Can Speedify combine 2 cellular connections from a single dual sim phone?

Currently, Speedify does not support dual cellular connections on dual sim capable Android or iOS devices. Also, most dual SIM devices can only utilize one sim card connection for a data connection at a time. 

If you are using both cellular connections on your phone then the processes can create heating issues and faster battery drain with your device.

With that having said, there are a lot of options available like bonding a Wi-Fi connection and cellular connection on Android or iOS. 

For optimum performance we suggest you try tethering to your computer using two smartphones, please see these links below for more options:

Android

iOS