
Cristiana Istrate
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So many problems with logging in.. Edit to respond: the same issues that so many people have when logging in: "Da hat etwas nicht geklappt" or the fact that I cannot even login in with a code from my messages. Also, sometimes the option for code login appears, sometimes it doesn't. Like other users, I have tried with erasing the cache, reinstalling the app, and still nothing. Edit 2: I can login on the website, but it's useless for recharging the prepaid card
Telefónica Germany GmbH & Co. OHG
November 21, 2025
Hello Cristiana Istrate, danke für dein Feedback. Bitte entschuldige. Hat es inzwischen mit deinem Login geklappt? Deine Prepaidkarte kannst du alternativ auch im Mein o2-Onlineportal aufladen, mehr Infos dazu findest du auf unserer Webseite.

Mr. Phaentom
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requires a stock rom. not recommended anymore. Update: the stock ROM requirement doesn't deliver "smooth and safe operation". I hardly accept Banking apps requirements, but those working on my phone. This app won't but intrude privacy with this method. Update 2: If your ROM does support blocking Google integrity checks, this App works just fine.
1 person found this review helpful
Telefónica Germany GmbH & Co. OHG
November 28, 2025
Hello Mr. Phaentom, thank you for your update. Unfortunately, challenges may arise with alternative operating systems. We have made a change to the configuration, which will go live in calendar week 49. Until then, you can view and manage your contract details in the Mein o2 online portal.

Daniel P
just terrible, phone support, email support and the app. second time I'm abroad and only have problems. Last time roaming was broken the whole trip and they could fix anything. made my trip a hell until is was able to buy 3rd party roaming via VPN. Now I can not even install a esim, every other provider just installs from the app. They want to sent it via snailmail, like I'm living in the last century. Definitely time to switch providers
Telefónica Germany GmbH & Co. OHG
December 2, 2025
Hi Daniel P, thanks for your review. Is it about the QR code?