Chosen Solution
Hello i dropped my phone, and now when im trying to turn it on, it flashes the apple logo once real quick and then shuts down. does anyone know a fix to this ? ive tried whit new screen, battery, front flex cable, chargeing flex cable.
With everything you have tried (assuming the replacement parts are good), the only real option left is the logic board. It’s pretty common for a drop to cause logic board issues. This will have to be looked at by a micro-solderer.