If you use the standard GoPro app on your (Android) phone you get no video back when it starts to record - the phone just goes 'busy' as mentioned.
There is however another app called GoPro CamSuite Pro which will give you FPV whilst the GoPro is recording. Its not free but its only pennies to buy.
The usual lag issues still apply though....
There is however another app called GoPro CamSuite Pro which will give you FPV whilst the GoPro is recording. Its not free but its only pennies to buy.
The usual lag issues still apply though....