Iphone 4 no sound in calling HELP - GSM-Forum

Mattia_sp · 07-14-2014, 15:53

My iphone 4 fell into the water. I immediately disassembled, cleaned carefully, and it now power on.
The damage of water is very little, and is especially near the battery connector. Now the phone turns on, everything works, engages the network, the signal is good, but I have these only problems:

- reproducing music or sound of Ios I can hear sound, but during a call does not work microphone and headset (is mute and people can't hear me). Also I do not hear anything even if active speaker.

- the proximity sensor not work

I searched in the forum but the symptoms were different (I don't think that is audio ic problem).
All the rest of the phone works perfectly.
Please friends help me if anyone knows tell me what I can do to resolve. Thank you

Mattia_sp · 07-14-2014, 17:09

I also noticed that inserting the original headphones, the phone does not detect them. What could be the problem?

Inviato dal mio iPhone utilizzando Tapatalk

iCall · 07-14-2014, 18:55

Reball U62 can solve your both problems, be careful with resistors around it otherwise not to power on, and A4 of course

Mattia_sp · 07-14-2014, 20:47

Thanks, I'll try in the hope to solve all problem and I'll say you if solve..

Mattia_sp · 07-15-2014, 00:00

Sorry, but before I start, because the work is delicate.. Are you sure that the problem is U62? And the problem of proximity sensor is related with it?? Or so I solve only all audio problem?

iCall · 07-15-2014, 11:37

U62 can cause some issues as other end can not hear you, auto turn on the loud speaker when making call, proximity sensor not working... Make sure proximity sensor flex is good working friend!

Mattia_sp · 07-15-2014, 14:51

Yes proximity sensor is good, and I replace it but same situation.. I order a new U62 and try to replace it..

ros201023 · 07-15-2014, 15:17

first do replace U62 ic .. try a new frame full head ... then the motherboard on a microscope to see traces of oxidation not visulizzate eye ...

iCall · 07-16-2014, 06:17

U62 not so easy to die, how much heat you applied? very easy job. Anyway try to replace then post result friend. I reballed U62 even 10 times still works fine

Mattia_sp · 07-16-2014, 19:57

While I attend the new IC, I try to reball my U62, but without success.. After an accurate inspection the motherboard of iphone 4 is ok and very clean, the only strange thing is the color of capacitor that I've marked in picture.. This is the area that was in particular damaged by water.. Is it normal its color?? (On i_m_g_u_r)

http://*****.com/3IYAIp1

Mattia_sp · 07-18-2014, 16:24

Incredible friends! I tell you my solution for all this problem that could help anyone.. Even if all problems seems not linked, I solve all only changing the home flex connector! The old seems like a new.. Nothing sign of oxide etc.. But replacing it phone return to work perfect! Also the proximity sensor.. Thanks at all forum's friends for help!

07-14-2014, 15:53	#1 (permalink)
Mattia_sp Freak Poster Join Date: Oct 2013 Location: Italia Posts: 223 Member: 2044491 Status: Offline Thanks Meter: 18	Iphone 4 no sound in calling HELP My iphone 4 fell into the water. I immediately disassembled, cleaned carefully, and it now power on. The damage of water is very little, and is especially near the battery connector. Now the phone turns on, everything works, engages the network, the signal is good, but I have these only problems: - reproducing music or sound of Ios I can hear sound, but during a call does not work microphone and headset (is mute and people can't hear me). Also I do not hear anything even if active speaker. - the proximity sensor not work I searched in the forum but the symptoms were different (I don't think that is audio ic problem). All the rest of the phone works perfectly. Please friends help me if anyone knows tell me what I can do to resolve. Thank you

07-16-2014, 06:17	#9 (permalink)
iCall Freak Poster Join Date: Dec 2010 Posts: 209 Member: 1477098 Status: Offline Thanks Meter: 16	U62 not so easy to die, how much heat you applied? very easy job. Anyway try to replace then post result friend. I reballed U62 even 10 times still works fine Last edited by iCall; 07-16-2014 at 06:24.

07-14-2014, 17:09	#2 (permalink)
Mattia_sp Freak Poster Join Date: Oct 2013 Location: Italia Posts: 223 Member: 2044491 Status: Offline Thanks Meter: 18	I also noticed that inserting the original headphones, the phone does not detect them. What could be the problem? Inviato dal mio iPhone utilizzando Tapatalk

07-14-2014, 18:55	#3 (permalink)
iCall Freak Poster Join Date: Dec 2010 Posts: 209 Member: 1477098 Status: Offline Thanks Meter: 16	Reball U62 can solve your both problems, be careful with resistors around it otherwise not to power on, and A4 of course

07-14-2014, 20:47	#4 (permalink)
Mattia_sp Freak Poster Join Date: Oct 2013 Location: Italia Posts: 223 Member: 2044491 Status: Offline Thanks Meter: 18	Thanks, I'll try in the hope to solve all problem and I'll say you if solve..

07-15-2014, 00:00	#5 (permalink)
Mattia_sp Freak Poster Join Date: Oct 2013 Location: Italia Posts: 223 Member: 2044491 Status: Offline Thanks Meter: 18	Sorry, but before I start, because the work is delicate.. Are you sure that the problem is U62? And the problem of proximity sensor is related with it?? Or so I solve only all audio problem?

07-15-2014, 11:37	#6 (permalink)
iCall Freak Poster Join Date: Dec 2010 Posts: 209 Member: 1477098 Status: Offline Thanks Meter: 16	U62 can cause some issues as other end can not hear you, auto turn on the loud speaker when making call, proximity sensor not working... Make sure proximity sensor flex is good working friend!

07-15-2014, 14:51	#7 (permalink)
Mattia_sp Freak Poster Join Date: Oct 2013 Location: Italia Posts: 223 Member: 2044491 Status: Offline Thanks Meter: 18	Yes proximity sensor is good, and I replace it but same situation.. I order a new U62 and try to replace it..

07-15-2014, 15:17	#8 (permalink)
ros201023 Insane Poster Join Date: May 2012 Posts: 61 Member: 1760066 Status: Offline Thanks Meter: 2	first do replace U62 ic .. try a new frame full head ... then the motherboard on a microscope to see traces of oxidation not visulizzate eye ...

07-16-2014, 19:57	#10 (permalink)
Mattia_sp Freak Poster Join Date: Oct 2013 Location: Italia Posts: 223 Member: 2044491 Status: Offline Thanks Meter: 18	While I attend the new IC, I try to reball my U62, but without success.. After an accurate inspection the motherboard of iphone 4 is ok and very clean, the only strange thing is the color of capacitor that I've marked in picture.. This is the area that was in particular damaged by water.. Is it normal its color?? (On i_m_g_u_r) http://*****.com/3IYAIp1

07-18-2014, 16:24	#11 (permalink)
Mattia_sp Freak Poster Join Date: Oct 2013 Location: Italia Posts: 223 Member: 2044491 Status: Offline Thanks Meter: 18	Incredible friends! I tell you my solution for all this problem that could help anyone.. Even if all problems seems not linked, I solve all only changing the home flex connector! The old seems like a new.. Nothing sign of oxide etc.. But replacing it phone return to work perfect! Also the proximity sensor.. Thanks at all forum's friends for help!