Quite a bit different the experience in the activation and hotline. His new cell phone number you have to do not forget this during activation (when porting one knows of course also so), because this will be communicated in any of Bestaetigungsmails, and the phone number you need in order to then log online and complete the activation. Yea, I have to write it down smoothly forget trying to call the hotline at a World Cup Friday at 16:30 to check it, Nope. Hotline reached Mon-Fri 0900-1700, because of World Cup on the day but earlier closing time. A subsequent email to the support was only answered on the ensuing Donnerstad, but since then stood g; uecklicherweise my new phone number in it and from then on it went like clockwork. So I could not go as planned to use my cell phone on Saturday shortly after the first attempt to activate abroad, but now it comes.
For network coverage I can not (yet?) To say so much, but in some contributions here is what to do so.