[ROM][LINEAGEOS][7.1.2][OMS][microG][UNOFFICIAL] Samsung Galaxy Tab A 7.0 LTE SM-T285

[jedld]

This is a port of LineageOS 14.1 for the Samsung Galaxy Tab A 7.0 (2016) LTE SM-T285. LineageOS needs no introduction, it essentially a rename from CyanogenMod due to naming issues.

5.1.1 is the best that you can get from samsung right now and it is not known if they plan to do any upgrades. I have absolutely no idea why samsung chose to stay with the outdated 5.1.1 mid 2016 when we already got 7.1 coming out. This custom rom is probably the best you can get if you want an upgrade from Lollipop. Performance on the latest build is also better, you be the judge.

I don't recommend you use this as a daily driver, but it should be good enough for some. Make sure you read the pending issues below and decide if this is acceptable to you before you flash this rom.

Based off on LineageOS 14.1 sources which is based on Nougat 7.1.2

Device Tree:
=========
https://github.com/jedld/android
https://github.com/jedld/device_samsung_gtexslte.git
https://github.com/jedld/vendor_samsung_gtexslte.git
https://github.com/jedld/kernel_samsung_gtexslte.git

Note: June 27+ builds uses a special kernel that uses newer mali 400 libs https://github.com/jedld/kernel_samsung_gtexslte/tree/performance_2

Update October 17, 2018
====================

Released maintenance patch - Latest security patches + latest lineageos 14.1 patches

Update December 9, 2017
====================

- November Security Patches
- Latest changes from upstream Lineageos

Update October 5, 2017
==================

- Security updates (October 5 patches, blueborne fix)
- updated kernel to 3.10.107

Update September 27, 2017
======================

This is more of an upstream refresh release and some updates to graphics

- Latest upstream changes from Lineageos
- Using source compiled gralloc build. Seems to speed things up
- now using Android N audio policy config xml files. This should allow for a bit more options for tweakers
- Linux kernel now updated to 3.10.106

Update August 21, 2017
=================

hotfix release: fixed audio_policy.conf file which causes earphones not to register.

Update August 20, 2017
=================

Minor updates:

- alarm clock bug seems to have been fixed
- Update android build to NJH47F
- Added microG patches (https://github.com/microg/android_packages_apps_GmsCore/blob/master/patches/android_frameworks_base-N.patch)

Update June 27, 2017
================

Added a build with Substratum OMS support. Please visit the download section, OMS builds should have a -OMS in its archive name. Use this build if you are into themes and want to use Substratum. For details on substratum please visit the relevant forums.

Update June 26, 2017
================

- Enabled hw decoders (should speed up videos and reduce cpu usage), some glitches can still occur though
- Updated Mali userspace and kernel drivers, use updated gralloc and hwcomposer (Should speed up UX)
- Added NTP settings for GPS
- Updated to LineageOS build NJH47B with June 5 security patches
- Fixed KSM causing a battery drain
- A number of tweaks that I can't remember
- issues: Camera won't work with the stock camera app. Seems to work under third party apps. Video is still broken though.

As usual hit the download section for both the newest and oldest builds. This build also uses an experimental kernel under the performance_2 branch:

https://github.com/jedld/kernel_samsung_gtexslte/tree/performance_2

This build is still alpha so there might still be issues.

Update June 5, 2017
================

minor fixes

- Fix wifi hotspot
- Added GPS patches by @Vagr9K (gps should at least load in apps)

Update May 28, 2017
================

- Fix lock screen
- Incorporate kernel fixes c/o @Vagr9K
- Fix bluetooth
- Update to 7.1.2 Nougat N2G470

Update Feb 12, 2017
===============
- really fix mtp and usb connectivity
- There is a bug where pattern unlock won't show up even when you swipe up in the lockscreen. As a workaround make sure you select "Directly show pattern view" in the "pattern unlock settings" page (Click on the settings knob besides the Screen Lock option). If you somehow forget to do this, you can click on a notification to force pattern unlock to show up, if you don't have notifications, connect your device to USB and the charing notification should show up.

Update Feb 11, 2017
===============

- Improved graphics, HW composer, gralloc built from source and updated Mali drivers
- F2FS support for data partition

Update Jan 31, 2017
===============

Bundled with the new perf+ kernel that I am using for the CM-13 buids

Works:

- Wifi/SMS
- Mobile Data (Need to restart once after first boot)
- Audio
- Graphics
- Incoming/Outgoing Calls
- MTP
- Camera (Stills capture works with 3rd party apps)
- Bluetooth
- Wifi Hotspot

Does not work:

- video recording (sometimes works with 3rd party apps like open camera)
- GPS (no fix)


Issues
* Stability issues and some boot loops (Try to disable hardware GPS, or location services which may solve it)
* Wifi and network performance issues when both bluetooth and wifi is on and vice versa (needs confirmation from testers). I'm not sure if this problem also happens under stock. So if someone can give me feedback that would be appreciated.
* Setting alarms using the stock clock app will crash your tablet, use third party apps instead (this is a bug in upstream LineageOS and not related to this device)

Not essential but still needs to worked on

- HW encoders (06/26/2017 hw decoders now supported)

Other Notes:

- selinux permissive

Most of the issues are fixable, I just need more time and encouragement

SM-T280 Users: Unfortunately this rom would probably not work on it since the SM-T285 and SM-T280 have different kernels and slightly different hardware. I don't have access to this device so it would be hard for me to port it over. However I believe there are a lot of similiarities in the device tree that can be shared. If a dev with the SM-T280 is interested I can probably help.

Download
========

Remember flashing an unofficial ROM on your samsung device will probably void your warranty, Samsung representatives will probably not be able to help you as they are still stuck at 5.1.1 land as of now and have no idea how to handle a SM-T285 that is running 7.1.

As always flash this at your own risk. Make sure you have a copy of the stock ROM so that you have something to fall back to, which is highly the case when using an experimental rom.

See DevDB download section. Or get the latest version LINEAGE-OMS-14.1-20181117-UNOFFICIAL-SMT285-ALPHA.zip

For Older Versions/OMS builds see downloads sections:

All Downloads

Note that this rom is pure stock and does not come with the Play Store or any Gapps, I suggest you download a micro gapps package separately and install it via recovery.

There have been reports that recent versions of open gapps don't work properly, it is advised to use older versions instead (e.g. open_gapps-arm-7.1-nano-20161109.zip)

Installation Instructions
==================

Perform a backup of all of your important files. This ROM is experimental and I will not be responsible for your loss of data.

Download the zip file and extract the tar.

Use Odin/Heimdall to flash the tar file to your device. If you are coming from stock or another rom make sure you wipe first using TWRP. DO NOT USE twrp to flash these zip files, they are not configured for that.

Root and customization/ Build Guide
===================

LineageOS unlike Cyanogenmod does not come with root. However you can easily root it by using TWRP to install the latest version of SuperSU.

If you want to customize this ROM and/or repackage it you may use this guide as a reference.

XDA:DevDB Information
LineageOS-14.1 Samsung Galaxy Tab A 7.0 LTE (SM-T285), ROM for the Samsung Galaxy Tab A series

Contributors
jedld
ROM OS Version: 7.x Nougat
ROM Kernel: Linux 3.10.x
Based On: LineageOS

Version Information
Status: Alpha

Created 2017-01-31
Last Updated 2018-10-17

 

[mac231us]

Awesome work!

wow! Thanks jedid!

EDIT 2 amazing...wifi, cellular data for internet, sms, mms, calls all work (and no echo!)

as you wrote...mms (data) and internet (data) work after the 1st reboot

not yet installed gapps

slower than cm13 but an incredible start! (compare with tab s, s2 that even have official marshmallow and even nougat coming or already there for the tab s2 that have all call and data issues...this one is simply a great feat!)

only thing for some reason it will not automatically get the time and day from the cellular network

EDIT 3

a TWRP backup would not restore properly-android.phone.com errors (no root no gapps just basic setup)

strange thing when I flashed gapps (full not pico from Oct for 7.1) had all kinds of google apps force-closes and the network would not connect easily-it did but the errors never ended so I ended up trying to go back to the twrp backup which is when I got the android. phone.com stopped error (repeatedly coming)

am redoing the installation now (maybe was a bad twrp backup cannot know for sure)

 

[jedld]

wow! Thanks jedid!

EDIT 2 amazing...wifi, cellular data for internet, sms, mms, calls all work (and no echo!)

as you wrote...mms (data) and internet (data) work after the 1st reboot

not yet installed gapps

slower than cm13 but an incredible start! (compare with tab s, s2 that even have official marshmallow and even nougat coming or already there for the tab s2 that have all call and data issues...this one is simply a great feat!)

only thing for some reason it will not automatically get the time and day from the cellular network

EDIT 3

a TWRP backup would not restore properly-android.phone.com errors (no root no gapps just basic setup)

strange thing when I flashed gapps (full not pico from Oct for 7.1) had all kinds of google apps force-closes and the network would not connect easily-it did but the errors never ended so I ended up trying to go back to the twrp backup which is when I got the android. phone.com stopped error (repeatedly coming)

am redoing the installation now (maybe was a bad twrp backup cannot know for sure)

Also happened to me. What I did was to rewipe after Gapps and it worked OK after that. Also set GPS to power saving

 

[mac231us]

issues just reporting...updates

by rewipe do you mean wipe dalvik and cache? thx

edit

for time i just unchecked the auto time zone and manually selected my time zone...the time and day are now correct (but it is an issue..understand way early)


few things

the file manager seems to be missing the root option in general settings and prompts to add root permissions when the option does not show up (maybe because it has no CM root? and that an SU root is secondary? even if cm root is not set?)

the clock has the similar type of error as in cm13 (extreme only?)..try setting up alarm and it freezes when tapping OK to set alarm and then reboots (bootloops just as getting to android is starting message) (need to delete clock data in twrp)

no speakerphone but that has been absent anyway in cm13 and omni as well and the previous cm14

also problem connecting to the computer choosing mtp protocol the usb debugging and the connection option notifications vanish (even if set to always show) (think it does not do anything and remains in charge mode) through dev menu in settings it appears picture transfer may be set

the above are minor irritants given all the other things that are working! thanks

EDIT3

gapps 7.1 pico 20161024 worked no need for dalvik and cache wipe

 

[Kevinkuensken]

Hello
Can you fix GPS? The Rom is nice but i really Hard ned GPS. Or give IT nö Chance to fix GPS?

 

[jedld]

Hello
Can you fix GPS? The Rom is nice but i really Hard ned GPS. Or give IT nö Chance to fix GPS?

I see a path forward to fix it, but it will require more time to do so.

 

[jedld]

by rewipe do you mean wipe dalvik and cache? thx

I did a full data wipe after gapps, then it worked. Flashing gapps after going through a first boot seems to cause problems.

 

[Kevinkuensken]

@jedid
Ok i hope IT give a fix for GPS. Then ist Use it as Daily.

 

[mac231us]

I did a full data wipe after gapps, then it worked. Flashing gapps after going through a first boot seems to cause problems.

the gapps 7.1 pico 20161024 worked without any dalvik wipe (not sure what happened earlier but suspect it was because i used a full stock although of the recommended timeframe of oct 2016 (7.1 only goes back to that month anyway)

Used it the whole day..calls text mms browsing

root explorer would not work (blank screen upon opening)-am using Fx explorer (root which does a great job anyway especially if pasting entire folders into system app/priv-app folders-sets the permissions automatically and correctly)

camera does not work known anyway (was not coming up on 2nd/3rd try)

lte signal similar to cm13 (omni is still fastest to get on and stick)

but at times happened at least 5 times and in static position that the internet signal would drop and then come back (so somewhat finicky there)

lag is there when opening certain apps-just sits there

happens at times when pressing ok button in say some app where you have to accept or reject

but alpha...known and/or expected

don't about bluetooth headset, netflix, audio sophisticated stuff..not into these/kept up with the times

youtube works no issues

odd thing if some app or function fails for some reason it says browser stopped...will have to note down which ones gave that error that had nothing to do with the internet browser (opera beta that I use works no issues as does the built-in browser...unless the data signal drops for some reason-then have to turn off and on the data/or even toggle airplane mode to restart the radio)

 

[acornkenya]

Just like your other alpha builds, this is really good; great work! Subjectively, the ROM feels quite fast.

The bugs I noticed were:
1. MTP is not working for me
2. Scrolling was smooth, but slow, and eventually got jerky over time
3. The tablet can be detected by other devices when Bluetooth is on, but it cannot receive any files
4. For some reason, CM Transfer - I did not test other apps that use the same approach to transfer files - is not working

---------- Post added at 12:23 PM ---------- Previous post was at 12:17 PM ----------

Was this device made with Android 7.1 in mind? Some time last year, when I was trying to install a ROM using Flashfire, I noticed that this device seems to have two data partitions. After installing this ROM, the tablet reported that the total 'shared' internal memory was around 8GB, rather than the usual five-or-so gigabytes. I was very surprised

 

[jedld]

Just like your other alpha builds, this is really good; great work! Subjectively, the ROM feels quite fast.

The bugs I noticed were:
1. MTP is not working for me
2. Scrolling was smooth, but slow, and eventually got jerky over time
3. The tablet can be detected by other devices when Bluetooth is on, but it cannot receive any files
4. For some reason, CM Transfer - I did not test other apps that use the same approach to transfer files - is not working

Didn't notice MTP wasn't working will take a look at it.
As for bluetooth it is still essentially broken in this build.

---------- Post added at 12:23 PM ---------- Previous post was at 12:17 PM ----------

Was this device made with Android 7.1 in mind? Some time last year, when I was trying to install a ROM using Flashfire, I noticed that this device seems to have two data partitions. After installing this ROM, the tablet reported that the total 'shared' internal memory was around 8GB, rather than the usual five-or-so gigabytes. I was very surprised

There are changes to how /data is structured but it is still one partition from what I know. It is still a mystery to me how it computes storage especially if you set your external sd card as adoptable, it could probably combine the size of both system and data in that report.

 

[mac231us]

Didn't notice MTP wasn't working will take a look at it.
As for bluetooth it is still essentially broken in this build.



There are changes to how /data is structured but it is still one partition from what I know. It is still a mystery to me how it computes storage especially if you set your external sd card as adoptable, it could probably combine the size of both system and data in that report.

.now on a 2nd installation..TWRP backup restore runs into issues (twice now) (only on lineage not cm14.1/13.1/omni) get android.phone stopped issue.

mtp issues..yes in #4 "also problem connecting to the computer choosing mtp protocol the usb debugging and the connection option notifications vanish (even if set to always show) (think it does not do anything and remains in charge mode) through dev menu in settings it appears picture transfer may be set"

it shows up for selection but does not work (sits in charge mode)...I think the picture transfer appears to get set...will check again and try to restore the backup without data

 

[mac231us]

Just like your other alpha builds, this is really good; great work! Subjectively, the ROM feels quite fast.

The bugs I noticed were:
1. MTP is not working for me
2. Scrolling was smooth, but slow, and eventually got jerky over time
3. The tablet can be detected by other devices when Bluetooth is on, but it cannot receive any files
4. For some reason, CM Transfer - I did not test other apps that use the same approach to transfer files - is not working

---------- Post added at 12:23 PM ---------- Previous post was at 12:17 PM ----------

Was this device made with Android 7.1 in mind? Some time last year, when I was trying to install a ROM using Flashfire, I noticed that this device seems to have two data partitions. After installing this ROM, the tablet reported that the total 'shared' internal memory was around 8GB, rather than the usual five-or-so gigabytes. I was very surprised

anyone here having issues restoring from twrp backup (tried 3 times now each time it fails with looping android.phone crashes-muting the app then toggling airplane mode to restart the radio does not work) basically have to set it up and use it (the rom) but cannot try anything else (or have a backup that can be used in case things go wrong)...ran into the same clock issue as on cm13 (extreme only?) ...could not get out of the rebooting loop (tried deleting data for the desk clock) and then twrp backup would not work either

thanks

edit

I am able to restore without data (so have to set up again including supersu but at least it avoids the odin flashing part)

 

[jedld]

Seems the alarm clock issue happens on all LineageOS roms and not just mine. Their advice is to just get another app from the app store while they are fixing it.

 

[Jaytn]

Hi, thanks for continuing to work on this device.
Sadly, I have (or rather my granny does) a SM-T280... In the last thread there was someone who wanted to try to port to the T280, is there still work going on?
Also can I help? I am not really a developer, but a tinkerer; and I am fed up enough by the Samsung nonsense to try and help (as long as I can be reasonably certain to be able to restore the tablet to a working state even if I mess up, it's not mine after all^^)

 

[TrapCard]

SM-T285

:crying:
Just bought SM-T285 yesterday.

Last night I look in youtube on how to root my Samsung Tab A 7.0.
Me, as the stupid human followed the tutorial installing the img then poof! BOOTLOOP.
(looking for stock rom to flash it tru Odin)

Newbie here guys!
I know you can find ways to fix it.
We can wait..

 

[paulo boë]

Hello, can you port this for the T580? I kinda really hate CrapWiz

 

[mac231us]

:crying:
Just bought SM-T285 yesterday.

Last night I look in youtube on how to root my Samsung Tab A 7.0.
Me, as the stupid human followed the tutorial installing the img then poof! BOOTLOOP.
(looking for stock rom to flash it tru Odin)

Newbie here guys!
I know you can find ways to fix it.
We can wait..

Search on the internet.. Several sites updato (very fast), Sammobile.com, Samsung-updates.com

Sent from my SM-T285 using XDA Free mobile app

 

[jedld]

build 02112017 LineageOS 7.1.1 just released. Hop over to the OP or Downloads section. Enjoy!

 

[mac231us]

couple of issues?

build 02112017 LineageOS 7.1.1 just released. Hop over to the OP or Downloads section. Enjoy!

Awesome!

Sent from my SM-T285 using XDA Free mobile app

edit

sorry if not valid here..

jedid, it seems the ftp issue is still there? as before checking or selecting the ftp option simply removes the toggle from the notification (does not show up until next reboot) and does not connect the drives to the computer

also not sure if you were looking at this issue but need to manually select the network time zone (does not automatically detect)

automatic takes it to GMT