Genuine mobile flat rate with BTD SIM lock

Nowadays so-called flat rate offers and mobile phone Internet options are available for practically all framework contracts. Most variants are however nothing more than very low-cost tariff options for a closed groups of users. If users call outside the predefined groups (e.g. cross-network, external subscribers) standard, or to some extent considerably steeper costs are incurred.

By opting for the BTD SIM lock you can get round this problem. Based on a programming procedure specially developed for BTD we "open and close" the SIM cards of practically all network service providers so that calls can only be connected within the defined group. You can freely define the size of the group yourself. As such, you are protected at all times from any unpleasant surprises.