I brought myself a new step counter watch, I was successful in connecting the phone and the watch the first time via Bluetooth, but after a day I noticed the connection had dropped. I then tried connecting the watch and and phone again, but when I tried my phone kept saying invalid passcode or pin, I have tried restarting my phone and the watch, putting the watch back to factory settings, there is nowhere on the watch to put any passcodes, hope this makes sense and hopefully someone can help me.