I have a question regarding instant hotspot between one iphone to another:

It is buggy to say the least, with the phone sometimes showing up in the wifi screen, sometimes not.

Does instant hotspot give the ability to reconnect automatically after disconnecting? Say I don't use the iPhone for half and hour, and then when I turn it on, it does not automatically reconnect to the other iphone hotspot. My understanding is that the usage of bluetooth should enable this function. What I now have to do all the time is go to the wifi screen and select the hotspot again.

Any advice or experience on this matter from anyone is greatly appreciated.