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WiFi frequently disconnects

iPhone 15 pro max frequently disconnects from WiFi, especially when screen locks. I have followed all steps several times suggested on line and in older community posts ... but it still happens. Please advise.

iPhone 15 Pro Max, iOS 17

Posted on Sep 8, 2024 8:14 AM

1 reply

Sep 8, 2024 8:42 AM in response to onalee1

“Especially when screen locks” is by design. All iPhones from the beginning of iPhone time 17 years ago disconnect from Wi-Fi 30 seconds after the phone screen locks, to preserve battery energy, unless the phone is connected to power. This is done because a Wi-Fi connection uses power continuously, whether data are transferring or not. Cellular connections use more energy, but only when actually sending data. There are a few exceptions:

  • If you are streaming audio or video Wi-Fi will stay on
  • If you receive a notification Wi-Fi will reconnect for a few seconds to process the notification
  • And, I think (but I’m not sure) if an app uses Background App Refresh it can wake and use Wi-Fi; however very few apps actually use Background App Refresh.


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WiFi frequently disconnects

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