iphone 4 usb not working - GSM-Forum

Apple User · 01-04-2014, 19:44

iphone 4 after plugged to car charger dead
i change pmic phone working and charge ok but usb cable not

jumper q2 check l4 and l3 replace l2_pmu check l1 replace u6 replace s1 replace q1 and q3 but phone not answer to usb cable just when turning on the phone on apple logo connect usb pc show usb not regonized

giakhang1001 · 01-06-2014, 19:55

Check your connection cable bro

Apple User · 01-07-2014, 22:15

connector ok
usb flex change
same

memas_trading · 01-08-2014, 08:41

remove the charging ic make it jumper

Apple User · 01-08-2014, 09:52

Quote:

Originally Posted by memas_trading

remove the charging ic make it jumper

i did it and said jumper q2

Apple User · 01-12-2014, 23:07

still waiting for your help

ProcyOne · 01-12-2014, 23:49

USB not recognized means one of D+ or D- is gone :/
Take of L1 and check do U have any impedance after this coil cos USBHS_N and USBHS_P goes directly to CPU

01-04-2014, 19:44	#1 (permalink)
Apple User Freak Poster Join Date: Jan 2012 Posts: 312 Member: 1711751 Status: Offline Thanks Meter: 17	iphone 4 usb not working iphone 4 after plugged to car charger dead i change pmic phone working and charge ok but usb cable not jumper q2 check l4 and l3 replace l2_pmu check l1 replace u6 replace s1 replace q1 and q3 but phone not answer to usb cable just when turning on the phone on apple logo connect usb pc show usb not regonized

01-06-2014, 19:55	#2 (permalink)
giakhang1001 Junior Member Join Date: Dec 2013 Posts: 9 Member: 2077507 Status: Offline Thanks Meter: 0	Check your connection cable bro

01-07-2014, 22:15	#3 (permalink)
Apple User Freak Poster Join Date: Jan 2012 Posts: 312 Member: 1711751 Status: Offline Thanks Meter: 17	connector ok usb flex change same

01-08-2014, 08:41	#4 (permalink)
memas_trading Freak Poster Join Date: Aug 2012 Location: deira dubai Posts: 249 Member: 1797460 Status: Offline Sonork: 100.1622335 Thanks Meter: 24	remove the charging ic make it jumper

01-12-2014, 23:07	#6 (permalink)
Apple User Freak Poster Join Date: Jan 2012 Posts: 312 Member: 1711751 Status: Offline Thanks Meter: 17	still waiting for your help

01-12-2014, 23:49	#7 (permalink)
ProcyOne No Life Poster Join Date: Jun 2007 Location: Swansea, UK Age: 41 Posts: 719 Member: 523318 Status: Offline Thanks Meter: 268	USB not recognized means one of D+ or D- is gone :/ Take of L1 and check do U have any impedance after this coil cos USBHS_N and USBHS_P goes directly to CPU