URC7955, URC7980: Which phones support the Smart Control App?

The One For All setup App is only intended to be used with smartphones.
Supported models include the following:

iPhone 4s and later

Android 4.3 and later
Bluetooth Low Energy (a.k.a Bluetooth Smart) compatible

N.B: The Smart Control uses Bluetooth Low Energy, also known as Bluetooth Smart.
(you can also use an app called BLE checker to find out if your smartphone uses Bluetooth Smart).