You can only connect your watch to one device at a time, if you are trying to connect to a new device you will first have to remove your watch from the other device. Check that your device is updated to Android 5.0 or iOS 11.0 or later.
iOS device users should go to their Bluetooth settings, unpair or forget this device and pair it again.
Open the SMART-TIME App on your phone, select ‘Device’ and then choose ‘Add Device’.
DO NOT PAIR WITH THE FITNESS TRACKER IN YOUR BLUETOOTH SETTINGS - if you have already done this, please go to your Bluetooth settings and choose ‘unpair’ or ‘forget’ the connection to your F1 Fitness Tracker or F2 Smart Watch. It is important to pair through the SMART-TIME App otherwise you may not be able to synchronise your data with the F1 or F2.
For the F1, select ‘B3C’ from the Bluetooth list on the App. The watch will show a paring notification. Click to confirm pairing – you will then seethe Bluetooth icon on the top right of the watch or in the quick setting page (slide down page) turns to Blue, then Bluetooth is connected.
You will then be asked to confirm the connection on your watch.