Hi cyclone1,
I don’t use a z fold 3, but I have been using a Samsung Galaxy S9+ very successfully ever since we first started testing the iGRID prototype software almost two years ago. It has performed consistently throughout - in fact it was originally ‘too good’, in that it was seeing too many 4G masts from altitude, so I had to reposition it so that it is partly screened from the ground. In practice, simply keeping the phone in your pocket with the hotspot turned on should give great results (my original tests involved flights of up to 2 hours at altitudes up to around 6,000 ft with consistent results.)
Hope this helps.
Best Regards
Peter
p.s. Thinking about it, I should probably consider a phone upgrade - but the S9+ still does everything I need it to do and continues to do them does well.
