my experience is that mobile hotspot is a pain to get setup sometimes, but once done its much more reliable then joiku.

Joiku crashes alot of the time for me i.e. connections dont last more then 10 minutes or so - I have to constantly restart and reconnect etc.

Once I got mobile hotspot working, the connections stay up for more then an hour (or even all night) most of the time, so its alot more reliable for me

YMMV