Chosen Solution

Hello, i have an iphone 7 that wont turn on, had it a couple weeks ago and charging aperage was at 0.44, changed tristar and it worked fine. Now phone came back and wont turn on again, has a short on pp_gpu_var and pp09v_soc_fixed. Aperage is at 0.51. Any ideas?

Sounds like they have used the same charger again and damaged tristar. Idd change it again and see what result you get.