Have iPhone which is connected to WiFi network which doesn't have access to internet. iOS apparently detects that there is no internet and tries to disable WiFi for a short period of time and connect to 4G.

Noticed it because iPhone is connected to AirPlay device and music is stopped every ~15 minutes and when I check the connection I see 4G, but not WiFi.

  • So what's your question?
    – fsb
    Mar 14, 2020 at 18:22
  • Do you want your iPhone to use the 4G LTE and the no-internet WiFi network at the same time?
    – Nic
    Mar 14, 2020 at 18:37
  • That's interesting. I have often lamented what I thought was an Apple design error—if there's a WiFi connection, my iPhones have always refused to use cell data, even if the WiFi router has no internet.
    – WGroleau
    Mar 14, 2020 at 19:09

1 Answer 1


Put your iPhone into Airplane Mode to disable the cellular connection. Then re-enable Wi-Fi networking (you can do this even in Airplane mode). This will cause it to stick with the Wi-Fi network.

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