The following Hardware method of resolving Nokia Lumia 800 touchscreen problem is almost the same, but the problems are quite different from one another.
Let’s have a look at Nokia Lumia 800 touch and display problems one by one :
Nokia Lumia 800 Touch Problem
No response from Touch
Nokia Lumia 800 Display Problem
Manual Solution for Nokia Lumia 800 Touch and Display Problem
For Touch problem, restart your phone and check.
For low brightness issue go into settings and check.
Hardware Solution for Nokia Lumia 800 Touch and Display Problem
For blank display and touch screen problem, the very first thing that you need to do is to unplug and plug display strip and check.
If that doesn’t work then check any other working LCD screen in order to verify whether the problem is in LCD or hardware.
Nokia Lumia 800 Display and Touch Solution
Clean on board connector of display and touch strip.
Re-solder display on-board connector.
For Display problem gently heat display IC and check.
For Touch Screen Problem gently heat touch IC.
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