I have had seven Ipad mini's over the years thee off them have failed, Two from overheating one simply a dud.
Apple have been very good in replacing them, When the last one went (black from heat) but did not catch fire
I returned from trip and whent to my CFI for a flight to see if I could open the door of the tecnam eaglet to toss it
out (all good). I use ozrunways also on an old Samsung s5 that sits on front a frame with velcro it continues
much longer with better signal it only drops out in very remote areas like between Alice Springs and Canon stock route.
The new Mini 4 seems to not have same problems.