iPhone4S no Wifi, no BB after water damage. Clean board and check for shorts.
This board had PMIC hot and U1001 hot (near dock fpc). After U1001 removed and replaced, phone got WiFI and BB back to normal, phone working fine again.
Check this video to find out if WIFI IC needs to be reballed. IC has crack in glue, because phone got droped on floor by customer.
Use drop of gasoline and push IC to see if there are any cracks in glu under IC.
This metod can be used for all glued IC's on board.
BIG thanks to my friend WITES for this solution!!! iPhone 4 wifi crack in glue - YouTube
If loudspeaker doesnt work even after replacing dock flex, speaker,... check speaker preamp U5 if cracked or missing.
Reball or make jumpers like this:
Try this solution if you replace antenna and still same,yellow line must beep only capacitor will not beep try jump it to improve signal in some building i not tried yet if someone try and it work reply please.
Use DC Power Supply in Place of Battery for iPhone 4!
Disassemble an old dead battery and do as in photo in this way you can power on and check for short,heat battery consumption etc,not forget to isolate after solder wires.
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