I pre-activate international roaming in the Philippines and received confirmation text, that it is in process. I should receive a text message upon arrival in Germany.
Access to T-Mobile, Vodafone and E-Plus are denied. The device shows no signal, whereas other local sim cards inserted shows a signal w/o any problem. A hard reset ( turning off the device, taking off the battery and sim ) for 5 minutes does not show any progress - still no signal to any local provider.
The device is a Nokia 6103. Before I went to the Philippines it was connected to O2 network, but now no more. Any solution is highly appreciated.
Since Aug. 4, 2017 the problem is solved. Now I have Network Access to O2 again. I didn't made any changes afterwards I reported the problem. Thanks to ones who assisted in solving the problem. I'll observe the next time when I'll arrive at Germany.