

PSA: Turn off connectivity assist in iOS 27 unless you absolutely need it
15 Pro Max
89% battery health
I was getting only 3-4 hours SOT after IOS 27 update
Turned off connectivity assist and I get 7 now
You have to turn it off in two places, WiFi settings and in each network you connect to
It was keeping my cellular antennas constantly active even on WiFi, destroying my battery life