Problem description:
Activating/deactivating call forwarding just gives error messages like "Carrier info - Connection problem or invalid MMI code.(0)".
Issue is independent if call forwarding is set by MMI codes / USSD codes or by using the settings in Phone app.
=> Please help to fix that problem. Am I doing something wrong?
Five ways to reproduce the issue:
1) "Phone" app > settings > Calling accounts > Call forwarding
> error message = "Call settings error - Network or SIM...
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Activating/deactivating call forwarding just gives error messages like "Carrier info - Connection problem or invalid MMI code.(0)".
Issue is independent if call forwarding is set by MMI codes / USSD codes or by using the settings in Phone app.
=> Please help to fix that problem. Am I doing something wrong?
Five ways to reproduce the issue:
1) "Phone" app > settings > Calling accounts > Call forwarding
> error message = "Call settings error - Network or SIM...
Read more