Had a 13 Max Pro that never had bluetooth issues ever. I have an apple watch 8, Sony XM5, and airpod pro gen 2. They'd always instantly connect without issues as soon as they turned on/were taken out of their case. My apple watch never lost connection to my phone, always had live weather info, my sleep info never didn't record.
Got a free upgrade to the 14 Pro, then updated to ios 16 something and it started having bluetooth issues. Mostly ignored it because I had another free upgrade to the 15 Pro a few months away and figured the software issue would be fixed with updates. Nope.... It's only gotten worse.
Now I'm on the 15 Pro and currently on 17.2.1. All of my bluetooth devices almost never connect now. Not without rebooting my phone constantly, disconnecting and reconnecting them, or even having to fully reset things.
I've reset my network connections on my phone, forgotten all bluetooth devices and reset everything outside of fully backing up and flashing my phone.
Airpods will drop in drop out even when they do connect. I'll take one or both out of the case and they'll make the power up sound and even the connect sound, then just disconnect, or they won't even connect in the first place. I can be listening to them, answer a call, and they'll just disconnect.
I'll look at my apple watch and constantly see it not connected to my phone. It constantly doesn't record sleep info. The weather widget on my watch will constantly have no info and won't load. Even when it is actually connected to my phone they won't talk.
Sony MX5's no longer connect without rebooting my phone entirely.... Even with them showing connected in the bluetooth settings, they can't play anything and their app won't see them.
Oh and I can't use my Ford's bluetooth at all anymore, I have to use the apple car play with a physical connection.... And even that drops out sometimes...
This is nonsense and starting to get really frustrating!