Samsung Galaxy J1 mini (samsung-j1mini3g)
Appearance
| This device runs a Downstream kernel. Some UIs will not work, and most features (3D acceleration, audio, etc.) may be broken. |
|
J1 mini running XFCE4 | |
| Manufacturer | Samsung |
|---|---|
| Name | Galaxy J1 mini |
| Codename | samsung-j1mini3g |
| Released | 2016 |
| Type | handset |
| Hardware | |
| Chipset | Spreadtrum SC8830 |
| CPU | 4x ARM Cortex-A7 |
| GPU | Mali-400 MP2 |
| Display | 480x800 TFT |
| Storage | 4 GB |
| Memory | 768 MB |
| Architecture | armv7 |
| Software | |
Original software The software and version the device was shipped with. |
Android 5.1.1 |
Extended version The most recent supported version from the manufacturer. |
Android |
| postmarketOS | |
| Category | downstream |
Mainline Instead of a Linux kernel fork, it is possible to run (Close to) Mainline. |
no |
pmOS kernel The kernel version that runs on the device's port. |
3.10.106 |
| Device package |
|
| Kernel package |
|
Flashing Whether it is possible to flash the device with pmbootstrap flasher. |
Partial
|
|---|---|
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. |
Partial
|
Screen Whether the display works; ideally with sleep mode and brightness control. |
Works
|
Touchscreen |
Works
|
| 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
|
| Sensors | |
Accelerometer Handles automatic screen rotation in many interfaces. |
Works
|
Contributors
- dolphinchips
Maintainer(s)
- dolphinchips
Users owning this device
- DolphinChips (Notes: Playground)
How to enter flash mode
Hold + + buttons to enter flash mode. Hold + + buttons to enter recovery mode.
Installation
Currently pmbootstrap flasher flash_rootfs fails at 17%, but pmbootstrap flasher flash_kernel works, so there are two ways:
- install on sdcard (untested)
- install via android recovery zip
Wifi
To make wifi work, we need some binary blobs (download and wcnd, both located at /system/bin/ in stock rom), so we can:
- use libhybris
- see how Samsung Z1 handles it in Tizen (uses some Spreadtrum chip)
- recompile them from leaked sources
Images

See also
- pmaports!533 initial MR
- Kernel source