Mobile Data Settings for T-Mobile

I tried it in two other phones: there I had no problem with the card, it worked out of the box. I checked the APN settings in the two phones. In both cases they used

• Access point name: internet.telekom
• Username: telekom

with a password, which I could not display. (On the Telekom-Forums one can read that the Passwort does not seem to matter.)

I tried these settings with my phone, too, but with no luck.

@mfluch I had similar problems, after came back from my last holiday. There I had a China SIM card in and changed back to German. It did not work for several days, then I made a reset of the mobile data settings, did reboot and choosed the "conncet to internet" shortcut you will find in the notification area. Then I insert the correct configuration again and choosed "conncet to internet" again. Was very strange, but I had several times problems similar like this.

I find out, when it is not possible to activate the internet connection, mostly the shortcut "conncet to internet" does the job better. This kind of shortcuts like the "make a selfie". When choosing "conncet to internet", the half screen gets black and you can choose by SIM.

I just tried and unfortunately the setting doesn't work for me. :-/ I wonder if there is anywhere log files where I can check what goes wrong under the hood...