iPhone 6 battery jumps and shuts down - GSM-Forum

7Axis · 12-20-2017, 05:36

I have this iPhone 6 purchased online, it's a phone that boots properly however there are some major issues with the power, it will shut down within 5 minutes even when connected to a power supply, the amperage stays at 750 mA when the phone is on (after the boot)... usual phones will normally play around 150mA 300mA but I never seen 750mA before, the battery also jumps percentage, if I connect a dead battery to the phone it will just boot instantly, doesn't actually wait to charge at 3% to boot, the it can go from 3% to 45% and shut down a minute after..

I noticed the iPhone had an iCloud hardware removal (it's had the CPU, NAND, baseband&&eprom replaced) and the guy seem to have done a pretty good job with it so I'm trying to figure what went wrong, my question is could those 4 componants that were reflowed possibly could cause an issue such as the one I explained earlier?

Also I did reflow U1700, U1401, Q1403 and NAND and nothing changed at all, can anybody help me I'm at lost for thoughts, thanks alot

genhack23 · 12-21-2017, 13:41

Quote:

Also I did reflow U1700, U1401, Q1403 and NAND and nothing changed at all,

The perfect ways to destroy a phone.. after some rework like cpu some coils need to be check try to see near cpu,,,

7Axis · 02-19-2018, 22:12

If you know what you are doing and maintain the reflow at low heat whilst also protecting all nearby chips from the heat this will cause no harm, and just fyi I finally solved this issue and it was a bad NAND, reprogrammed it and it works fine now.

pwinkle · 03-05-2018, 20:46

i have the same problem, how did you reprogram the NAND? and did you notice the board gets hot around the CPU?

thanks

pwinkle · 03-06-2018, 18:31

i have the same problem, how did you reprogram the NAND? and did you notice the board gets hot around the CPU?

thanks

12-20-2017, 05:36	#1 (permalink)
7Axis Freak Poster Join Date: Nov 2017 Location: Canada Posts: 131 Member: 2777379 Status: Offline Thanks Meter: 34	iPhone 6 battery jumps and shuts down I have this iPhone 6 purchased online, it's a phone that boots properly however there are some major issues with the power, it will shut down within 5 minutes even when connected to a power supply, the amperage stays at 750 mA when the phone is on (after the boot)... usual phones will normally play around 150mA 300mA but I never seen 750mA before, the battery also jumps percentage, if I connect a dead battery to the phone it will just boot instantly, doesn't actually wait to charge at 3% to boot, the it can go from 3% to 45% and shut down a minute after.. I noticed the iPhone had an iCloud hardware removal (it's had the CPU, NAND, baseband&&eprom replaced) and the guy seem to have done a pretty good job with it so I'm trying to figure what went wrong, my question is could those 4 componants that were reflowed possibly could cause an issue such as the one I explained earlier? Also I did reflow U1700, U1401, Q1403 and NAND and nothing changed at all, can anybody help me I'm at lost for thoughts, thanks alot

02-19-2018, 22:12	#3 (permalink)
7Axis Freak Poster Join Date: Nov 2017 Location: Canada Posts: 131 Member: 2777379 Status: Offline Thanks Meter: 34	If you know what you are doing and maintain the reflow at low heat whilst also protecting all nearby chips from the heat this will cause no harm, and just fyi I finally solved this issue and it was a bad NAND, reprogrammed it and it works fine now.

03-05-2018, 20:46	#4 (permalink)
pwinkle Junior Member Join Date: Mar 2018 Posts: 3 Member: 2817679 Status: Offline Sonork: 100.1680273 Thanks Meter: 0	i have the same problem, how did you reprogram the NAND? and did you notice the board gets hot around the CPU? thanks

03-06-2018, 18:31	#5 (permalink)
pwinkle Junior Member Join Date: Mar 2018 Posts: 3 Member: 2817679 Status: Offline Sonork: 100.1680273 Thanks Meter: 0	i have the same problem, how did you reprogram the NAND? and did you notice the board gets hot around the CPU? thanks