=> Profile with Google-Services: I gave all kind of authorizations to "Google Play Services" and to the Voicemail App: however the step "verify your mobile number" failed immediately with the message "Number could not be verified"
=> Main Profile without Google Services: same result
=> I installed Google Play services on my mail Profile: same result but it took a longer time until I got the message "Number could not be verified"
____I removed the SIM and put it again in my phone
==> suddenly I was able to add my mobile Phone number to Telekom Voicemail in my second (Google-)Profile
( Steps: verify your mobile number => SMS is sent to me => I insert code from SMS => number is added to Telekom Voicemail )
__ I was not 100% happy, because the history of the old voicemail messages were not visible. ___
=> So I retried this procedure on my first profile ( without and with google services). Verifying my mobile number worked correctely, but finally I got the message, that "restoring my data" ran on error.
I tried it several times, always a SMS was sent to me and I inserted the code in my Voicemail-App. I logged out from Telekom in my second profile, but this did not change anything.
___frustrated I uninstalled Telekom Voice Mail in both profiles and Google Play services in my mail Profile
=> New Problem!!!! in both profiles with google Services installed: Telekom asks me to verify my number. It says, that SMS was sent out to me successfully , but no SMS is received. ( I cross checked: I can send and receive SMS with other persons )
I'm completely confused and lost.
I will continue tomorrow.