Registration with Rufnummernportierung ran perfectly, I was still on the same day
confirmation with the exact date of the calling line identification.
(Was handed + confirmation of the Congstar my number).
Reception is of course, location Depending but for me, the change has only by the lot
better reception in my area paid off.
In addition, of course, is still the unbeatable price and a (so far) fast service.
All the calls not too much in all, a super-effective tariff for smartphone owners,
and from time to surf the Internet and / or want to be accessible by e-mail.
Note: The items are often DeutschlandSIM in flash range (usually 5 instead of 20)
So from time to time, daily if you still want to save a few euros. :)
-OT-