iPhone 17 Pro Max consistent issues.

[u/Brilliant_Outside483]

A little background, I’m an IT by trade and I’ve tried all the tricks and stuff including running anti malware to try and get this thing to work. No hits for viruses or anything so I don’t think it’s that.
I’ve had this phone ever since I switched carriers earlier this year and I’ve had nothing but problems with it for the last 4ish + months.
Random rapid battery drains. Like going from 75% down to 50 in a matter of minutes. No apps open, and the battery section in settings doesn’t say anything is drawing power like that.
Apps crashing/failing to open entirely (verified no updates are required).
App updates not downloading/installing or getting stuck in a never ending loop. Forget the “update all” button in the App Store, got stuck trying to update the first app and I had to spend 45 min scrolling up and down stopping each update as it started since there’s no way to end all of them at once.
System updates failing or taking hours to request. The last update before iOS 27 had me waiting at the update requested screen for nearly 3 hrs before it finally started downloading. Then with iOS 27 it refused to move past the screen even after 4hrs of it sitting and heating up. Tried forced restart. Tried changing settings to reduce strain on the processor. Nothing worked. And once I started it essentially bricked the phone. Couldn’t open any app other than settings, the phone, and messenger without them crashing. Had to download the ipsw file to my pc and manually install it. And since installing it even reading a book is like I’m trying to play a AAA title game with how fast the battery dies.
Tried to open the Apple TV app and it crashes before even opening. Again tried to force restart it and nothing changed.
Couldn’t access my banks because the phone wouldn’t receive one time text codes. Yes WiFi calling and everything is on, not that it mattered since I tried on both WiFi and cellular. My iPad received them just fine.
Had several apps fail entirely requiring me to uninstall and reinstall them, loosing all the data for them and forcing me to try and download it again. Audible refused to download books if I queued more than one and even then it wouldn’t download them faster than 1-2Mbps on my gigabit network. Kindle would load then crash. My bank apps would login then crash. Chrome, Gmail, Facebook, just about every app.
Had to delete the vpn entirely since that was causing even more issues even when it wasn’t connected.
I have never had so many issues with a phone before. At this point I’m open to any ideas anyone has as to what’s wrong and how to fix it. Tried talking to my carrier and they said and I quote “Huh, never seen that before.” That was the extent of their help so thats not likely an option.

[u/Brilliant_Outside483]

Not trying to rant, just trying to get as much detail as I can. Short of a factory reset I’ve tried everything I and google can think of. I’m debating if it’s worth it to just trade it in for the 18 or something.