iPhone 5 dead touch - GSM-Forum

LeGrim · 04-23-2015, 09:28

the customer bring this iphone 5 to me asking for a screen replacement because the touchscreen wasn't working anymore, after the replace the touchscreen worked perfectly for like 2-3days, then the customer bring it back to me because the touchscreen is dead again, now i've tried to replace with another display but still no touch response, i'm thinking this issue is not relative to the display but some problem with the motherboard, do you have any suggestion?

p.s the phone is in very good conditions and the customer said it have never been dropped to ground or any similar damage

LeGrim · 05-02-2015, 09:35

is there anyone who knows how to check the problem ? i think its relative to touch ic, but dont even know where it is

kaptanci · 05-03-2015, 07:37

Dont beleive the stupit customers. They say always not dropped etc. Check the touch connector for crack etc try another battery. Check for missing components around touch connector. Iphone 5 has 2 touch ics u12 and u14. Search in internet u find the location. It may also be related to pmu. I cannot upload fotos yet to show how to check the voltage. Check shematics.

LeGrim · 05-12-2015, 09:20

Tyvm for the answer lord, checking the case i see no signs of hurt or drop, also when he took the phone to me the screen was not broken, just the touch not working, anyway at the moment im not very good at reading schematics, i've found after leaving the phone off for a some days and turning it on again the touch work perfectly for like 1day, then stop working again.

milkyctg · 05-12-2015, 10:00

I think this will help U

LeGrim · 05-12-2015, 10:58

Thank you Lord so much appreciated. So the next step is to check for any crack around these two ICs, and if so proceed with replacement, it is worth to try a reflow ?

Mashacellular · 05-12-2015, 11:01

CDMA_RASHID · 05-13-2015, 20:56

Why dont you try to read the threads title first ?

The guy is asking for Iphone 5 not Iphone 5s .

04-23-2015, 09:28	#1 (permalink)
LeGrim Freak Poster Join Date: Aug 2013 Location: Italy, Sardinia Age: 32 Posts: 211 Member: 2014547 Status: Offline Sonork: 100.1665176 Thanks Meter: 18	iPhone 5 dead touch the customer bring this iphone 5 to me asking for a screen replacement because the touchscreen wasn't working anymore, after the replace the touchscreen worked perfectly for like 2-3days, then the customer bring it back to me because the touchscreen is dead again, now i've tried to replace with another display but still no touch response, i'm thinking this issue is not relative to the display but some problem with the motherboard, do you have any suggestion? p.s the phone is in very good conditions and the customer said it have never been dropped to ground or any similar damage

05-02-2015, 09:35	#2 (permalink)
LeGrim Freak Poster Join Date: Aug 2013 Location: Italy, Sardinia Age: 32 Posts: 211 Member: 2014547 Status: Offline Sonork: 100.1665176 Thanks Meter: 18	is there anyone who knows how to check the problem ? i think its relative to touch ic, but dont even know where it is

05-03-2015, 07:37	#3 (permalink)
kaptanci Freak Poster Join Date: Nov 2014 Location: Germany Posts: 265 Member: 2289832 Status: Offline Thanks Meter: 48	Dont beleive the stupit customers. They say always not dropped etc. Check the touch connector for crack etc try another battery. Check for missing components around touch connector. Iphone 5 has 2 touch ics u12 and u14. Search in internet u find the location. It may also be related to pmu. I cannot upload fotos yet to show how to check the voltage. Check shematics.

05-12-2015, 09:20	#4 (permalink)
LeGrim Freak Poster Join Date: Aug 2013 Location: Italy, Sardinia Age: 32 Posts: 211 Member: 2014547 Status: Offline Sonork: 100.1665176 Thanks Meter: 18	Tyvm for the answer lord, checking the case i see no signs of hurt or drop, also when he took the phone to me the screen was not broken, just the touch not working, anyway at the moment im not very good at reading schematics, i've found after leaving the phone off for a some days and turning it on again the touch work perfectly for like 1day, then stop working again.

05-12-2015, 10:58	#6 (permalink)
LeGrim Freak Poster Join Date: Aug 2013 Location: Italy, Sardinia Age: 32 Posts: 211 Member: 2014547 Status: Offline Sonork: 100.1665176 Thanks Meter: 18	Thank you Lord so much appreciated. So the next step is to check for any crack around these two ICs, and if so proceed with replacement, it is worth to try a reflow ?

05-12-2015, 11:01	#7 (permalink)
Mashacellular Freak Poster Join Date: Jul 2008 Location: Sri Lanka Posts: 439 Member: 815299 Status: Offline Sonork: 100.1623047 Thanks Meter: 133

05-13-2015, 20:56	#8 (permalink)
CDMA_RASHID No Life Poster Join Date: Jul 2008 Location: Mumbai Age: 36 Posts: 1,023 Member: 821646 Status: Offline Thanks Meter: 507	Why dont you try to read the threads title first ? The guy is asking for Iphone 5 not Iphone 5s .