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

Most dual SIM devices can only utilize one sim card for a data connection at a time because both sim card usually share one radio.

With that said, there are a lot of options available like bonding a Wi-Fi connection and cellular connection on Android or iOS, OR using Pair & Share, to easily share your Cellular connections back and forth between multiple Speedify users (devices) on the same local network, without the need for additional cables or adapters.

You can learn more about using Pair & Share here.