Just picked up the iPhone Smart Battery case for the XS Max. It was working fine last night. I was using it w the case this morning and all of a sudden it shut down on me. Now the phone doesn’t boot/turn on. Its dead!! Wtf!! The smart battery case killed my iPhone!! gotta go to tmobile to get my phone replaced. I’m returning this defective POS CASE!!!
Phone also worked fine before you went to sleep. Sleep or night could have broken it. Someone else had a max stop working one night...this was long before the battery case came out. It would have been anything. Sorry your phone broke. My battery and case and phone are doing fine so far.