Some iOS 27 users blame Connectivity Assist for battery drain and increased mobile data use. Here is what Apple confirms and how to check usage.
Connectivity Assist
Connectivity Assist replaced Wi-Fi Assist in iOS 27 and moved to Wi-Fi settings
If your iPhone started leaning on cellular data after the iOS 27 update, the switch you remember turning off has a new name and a new address. Wi-Fi Assist is gone as a setting, replaced by Connectivity Assist, and the toggle now sits in Settings > Wi-Fi instead of at the bottom of Settings >…