saying that the new battery is actually worse?

 

[Rukbat]

If you changed the battery, you had the phone opened up. Open it up again, check ALL the wires where they come from the screen and where they enter the motherboard. Wither the digitizer (front glass) is bad, the motherboard is bad or a wire got cut or pinched. (That's why it's not a good idea to open a phone.)

 

[iblisious]

So are you saying that the new battery is actually worse?

The new (not original) battery I mean..

If you changed the battery, you had the phone opened up. Open it up again, check ALL the wires where they come from the screen and where they enter the motherboard. Wither the digitizer (front glass) is bad, the motherboard is bad or a wire got cut or pinched. (That's why it's not a good idea to open a phone.)

Btw, after I open a phone for the first time and try to remove the battery connector, the screen can touch. Still think this problem come from the power, battery or IC