The network has improved considerably by merging in some places. During my China Phone (BlackView Crown) I must allow to utilize both networks Allerding roaming. If you live closer to the border would be of course very unfavorable. So I have it it think again off only when traveling abroad. With most phones, you will not have the problem. Otherwise, unpack, sign up online, assign password and within 1-2 hours it runs. Online portal and AndroidApp are clearly designed, options to delete (eg. B. EU data 100MB for 4.50) and quickly be booked again. Everything went fine. Property now since 2 years a 100 min, 100 SMS 500 MB fare and everything was always in order. Quite as a matter of course that's not. The crashes ever ........;)