WiFi greyed out iPhone 4S

[balzakhaar123]

Hello,

I've got an iPhone 4S from a customer, who said he had a greyed out WiFi and had an attempt to fix it, wich resulted in the iPhone not booting at all, even when on wall socket.

After looking at the schematics I gound out it was the wifi chip wich had a short.

After I replaced the wifi chip the iPhone would boot normally.

But I noticed that R49_RF and C13_RF had come off, and when the iPhone was put on the charger, the U5 chip would become veeeeery hot and the battery meassured 4,05volts.

After letting the iPhone rest for a day it would boot normally without getting very hot, but it now has greyed out wifi.

So my question is : are the missing R49_RF and C13_RF the cause of the greyed out wifi? And can I fix them?

Kind Regards

[MrInformation]

Make sure you replace the capacitors which were lost with
the same value capacitors

Also if your wifi is greyed out reheat the wifi chip
at 300 degree celciues on heat flow 3 for about a minute.
and it should come back 99%

but make sure you replace the caps.

[MrInformation]

Replace everything thats missing with the same values.

[balzakhaar123]

Originally Posted by MrInformation

Make sure you replace the capacitors which were lost with
the same value capacitors

Also if your wifi is greyed out reheat the wifi chip
at 300 degree celciues on heat flow 3 for about a minute.
and it should come back 99%

but make sure you replace the caps.

I think my problem is that I'm missing the 2 resistors above the WiFi chip.

A reheat did not work and I can"t seem to solder them on, they just won't stick

[Mrpokokejoget]

reflow chip module wifi 200 deegree celcius tested by me

[balzakhaar123]

Originally Posted by Mrpokokejoget

reflow chip module wifi 200 deegree celcius tested by me

I know the reflow works 99% of all the time, because I do it in all of my greyed out repairs, but with this one it didn't help, and I think because of the missing resistors the WiFi isn't working.
I tried too solder other ones on but they just don't stick