It seems, there are not many Quintus running Ubuntu Touch out there and since I have been asked about working features I thought I'd make an entry here for those who are interested.
Since there's no Quintus sub section, yet I write it here until it can be moved to its according place.
I took this list from the Ubuntu Touch device page.
I don't have the device for a very long time, so I will update things marked "untestet" (❓).
These are my personal observations on stable channel.
Actors:
✅ Manual brightness
❌ Torchlight
✅ Vibration
Camera:
✅ Flashlight
✅ Photo
✅ Video
✅ Switching between cameras
Cellular:
✅ Carrier info, signal strength
✅ Data connection
✅ Incoming, outgoing calls
❓ MMS in, out
✅ PIN unlock
✅ SMS in, out
❓ Change audio routings
❓ Voice in calls
✅ Volume control in calls
Endurance:
✅ 24+ hours battery lifetime
❓ 7+ days stability
GPU:
✅ Boot into UI
✅ Hardware video playback
Misc:
❓ AppArmor patches
✅ Battery percentage
❓ Offline charging
✅ Online charging
❓ Recovery image
❓ Reset to factory defaults
❓ RTC time
〽 Shutdown / Reboot (see bottom)
❓ Wireless External monitor
✅ Waydroid
Network:
✅ Bluetooth
✅ Flight mode
❓ Hotspot
❓ NFC
✅ WiFi
Sensors:
❓ Automatic brightness
❌ Fingerprint reader
✅ GPS
✅ Proximity
✅ Rotation
✅ Touchscreen
❌ Double touch to wake
Sound:
〽 Earphones (see bottom)
✅ Loudspeaker
✅ Microphone
〽 Volume control (see bottom)
USB:
❓ MTP access
❓ ADB access
Reboot not always working. The screen turns off but it doesn't come back again. Hard reboot is necessary.
Bluetooth earphones work. The USB-C to 3.5mm adapter that came with the phone works, too. Another one I tested does not work. So this depends on hardware.
When listening to Music in the Music App, sometimes sound goes completely down on switching tracks. Same happens occasionally when switching position in the video app.
In some cases, but especially after the container has been frozen, Waydroid does not start again after having been closed/stopped. The only workaround working for me is running
systemctl restart waydroid-container
in the terminal (sometimes twice). Then Waydroid will start again.