Chosen Solution
Hi, I recently did a DIY screen swap of my Samsung Galaxy S8, following the guide given here. The phone was working find before the swap and now I’m having the following issues; 1/ Front and rear camera not working 2/ Iris recognition not working 3/ Overheating (heat can be felt near the power button) I cleared the cache and data of the camera app, and restarted the phone a couple of times. I tried disassembling all the components and putting them back together. Even tried cleaning the components slightly with the use of some isopropyl alcohol. But nothing seems to work. Little bit desperate to find out what the cause could be. I wanted to ask if anyone could help me, before I take it to a service centre. Thank you. Savi Update (10/31/2018) The symptoms I’m seeing are; 1/ The front & rear camera are not working. 2/ In the diagnostics menu (#0#), everything works expect for the sensors section, and both camera. When I try to get these, the screen shows blank and freezes. 3/ LED notification indicators do not work, even when battery is low or when the phone is plugged in. 4/ When the phone is plugged into charge, it either stays on 0% or charges to 5%~6% and then starts to go back to 0%. During this time the phone (near the power button) starts to get really hot.
Are the replacement screen and the phone itself coming from the same phone model? For example SM-G950F to SM-G950F and not to SM-G9550 instead? Because if the models are different the screen frames that hold the logic board don’t always fit correctly as some areas of the boards such as the top left / top right are blocked due to different cutouts depending on the logic board model.
You might as well try to take it apart again and see if you damaged the ribbon cables inside the device or you forgot to plug them back in.(Forgot to add:Check if you correctly plugged the cables in)
Based on what you described, I would be concerned that you may have knocked a board component off when you disassembled the phone, namely one of the sensor related components, which can cause a myriad of problems with Samsung phones when they are not detected.
