Bought a tariff at DeutschlandSIM me based on the recommendation of a colleague and am so far satisfied. The delivery was prompt and the number portability from my prepaid cell phone worked fine. After my previous provider has initially written by 4-weeks duration, I was only shocked, but with the support of the DeutschlandSIM Hotline went but in a few days on the stage. Also, I can not say anything negative about the accessibility of the Hotline. I am IT'ler and therefore used to dealing with hotlines. In my experience, there are significantly worse. The service website is clearly laid out, not too intrusive designed and used wordings. With the plethora of deals in the tariff jungle for smartphones, is one for me Germany SIM to the better.