Friday, January 11, 2019

Samsung Galaxy S9 / S9+ suddenly stops making phone calls after firmware update

Situation:  You've had a Galaxy S9 or S9+ for a long time with no issues.  You have not installed any new apps recently.  No app updates have occurred.

However, after a Samsung firmware update, the phone will (very frustratingly) no longer make voice calls.  It will attempt to dial and give up after 10-30 seconds without ringing through. 

Booting to safe mode does not help, but does remove all your widgets.  (ARGH!)

Possible solution:  The firmware update has enabled voice-over-LTE (VoLTE) calling support, but your carrier / access point doesn't support/allow for it.

To fix, go to Connections -> Mobile networks -> VoLTE calls and disable VoLTE calling.

You should be especially suspicious of this feature if you are using a femtocell or cell phone boost device.  These devices probably don't support the newer VoLTE feature.

Oh, and hey to Google - F-you for removing all my widgets in Safe Mode.  My God, you couldn't have saved their previous state somewhere to restore afterwards?  Seriously, that is SO HARD?

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