Provider Check is a free Android app developed by Robert Gering and categorized as a Utilities & Tools program. It is an app that allows you to check the network and portability of any phone number you input or select from your address book. Additionally, the app provides information for foreign and landline numbers.

One of the main features of Provider Check is its ability to determine the network operator or target network of German mobile numbers, excluding discounters. The app can also detect ported numbers, identify the location of landline numbers, and determine the country of international numbers. The app also uses encrypted data transmission, ensuring the security of the information you input.

Please note that all information provided by Provider Check is without guarantee. To perform a live network check, phone numbers are transmitted to the app's server without any association to a name or other personal information. After transmission, the phone numbers are immediately discarded and not stored on the server.