: This is the primary app for managing travel data and calling plans. You can download it from the Google Play Store .

If you have received credentials for a "7-day" SIP account and need a generic "softphone" to use them, you should download a standard SIP client:

: You may need specific .cnf or .xml configuration files. Templates and firmware for various models can be found on community resource sites like Firewall.cx .

Most "Mobilise" or "MobileSIM" services operate through dedicated apps that automatically configure these profiles for you.

: A lightweight, open-source SIP softphone available for download at microsip.org .

If you are trying to "post" or "load" a SIP configuration to a physical device (like a Cisco IP phone) for a 7-day period:

: A popular cross-platform SIP client often used for manual configurations.