
We knew that phone carriers aren't generally big fans of VoIP services in general, but T-Mobile Germany is taking it to the next level. Apparently they've decided that sipgate's flagship VoIP software is encouraging their users to jailbreak their iPhones and use VoIP software to place calls, both which they say is against T-Mobile's user contracts. The solution? T-Mobile has asked them to cease and desist offering their software entirely.