Where Does the 1&1 Control-Center App Store Data?
1&1 Control-Center keeps contracts in private storage on Android and iOS under one shared ID. Account data survives reinstall.
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Provider 1&1 runs one shared oneandone package on both mobile OSes. Private storage holds login session plus contract cache. DSL and mobile contracts share the login. The oneandone string predates the 1&1 brand refresh, which is why store searches for einsundeins miss it.
Bills live server side. Local data is session plus usage views. Fresh login restores contracts after reinstall. Keep the customer number ready; it speeds up support hunts. Router passwords stay on the device hardware, not in this app.
Where 1&1 Control-Center stores this, by platform
/data/data/com.oneandone.controlcenter
Private session and contract cache for the shared oneandone package. Contracts sync from 1&1 servers after login.
/var/mobile/Containers/Data/Application/<guid>/Documents
GUID container for the same bundle (App Store ID 667892191). Re login restores contracts.
Frequently asked questions
Do 1&1 contracts transfer phones?
Log into the same 1&1 account on the new phone. Contracts and bills sync from servers. Local data holds session and consumption cache. Cached images reload on demand. Local copies clear without account loss.
How do I back up 1&1 bills?
Export bills as PDF from inside the app before wiping. Manual folder copies miss encrypted session stores. Tariffs stay server side. Local state reflects the account. Login restores the saved view.
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