1. "Touchscreen first" UX
2. Heavier than it needs to be
3. Worse battery life compared to a non-Android device
Using a touchscreen in the rain is impossible. Running out of battery sucks. Going for a run with a 240g brick is no fun, it'll pull your pants down to your knees and trip you.
Compare the specs:
Hiby R1
Dimensions: 86.9 x 60.6 x 14.5 mm
Weight: 118g
OS: HibyOS
Battery: 19 hour play time
Price: $159.00
Hiby R4
Dimensions: 129.6 x 68.3 x 18.5 mm
Weight: 231g
OS: Android 12
Battery: 11 hour play time
Price: $249
These are the things matter to me, in addition to the UX, sound quality, Bluetooth support, expandable / removable storage and sane file-based playlists.