Microsoft Lumia 640 DualSIM (microsoft-dempsey)
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|Name||Lumia 640 Dual SIM|
|Original software||Microsoft Windows Phone 8.1|
|Chipset||Qualcomm MSM8926 Snapdragon 400 (28 nm)|
|CPU||Quad-core 1.2 GHz Cortex-A7|
|Display||IPS LCD capacitive touchscreen, 16M colors 5.0 inches, 68.9 cm2 (~67.6% screen-to-body ratio) 720 x 1280 pixels, 16:9 ratio (~294 ppi density) Corning Gorilla Glass 3 ClearBlack display|
|Non-Android based device||✔|
Users owning this device
There is a way to get linux to boot on the device. Porting edk2 is needed, it is described in this guide : https://github.com/konradybcio/Lumia-EDK2-Guide. Also this edk2 would probably work with some small modifications : https://github.com/Dominduchami/Lumia830Pkg. Unfortunately there is no efistub or efiframebuffer support in the newest msm8226 kernel, so backporting it is required to get pmOS to boot on it.
If you got some information regarding this, please add it here.
It's possible to unlock the bootloader using WPinternals here, the device needs to be on Windows 10 Mobile. From there it may be possible to get an LK bootloader following this guide here (lk and boot shim). There is a Telegram group chat for Android4Lumia that may have more information that I missed on my brief skim through it here.