Planet Computers Cosmo Communicator (planet-cosmocom)
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| Linux is officially supported by Planet Computers, see here. | 
| This device has been tested with postmarketOS, but its device package has not yet been added to the postmarketOS repositories. This means that it cannot be selected in pmbootstrap. Status: kernel compiles, boots to login (software rendering only) | 
| Manufacturer | Planet Computers | 
|---|---|
| Name | Cosmo Communicator | 
| Codename | planet-cosmocom | 
| Released | 2019 | 
| Type | keyboard handset | 
| Hardware | |
| Chipset | MediaTek Helio P70 (MT6771T or MT6771WT?) | 
| CPU | 4x Cortex A73 @2.0GHz 4x Cortex A53 @2.0GHz | 
| GPU | ARM Mali G72 MP3 @800MHz | 
| Display | 2160x1080 FHD+ and external 570x240 AMOLED | 
| Storage | 128 GB | 
| Memory | 6 GB | 
| Architecture | aarch64 | 
| Software | |
| Original software The software and version the device was shipped with. | Android 9.0 | 
| Extended version The most recent supported version from the manufacturer. | Android | 
| Mainline Instead of a Linux kernel fork, it is possible to run (Close to) Mainline. | no | 
| Flashing Whether 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). | Works | 
| Battery Whether charging and battery level reporting work. | Untested | 
| Screen Whether the display works; ideally with sleep mode and brightness control. | Works | 
| Touchscreen | Broken | 
| Multimedia | |
| 3D Acceleration | Broken | 
| 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 | 
| Sensors | |
| Accelerometer Handles automatic screen rotation in many interfaces. | Untested | 
Contributors
- Cosmic
- shymega - have gotten postmarketOS to boot on Cosmo, only with software rendering, and custom initramfs hackery.
Users owning this device
- Affenull2345
- Codycode (Notes: Modified keyboard)
- Dragon788 (Notes: have one of these that I primarily play with UBPorts on but would certainly like to test with pmOS)
- Senorsmile (Notes: Daily backup)
- Shymega (Notes: Two of these. One as a backup phone, one given to me by Planet Computers.)
Mainline Kernel
A mainline kernel for mt6771 and Planet Cosmo Communicator with minimal support is available here: https://github.com/affenull2345/linux/commits/mt6771