Iphone 6s chargin issue and battery value
 

I get a iphone6s to repair...
The phone have a strange problem, always show battery at 1%, charge very slowly when display is power on (0.40mha) but no charge when display is in sleep..
I changed tristars, battery, flex connector, and trigris... but nothing to do... problem still 🤦🏼*♂️

Changed 2 time tristars and two time tigris... nothing nothing nothing change 🤦🏼*♂️🤦🏼*♂️🤦🏼*♂️

have check resistors around u2 trister?

Check all area around battery connector, seen same issue before. there is mosfet and some passives (resistors, caps), check those, often people pry up battery ribbon and mutilate components surrounding vcc_bat connector

check for liquid damage too , have a similar problem with a water damaged 6s and suspect pw management cpu