[UNOFFICIAL BUILD] Samsung Galaxy S20 FE (r8q) Snapdragon! for /e/OS-a15

Samsung Galaxy S20 FE (r8q) Snapdragon! for /e/OS-a15 3.0

Supported devices:
Samsung Galaxy S20 FE SM-G780G
Samsung Galaxy S20 FE 5G SM-G781B
Do not flash on Exynos models!

e-3.0-a15-20250612-UNOFFICIAL-r8q.zip
https://sourceforge.net/projects/eosbuildsronnz98/files/SamsungSmartphones/e-3.0-a15-20250612-UNOFFICIAL-r8q.zip/download

Please see sources and install instructions including recovery here:
https://xdaforums.com/t/rom-15-unofficial-stable-lineageos-22-2-for-samsung-galaxy-s20-fe-4g-5g-snapdragon-14-04-2025.4669975/

Use it at your own risk!
Please support the developer(s)!

3 Likes

Thank you for this build!

I have noticed there is a bug somewhere with sending SMS messages. Receiving SMS works but sending results in the message showing as “Sending…” for a minute or so and then errors out. I also tried Fossify Messages from F-Droid and it errors out too saying it’s a network error.

Prior to installing this build the phone was updated to latest Samsung firmware (IIRC OneUI 5.1 and Android 13) via the built-in updater, then OEM unlocked.

Edit: I should clarify this is an SM-G780G.

Alright, so SMS sending just randomly started working. I have no idea how and the only thing I can think of is that I rebooted the phone a few times, while trying to find a way to reproduce another issue where the navigation bar visually shifts to the right sometimes after rotating the screen in Findroid.

That second issue os proving hard to reproduce predictably but it’s definitely related to screen rotation, however it doesn’t seem to happen in Grayjay or at least not often enough for me to have seen it yet.

Never mind, the bug has a chance of triggering with anything that plays fullscreen video. Findroid just seems to be particularly good at triggering it. Reversing the buttons in the settings restores them but it’s an annoying workaround.

This might not be specific to the S20 FE but unfortunately I don’t have any other device capable of running Android 15.

Update with updated sources:

e-3.0.4-a15-20250725-UNOFFICIAL-r8q.zip

The S20 FE Snapdragon is now officially supported by LOS again!
https://wiki.lineageos.org/devices/r8q/variant1/

2 Likes

@ronnz98 are there plans to make your effort offical by murena? since it’s supported by lineage os again

@Manoj : Please consider the S20 Snapdragon

Hi @ronnz98 the device was to be released as a supported device. Let me check why it is stuck. Thanks for the reminder.

1 Like

Update for /e/OS-a15 3.1.3:

e-3.1.3-a15-20250909-UNOFFICIAL-r8q.zip

Next update might be an official one…

@ronnz98 i saw that Samsung Galaxy S20 FE, r8s is now supported
Models:

SM-G780F
SM-G780F/DSM
SM-G780G

Other models are not supported

ive got the SM-G780G/DS which would be “r8q” not “r8s” and snapdragon instead of exynos.

Is this about to be supported too?

Thanks

according to Supported devices - Google Play Help - Google Support

Retail Branding Marketing Name Device Model
Samsung Galaxy S20 FE r8s SM-G780F
Samsung Galaxy S20 FE r8q SM-G780G
Samsung Galaxy S20 FE 5G r8q SM-G7810
Samsung Galaxy S20 FE 5G r8q SM-G781B
Samsung Galaxy S20 FE 5G r8q SM-G781N
Samsung Galaxy S20 FE 5G r8q SM-G781U
Samsung Galaxy S20 FE 5G r8q SM-G781U1
Samsung Galaxy S20 FE 5G r8q SM-G781V
Samsung Galaxy S20 FE 5G r8q SM-G781W

.

according to https://xdaforums.com/t/rom-official-lineageos-22-2-for-samsung-galaxy-s20-fe-4g-5g-snapdragon-27-07-2025.4669975/

SUPPORTED DEVICES

  • Samsung Galaxy S20 FE (SM-G780G)
  • Samsung Galaxy S20 FE 5G (SM-G781B/SM-G781N/SM-G7810)
  • Exynos is not supported! (SM-G780F)

.

accoding to Info about r8q variants | LineageOS Wiki

Capture du 2025-09-10 23-39-47

and

Capture du 2025-09-10 23-44-27

.

@Manoj there is an error in the official documentation Info about Samsung Galaxy S20 FE - r8s

Capture du 2025-09-10 23-14-19

SM-G780G is not expected to be covered by (r8s) but by (r8q)

1 Like

Well my S20 FE r8q is the G780G Snapdragon (but with DS?!)
Also in the Wiki page of murena it’s just saying exynos instead of both.

Would like to have a clear answer, before i might flash my phone in the next few months.

DS means Dual SIM variant

@piero

Man,
Of course it’s Dualsim, i am interested if it is supported or not nothing else…

1 Like

https://wiki.lineageos.org/devices/r8q/variant1/

vs.

https://doc.e.foundation/devices/r8s

this is what i do not get, yet.

hi guys thanks for your work…

Im looking to get conformation that this can be installed on the Rogers canadian sm-g781w ?

ive been getting a lot of conflicting info and i would really appreciate a conformation.

thanks!

Supported models

SM-G780G
SM-G780G/DS

@ronnz98 so your r8s built for /e/ os supports the same as the r8q by lineago os?

snapdragon sm-g780g/ds ?!

r8s is for Exynos S20 FE variants and r8q is for Snapdragon S20 FE variants

So, can I use r8s for G780F/DS (not DSM) ?