I was offered the UP24. Written in small print on the packaging: either work with smartphones and tablets Apple (since 4S) or with Android V4.3 or later and Bluetooth 4.0 BLE (Low Energy) And of course only the high-end smartphones and / or recent are compatible. With my Hunawei Y300: estoppel with a nice message. So before you buy check compatibility on the site Jawbone. [...]