Connectivity Assist in iOS 27 may be draining iPhone batteries
iOS 27 users report faster battery drain tied to Connectivity Assist, a feature that taps Wi-Fi and cellular data at the same time and sends DNS requests over cellular. One iPhone 15 Pro Max owner said disabling it restored battery life from 3–4 hours to 7 hours.
- Connectivity Assist uses Wi-Fi and cellular data simultaneously
- It routes DNS requests over cellular, bypassing ad blockers
- One iPhone 15 Pro Max user regained 7 hours of use after disabling it
- Apple recommends turning it off if you use an ad blocker
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