3 stars: The app is okay to add funds for prepaid, but from an accounting perspective it's not ideal. Is like to be able to see when my account balance was charged, and for what purpose, but none of that is possible.
3 stars: Good, but data while traveling is very expensive.
5 stars: Very simple to handle
5 stars: Works very well, no issues so far.
4 stars: Very useful, but would be even better, if it would show the used/remaining units to the prepaid customers too.
5 stars: It is a helpful,within seconds you add money on your prepaid account.
5 stars: very good, very user-friendly. the service hotline is great, too. german people \u0026 people who come to germany, buy a congstar simcard! don't accept \u0026 respect a carrier who doesn't respect you \u0026 your privacy...! congstar is a good, honest \u0026 genius carrier! internet is fast! not as some others who pretend you 100 MB per sec \u0026 give you 80 kb. go congstar!
5 stars: Quick and easy
3 stars: What bothers me the most is that you cannot see easily when your next payment period starts. It is quite hard work to find that out. Also, you cannot see how much your current mix is. Besides that it does what it is supposed to.
4 stars: Useful and very easy to use and understand! Sometimes it takes a while to actualize the calling time.
5 stars: It's very clean and intuitive to use now. You get done, what you wanted to do quickly e.g. checking usage of data or minutes called or chang...