Iphone 5 gsm network issue after rear camera replacement - Page 3 - GSM-Forum

sandy2626 · 08-10-2014, 06:47

I searched through the web and it seems that many people own iphone 5 who wanted to repair by themselves their ios are left with the gsm network issue with "no service" but what is this pesky problem? a trap from apple?

sandy2626 · 08-10-2014, 07:09

See here
http://forum.gsmhosting.com/vbb/f631...19/index3.html

khursheed.nokia · 09-07-2014, 17:02

i have same problem,, did any one found solution for it..???

sandy2626 · 09-09-2014, 14:28

Nothing for me. I have replaced the gsm flex cable and doesnt help. Don't know what to do.

braxton · 09-18-2014, 22:37

i changed the rear camera and now have this exact same problem - no service and can't load the network list. Board looks perfect under a microscope. Very strange problem...

sandy2626 · 09-21-2014, 17:26

Who can help us for this strange problem ?

qwertybasse · 09-21-2014, 22:18

There is a small space near battery connector that you can see under the shield the smd of rf unit. Maybe the screw driver hitinside

sandy2626 · 09-22-2014, 21:38

Quote:

Originally Posted by qwertybasse

There is a small space near battery connector that you can see under the shield the smd of rf unit. Maybe the screw driver hitinside

Hi
Can you send me a picture of this ?
Thanks

dog68 · 09-22-2014, 23:14

Make sure you have connected the antenna correctly, sometimes they don't click in.

braxton · 09-23-2014, 01:52

Quote:

Originally Posted by qwertybasse

There is a small space near battery connector that you can see under the shield the smd of rf unit. Maybe the screw driver hitinside

If you mean L910_RF under the shield by the battery -BINGO- that turned out to be my problem !!! The small component was missing, so I jumpered the contacts and my signal came back!! Thanks for this hint and thanks also to user "coderer" in the "lcd changed, now no service" thread that pointed me in this direction.

Hooray!!

qwertybasse · 09-23-2014, 19:47

I am trying to upload a picture but always says failed, maybe because I'm a junior member.

Yes I'm saying about the L910rf , C932, C940, L914... (only L910rf is important the others is only for better tuning)

sandy2626 · 09-30-2014, 17:45

Hi
I have found this diagram, it will be usefull for everybody.

Iphone5 PCB Layout Vietmobile.vn

Does somebody find something to help us ?

laptopmd · 10-26-2014, 00:08

Hi Sandy, i am very happy to announce that i have found what it was the problem of "no service" on my iphone 5.

The problem was the capacitor C701_RF missing after being water damaged !
Yes, this little cap act as a bypass filter for the signal RF_CLK > XO_REF and without this signal U701_RF does not work.

Now my network is back again and the phone is working good ! ;-)

bye!
Davide

sandy2626 · 12-07-2014, 21:38

Good laptopmd listen that you have solved your problem, i am not !
The component that is missing is the capacitor C367. I have tried to jump it but no success. Please can you help me to find a solution for this missed component?
Thanks

laptopmd · 12-08-2014, 11:01

NO NO NO !! Don't jump capacitors if you don't know what you are doing !!

C367 is on PP_VBATT line, you jumped the battery to ground !

C367 is only a leveling capacitor, you can leave it removed, no need to replace to make the phone working. But it does nothing for the gsm signal.

09-30-2014, 17:45	#42 (permalink)
sandy2626 Insane Poster Join Date: Jan 2006 Posts: 83 Member: 226788 Status: Offline Thanks Meter: 3	Diagram Hi I have found this diagram, it will be usefull for everybody. Iphone5 PCB Layout Vietmobile.vn Does somebody find something to help us ?

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08-10-2014, 06:47	#31 (permalink)
sandy2626 Insane Poster Join Date: Jan 2006 Posts: 83 Member: 226788 Status: Offline Thanks Meter: 3	I searched through the web and it seems that many people own iphone 5 who wanted to repair by themselves their ios are left with the gsm network issue with "no service" but what is this pesky problem? a trap from apple?

08-10-2014, 07:09	#32 (permalink)
sandy2626 Insane Poster Join Date: Jan 2006 Posts: 83 Member: 226788 Status: Offline Thanks Meter: 3	See here http://forum.gsmhosting.com/vbb/f631...19/index3.html

09-07-2014, 17:02	#33 (permalink)
khursheed.nokia Junior Member Join Date: Mar 2012 Posts: 1 Member: 1729071 Status: Offline Sonork: khurshed.nokia Thanks Meter: 0	i have same problem,, did any one found solution for it..???

09-09-2014, 14:28	#34 (permalink)
sandy2626 Insane Poster Join Date: Jan 2006 Posts: 83 Member: 226788 Status: Offline Thanks Meter: 3	Nothing for me. I have replaced the gsm flex cable and doesnt help. Don't know what to do.

09-18-2014, 22:37	#35 (permalink)
braxton Insane Poster Join Date: Jan 2009 Posts: 70 Member: 952935 Status: Offline Thanks Meter: 11	i changed the rear camera and now have this exact same problem - no service and can't load the network list. Board looks perfect under a microscope. Very strange problem...

09-21-2014, 17:26	#36 (permalink)
sandy2626 Insane Poster Join Date: Jan 2006 Posts: 83 Member: 226788 Status: Offline Thanks Meter: 3	Who can help us for this strange problem ?

09-21-2014, 22:18	#37 (permalink)
qwertybasse Freak Poster Join Date: Mar 2014 Posts: 195 Member: 2142442 Status: Offline Thanks Meter: 53	There is a small space near battery connector that you can see under the shield the smd of rf unit. Maybe the screw driver hitinside

09-22-2014, 23:14	#39 (permalink)
dog68 No Life Poster Join Date: Mar 2012 Location: cambridgeshire, England Age: 55 Posts: 760 Member: 1728699 Status: Offline Thanks Meter: 212	Make sure you have connected the antenna correctly, sometimes they don't click in.

09-23-2014, 19:47	#41 (permalink)
qwertybasse Freak Poster Join Date: Mar 2014 Posts: 195 Member: 2142442 Status: Offline Thanks Meter: 53	I am trying to upload a picture but always says failed, maybe because I'm a junior member. Yes I'm saying about the L910rf , C932, C940, L914... (only L910rf is important the others is only for better tuning)

10-26-2014, 00:08	#43 (permalink)
laptopmd Freak Poster Join Date: Jan 2013 Location: Switzerland Age: 48 Posts: 408 Member: 1873863 Status: Offline Thanks Meter: 67	Hi Sandy, i am very happy to announce that i have found what it was the problem of "no service" on my iphone 5. The problem was the capacitor C701_RF missing after being water damaged ! Yes, this little cap act as a bypass filter for the signal RF_CLK > XO_REF and without this signal U701_RF does not work. Now my network is back again and the phone is working good ! ;-) bye! Davide

12-07-2014, 21:38	#44 (permalink)
sandy2626 Insane Poster Join Date: Jan 2006 Posts: 83 Member: 226788 Status: Offline Thanks Meter: 3	Good laptopmd listen that you have solved your problem, i am not ! The component that is missing is the capacitor C367. I have tried to jump it but no success. Please can you help me to find a solution for this missed component? Thanks

12-08-2014, 11:01	#45 (permalink)
laptopmd Freak Poster Join Date: Jan 2013 Location: Switzerland Age: 48 Posts: 408 Member: 1873863 Status: Offline Thanks Meter: 67	NO NO NO !! Don't jump capacitors if you don't know what you are doing !! C367 is on PP_VBATT line, you jumped the battery to ground ! C367 is only a leveling capacitor, you can leave it removed, no need to replace to make the phone working. But it does nothing for the gsm signal.