iPhone 6 shuts down after a few seconds - GSM-Forum

some124 · 10-20-2016, 11:51

iPhone 6

Turning itself off after a few seconds.
Dock, rear and front camera are disconnected.

Power supply at 3.7V showing 0.18A.
Just before turning off its jump to 0.24A and short warning LED is turned on. Then jump to 0.42A and iPhone is turned off and 0.0A

Any idea? Thanks

short_toground · 10-20-2016, 14:05

Have you tried working battery? Sometimes power supply hook up does that if phone can't determine battery percentage

some124 · 10-20-2016, 17:09

Yes, tried with two working batteries and same story.

jimchu316 · 10-21-2016, 01:17

Power supply at 3.7V showing 0.18A.
Just before turning off its jump to 0.24A

40ma --- cpu + power
80ma --- cpu memory working
120ma --- GPU working and LCD + power
220ma --- cpu working, show logo
180-350ma --- booting
700ma -- baseband working
1000ma -- 3G/4G working

----
NAND issues....

jimchu316 · 10-21-2016, 01:27

power on, then
40ma --- cpu power working
80ma --- cpu memory working
120ma --- GPU working and LCD power working
220ma --- cpu working, show logo
180-350ma --- booting, nand working
500ma -- other IC working
200ma -- ?
700ma -- baseband working
1000ma -- 3G/4G/wifi working

damian_zet · 07-14-2018, 14:22

What about phone booting to passcode screen, then after half minute turns off? CPU gets hot

10-20-2016, 11:51	#1 (permalink)
some124 Junior Member Join Date: Aug 2016 Posts: 4 Member: 2619084 Status: Offline Thanks Meter: 1	iPhone 6 shuts down after a few seconds iPhone 6 Turning itself off after a few seconds. Dock, rear and front camera are disconnected. Power supply at 3.7V showing 0.18A. Just before turning off its jump to 0.24A and short warning LED is turned on. Then jump to 0.42A and iPhone is turned off and 0.0A Any idea? Thanks

10-21-2016, 01:17	#4 (permalink)
jimchu316 Freak Poster Join Date: Sep 2014 Location: CN & NZ Posts: 388 Member: 2252373 Status: Offline Thanks Meter: 400	Power supply at 3.7V showing 0.18A. Just before turning off its jump to 0.24A 40ma --- cpu + power 80ma --- cpu memory working 120ma --- GPU working and LCD + power 220ma --- cpu working, show logo 180-350ma --- booting 700ma -- baseband working 1000ma -- 3G/4G working ---- NAND issues.... Last edited by jimchu316; 10-21-2016 at 01:24.

10-20-2016, 14:05	#2 (permalink)
short_toground No Life Poster Join Date: Jul 2016 Posts: 536 Member: 2598526 Status: Offline Thanks Meter: 52	Have you tried working battery? Sometimes power supply hook up does that if phone can't determine battery percentage

10-20-2016, 17:09	#3 (permalink)
some124 Junior Member Join Date: Aug 2016 Posts: 4 Member: 2619084 Status: Offline Thanks Meter: 1	Yes, tried with two working batteries and same story.

10-21-2016, 01:27	#5 (permalink)
jimchu316 Freak Poster Join Date: Sep 2014 Location: CN & NZ Posts: 388 Member: 2252373 Status: Offline Thanks Meter: 400	power on, then 40ma --- cpu power working 80ma --- cpu memory working 120ma --- GPU working and LCD power working 220ma --- cpu working, show logo 180-350ma --- booting, nand working 500ma -- other IC working 200ma -- ? 700ma -- baseband working 1000ma -- 3G/4G/wifi working

07-14-2018, 14:22	#6 (permalink)
damian_zet Junior Member Join Date: Jul 2013 Posts: 3 Member: 1972075 Status: Offline Thanks Meter: 1	What about phone booting to passcode screen, then after half minute turns off? CPU gets hot