I bought the JBL tune 510bt about a month ago. At first it connected well with both my phone and laptop. It sometimes gave some issues, but always ended up being able to connect. Recently, I haven't been able to connect to either my phone or laptop anymore. I've tried making both devices forget the pairing and trying to pair again. My headphones are not even being detected as available devices anymore. I've found a post online saying JBL headphones sometimes have issues with connecting and to reset the headphones by pressing the and - volume button simultaneously until the light flashes. I did this, still no luck. Did anyone have a similar issue and were you able to solve it?