andrei

The common problem with 6S wifi module. After someone drop the phone WiFi became gray. You can resolder the WF chip and if this is do not help you can not replace WF module from another phone. even when you install brand new 100% working WF module to the board that was having gray WF problem you never make it work. The reason , because WF module and NAND come toghether, to make WF work you need to remove NAND and reprogramm. For now its impossible soon there is no software to do it with iphone 6S NAND yet

Its your front camera flex cable (there is proxy on it) and this proxy didnt recognize light propertly

Its can be dock connector flex cable. You saw what side its jump to the water. The other reason may be you didnt clean logic board good. Anyway dont keep phone on charger if it became hot. Try disconnect dock connector and try power up the phone just with battery connected.

To remove icloud from motheboard needs to be resolder 3 chips from any other motheboard that do not have icloud. (all info icloud,imei and other split by apple in 3 chips) this is why have to be change all 3 chips. For people who have expirience with soldering its possible for other not. Update: Yep Dan (it can be done for sure) Do the same thing on iphone 4s, we will see how everything goes with 5s. Update (10/22/2015): www.planetrepair.com.ua I posted rarely but i do.