A:Answer Not all of Samsung's phones are supported by Square anymore, though we do our best to reach all devices. Square will run on most Android devices with the following features:
Android v5 or higher
3.5 mm headset jack (which includes a microphone input)
GPS
There are several thousand Android devices on the market, and we strive to support them all. In some cases, however, the Android device may meet all the requirements for compatibility but still doesn’t communicate properly with Square hardware or with the app.
To check and see if your device is supported, visit the device compatibility page: squareup.com/compatibility
