The SIM Tool Manager app provides a convenient way to display and manage contact numbers stored on your SIM card. You can easily access and backup your important contacts to the SD card in .vcf format. The app allows you to copy numbers to your phone, make calls and send messages, add new contact numbers to the card, and easily delete or modify existing contact numbers.

In addition to contact management, the app also provides detailed information about your SIM card, device, and network operator. With support for both light and dark themes, you can choose the visual style that suits your preference. It's important to note that the app only supports single SIM functionality, and caters to users with a single SIM card.

With this app, you can efficiently handle your contact numbers, perform backups, and access detailed information about your device and network operator. Simplify your SIM management with this straightforward and user-friendly tool.