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Mobvoi Ticwatch E3 (mobvoi-ricefish)

From postmarketOS Wiki
Mobvoi TicWatch E3
File:mobvoi-ricefish.jpg
Manufacturer Mobvoi
Name TicWatch E3
Codename mobvoi-ricefish
Released 2021
Type watch
Hardware
Chipset Qualcomm Snapdragon Wear 4100 (SDM429w)
CPU 4x 1.70 GHz Cortex-A53
GPU Adreno 504
Display 360x360
Storage 8 GB
Memory 1 GB
Architecture aarch64
Software
Original software
The software and version the device was shipped with.
Wear OS H-MR2
Extended version
The most recent supported version from the manufacturer.
Wear OS
Mainline
Instead of a Linux kernel fork, it is possible to run (Close to) Mainline.
no
Features
Flashing
It is possible to flash the device with pmbootstrap flasher.
Untested
USB Networking
After connecting the device with USB to your PC, you can connect to it via telnet (initramfs) or SSH (booted system).
Untested
Battery
Charging and battery level reporting works
Untested
Screen
Display works. Ideally with sleep mode and brightness control.
Untested
Touchscreen
Untested
Multimedia
3D Acceleration
Untested
Audio
Audio playback, microphone, headset and buttons.
Untested
Camera
Untested
Connectivity
WiFi
Untested
Bluetooth
Untested
GPS
Untested
Modem
Calls
Untested
SMS
Untested
Mobile data
Untested
Miscellaneous
FDE
Full disk encryption and unlocking with unl0kr.
Untested
USB OTG
USB On-The-Go or USB-C Role switching
Untested
Sensors
Accelerometer
Auto screen rotation works in desktops e.g. Phosh or Plasma Mobile
Untested

Maintainer(s)

Users owning this device


ADB and Fastboot Over USB

While a bluetooth connection can be used for ADB debugging while booted into Android, a wired connection is necessary for doing anything in Fastboot. Unlike some Wear OS smartwatches, the TicWatch E3 has a 4-pin connection on the back, which can be used for a USB connection. However, the included charging cable only has 2 pins, which do not carry data.

Some people have found that the old charger from the TicWatch Pro 4G (which had 4 pins and allowed data transfer) can be modified to fit the TicWatch Pro 3. The TicWatch Pro 3 and E3 should be similar enough that this method will still work. See this Reddit comment from someone that got it to work.

TODO: try modding a USB cable for this and report back.

See also