BLACKSIM Servicewelt is a free Android app developed by Drillisch Online GmbH. It falls under the category of Business & Productivity, providing users with a comprehensive service world for managing their cell phone tariff.

With BLACKSIM Servicewelt, users can conveniently access all the important information about their tariff on their smartphone or tablet. The app allows users to check and update their personal customer information, view their invoices, and easily order a tariff change. Users can also book or deactivate additional options, activate or block services while on the go, and order a replacement card or MultiCard.

The app goes beyond just tariff management, offering additional features such as the ability to order the repair service for a mobile phone and track the status of the repair. Users can also find help in the FAQ section and contact the support team via the contact form.

BLACKSIM Servicewelt aims to provide all the necessary tools and information for effectively managing cell phone tariffs. Please note that the constant availability of the app cannot be guaranteed.