Chosen Solution

Why is my iPhone 12 Pro not turning on after a battery replacement?

Hi There are a couple things it could be

  1. it could be that your battery or screen isn’t seated properly Or 2)you may have damaged the logic board or another component Also have you tried plugging in the charger as iv had this happen to me before and sometimes they need a charger to wake them up Also new battery’s sometimes need a good charge for them to work as you don’t know how long they have been sitting for:-) Hopefully this helps Any questions please ask Thanks:-)