I was curious, so I enabled my phone's hotspot, but had mobile data turned off.
I connected my tablet to the hotspot.
I held down play on my wiim mini for 10 secs then set it up via the wiim app, choosing the hotspot.
It connected / set up fine and tried (and obviously failed) to do a firmware update check.
I disabled my tablet's bluetooth.
From the wiim app, My Music (i.e. files on my phone) play fine to the mini.
Which is ideal, as I don't need an internet connection at all to be able to stream my local files to a wiim, and then on to a dac / amp of my choice when in the middle of nowhere with no phone signal!
Looks like
will be getting another mini when next on special, and going dac/amp/headphone shopping!
Would be nice to have a single box solution, but the mini's aux out is, well, lacking, and the pro plus doesn't have one.