Very recent.
Bought an open box TC Helicon Go Solo to get decent audio into my Android phone for live streaming gigs.
It didn't work on three android phones, nor did it work on my WIn 10 computer. Sweetwater said, "It's probably a defective unit. Keep it, we'll send you a brand new one no charge". I said, "OK!". 2nd one was indeed brand-new. It worked the same as the first. Sweetwater quickly said, "Send it back, full refund, here's the shipping label." I sent both units back, refund was very quick. Easy to deal with.
So I'm pleased with how I was treated. And with this unit, my gut says that it'll work on iOS, but not really with Android. Not happy with TC-Helicon, as their web site says that it'll work on Android. But digging deeper it appears I need a "10-pin" USB mini to USB-C cable. No vendors could assure me their cable was 10 pin, and I'm not savy enough to find a work-around...so I bailed.
Go Solo's are now silly cheap on Sweetwater; they must be tired of the hassles. So if you have an iOS device you might wanna throw $20 at it. But that's just my guess that it'll work on iOS.