Quote:
Originally Posted by razfaz
I recieved my SIM today. Everything is working, except when I switch to UMTS only mode, the SIM gives a "Sim not registered" massage and I'm unable to log on any German network. It wouldn't matter, but I'd like to use the card next month in Japan, where it is UMTS only. Anybody with the same problem concerning UMTS?
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They may prohibit UMTS roaming in markets where GSM is available/cheaper. I've used Riiing in Japan even when UM didn't list Japan as available.