I was just searching the forums for the same issue. I am new to Zwift, with an Atom v2, the gear shift indicator does not display on either of my Samsung Android devices, a Galaxy Tab S7 and a Galaxy S10 phone. The former connecting via Bluetooth, the latter via ANT+.
I’ve tried the beta and general release firmware on my Atom, same issue with both. I was considering trying my windows laptop, just to test 100% that it’s an Android issue, not some problem with my Atom.
Peter, another thing to bear in mind for your potential Galaxy Tab purchase, ANT+ doesn’t work in the current S7 firmware. Googling around, it may never be added, on some other recent Samsung Tabs it’s randomly added in an update quite a while after launch, some not (…yet?). I was able to use my (ANT+ only) Garmin HRM Tri with my Galaxy S10 phone no bother, but had to use a USB-C adapter and ANT+ dongle for it to work with my Tab S7. In the end I switched to the Bluetooth Tickr FIT HRM armband, which is more comfortable for riding and works great with both phone and tab, no adapter faff.
The Galaxy Tab S7 is excellent by the way, so don’t let the lack of ANT+ or gear shift put you off. With a bit of luck and time hopefully both will be fixed in updates.
It’d be great to hear official comment from Zwift on the gear shift display issue and when/if we’ll likely see a fix. I imagine there’s a lot of Android users quietly suffering with it. I’m happy to test/try things if it’ll help identify the problem.