Chosen Solution
I recently replaced the screen assembly - LCD and Digitizer - on a Samsung S5 Neo. It has been working fine up until a week after the replacement, now it is unusable as soon as I turn it on it start randomly touching all over the screen, unlocking the phone and clicking on all the apps. I have checked the connector, which is fine, and done a few resets and restarts none of which help with the problem. Has anyone else had a similar issue, and been able to fix it? Or is the screen assembly or connector faulty? Thanks in advance Marty
it sounds like a defective digitizer to me, I would try a replacement screen, assuming the board connector is alright.