Wifi connection on iphone

Hello All

I had my reach connected to my iphone hotspot yesterday. Today I cannot get the reach to connect
The phone is on version 10.3.2 and reach is on the latest version.

I see some had problems earlier is this still the same?
SO I just tried my ipad will connect to myphone hotspot then the reach unit will but it does not show up in fing?
Any help greatly appreciated.