My iPhone 6s gsm phone loses connection to the internet after a few minutes of idle time. The cell signal is strong. If I turn on airplane mode, then back off, it connects to internet.
It has had no problem while using WiFi. Thanks.
iPhone 6s, iOS 12
Cellular data is a carrier responsibility. You say that it disconnects after a period of being idle. Seems the reset on the phone is forcing it to reconnect. I would have the carrier check to see if there is something going on that is causing the disconnect. Otherwise, you may wish to go to Settings>General>Reset>Reset Network Settings. Then power the phone off and back on and then test the connection.
The culprit turned out to be the local AT&T tower. Cellular telephone service from this tower eventually failed as well.
Yes, those things can happen. Good to hear you got it sorted out.
iPhone 6s loses connection to internet, yet has strong cell signal
