# How to fix Connectivity Assist battery drain on iOS 27 and Android > Learn how to fix the Connectivity Assist battery drain on iOS 27 and Adaptive Connectivity issues on Android to restore your phone's screen-on time. - Canonical URL: https://coreiten.com/en/article/fix-connectivity-assist-battery-drain-on-ios-27-and-android - Language: en - Section: How To - Author: Sami - Published: 2026-10-10T03:39:14+03:00 - Modified: 2026-10-10T03:39:14+03:00 - Publisher: CoreITen (https://coreiten.com) - Keywords: Connectivity Assist, iOS 27, Android, iPhone 15 Pro Max, iPhone 16 Pro, Adaptive Connectivity, Google Pixel ## Summary Reddit users discovered that background network features on iOS 27 and Android devices are causing severe battery drain and overheating issues. - An iPhone 15 Pro Max user with 89% battery health saw Screen On Time drop to 3 to 4 hours on iOS 27 until disabling Connectivity Assist. - Apple users must turn off Connectivity Assist in two separate places to completely stop it from running in the background. - Android users, particularly on Google Pixel devices, face similar battery drain from an active process called Adaptive Connectivity. - Apple has officially confirmed its upcoming Welcome Home event scheduled for October 13. **Why it matters:** This highlights a widespread smartphone issue where hidden background network optimization tools unexpectedly degrade daily battery performance. --- Frustrated Reddit users have identified a lesser-known feature that could be causing rapid battery drain on smartphones. The issue affects users who have recently upgraded to iOS 27, while a similar background process is impacting Android devices. ### What Connectivity Assist does Hidden in the iOS Settings app under Wi-Fi, Connectivity Assist is designed to provide a more reliable internet experience automatically. It helps smooth out network connections when a Wi-Fi signal is weak, intermittent, or unavailable, such as in a garden, on a driveway, or in crowded public places like airports and coffee shops. However, Connectivity Assist can inadvertently keep cellular antennas constantly active in the background, even when the phone is firmly connected to a stable Wi-Fi network. One Reddit user reported a dramatic turnaround on an iPhone 15 Pro Max with 89% battery health, noting that their Screen On Time (SOT) plummeted to just 3 to 4 hours after installing iOS 27. After turning off Connectivity Assist, their battery life jumped back up to a healthy 7 hours. Another user with an iPhone 16 Pro reported similar overheating and battery drain until they tracked down the setting. ### How to turn off Connectivity Assist Users trying to determine if Connectivity Assist is draining their battery must be careful when switching the feature off. According to user reports, the setting must be turned off in two places to ensure it does not keep running in the background: globally in the main Wi-Fi settings, and separately for saved networks, such as home and work Wi-Fi. ### How to turn off Adaptive Connectivity on Android Android users, especially those with Google Pixel devices, have long suffered from rapid battery drain caused by Adaptive Connectivity, which functions similarly to Apple's feature. Writing for MakeUseOf, Sara Heritage notes that she experienced heavy battery drain on her Pixel 7, particularly at idle, and kept the feature turned off. Following a recent system update, her battery life worsened again. Even though Adaptive Connectivity was disabled in the main settings, it was continuously running in the background whenever the phone was on. To root out this rogue process on an Android device, follow these steps: 1. **Go** to Settings, select About Phone, then tap the Build Number seven times until you see a message saying you are a developer. 2. **Check** Running Services: Diagnostics. 3. **Go** to Settings > System > Developer Options > Running Services to see which background processes are using RAM and CPU. 4. **Check** the list of active processes for 'Adaptive Connectivity' and turn it off. ### Apple's upcoming hardware event These battery complaints arrive during a packed week for Apple enthusiasts. The timing coincides with Apple officially confirming its upcoming “Welcome Home” event on October 13, where the company will probably reveal some exciting new hardware and products. ## Sources - [makeuseof.com](https://www.makeuseof.com/a-hidden-setting-is-draining-your-phones-battery-heres-how-to-turn-it-off/) ## Related topics - [iOS 27](https://coreiten.com/en/topic/ios-27)