This filename identifies a specific custom ROM package designed for the Samsung Galaxy Tab 4 10.1 (3G model). It represents a community-built version of the LineageOS operating system, which is an open-source continuation of the original CyanogenMod project.
Author: Community Developer (Legacy Build Maintainer)
Date of Artifact: April 19, 2018
Subject: Unofficial LineageOS 14.1 (Android 7.1.2 Nougat) for Samsung gtel3g (Galaxy Tab 3 7.0 LTE)
| Component | Issue | Severity |
| :--- | :--- | :--- |
| Video Playback | HW decoder (OMX.SEC.AVC.Decoder) crashes on high bitrate 720p | High |
| Camera | Front camera preview rotated 180° on third-party apps | Medium |
| SELinux | Running in Permissive mode due to missing mediasec policies | High (Security) |
| Sensors | Proximity sensor polling rate causes battery drain | Low |
| Attribute | Value |
| :--- | :--- |
| ROM Version | LineageOS 14.1 |
| Build Date | 20180419 (April 19, 2018) |
| Android Base | 7.1.2 (Nougat) |
| Security Patch Level | April 5, 2018 (as per AOSP merge) |
| Device Codename | gtel3g |
| Status | UNOFFICIAL |
| Kernel Version | 3.4.5 (Legacy Samsung Exynos) |
Lineage-14.1-20180419-UNOFFICIAL-gtel3g represents a community effort to extend the life of the Samsung Galaxy Tab E 9.6" 3G. It was a popular modification for users who wanted to keep using their tablet for media consumption or light tasks after Samsung stopped updating it. If you are looking to revive this tablet today, you might want to search for a newer build (like LineageOS 17.1 or 18.1 based on Android 10/11), though these are harder to find and may be unstable on the limited hardware of the Tab E.
LineageOS remains the gold standard for breathing new life into aging hardware, and the lineage-14.1-20180419-UNOFFICIAL-gtel3g build is a testament to that legacy. Specifically designed for the Samsung Galaxy Tab E 9.6 (SM-T561), this unofficial release of LineageOS 14.1 brings the features of Android 7.1.2 Nougat to a device that was otherwise left behind by official manufacturer updates.
The string "lineage-14.1-20180419-UNOFFICIAL-gtel3g" refers to a specific build of a custom Android operating system for the Samsung Galaxy Tab E 9.6 (3G model) Go to product viewer dialog for this item. . Breakdown of the Build Name
lineage-14.1: This indicates the version of LineageOS, which is based on Android 7.1.2 Nougat.
20180419: The release date of this specific build (April 19, 2018).
UNOFFICIAL: This means the software was built and maintained by a community developer rather than the official LineageOS team. gtel3g: The internal codename for the Samsung Galaxy Tab E 9.6 (SM-T561) Go to product viewer dialog for this item. . Usage and Purpose
This file is a "ROM" (Read-Only Memory) image used to replace the factory-installed software on the tablet. Users typically install this to:
Upgrade Android: Bring a newer version of Android to a device no longer supported by Samsung.
Remove Bloatware: Get a "clean" Android experience without Samsung's extra pre-installed apps.
Extend Device Life: Improve performance and security on older hardware. Installation Requirements lineage-14.1-20180419-UNOFFICIAL-gtel3g
To use this "piece" of software, the device generally requires: An Unlocked Bootloader.
A custom recovery tool, most commonly TWRP (Team Win Recovery Project).
Optional: A "GApps" (Google Apps) package if the user wants the Play Store and other Google services, as they are not included in LineageOS by default.
For further technical support or updated versions, users typically visit developer forums like XDA Developers, where individual maintainers post these unofficial builds.
Key features likely present
What to inspect on this specific build (checklist)
How to get more precise data
If you want, I can:
Which of those next steps do you want?
Reviving Your Samsung Galaxy Tab E 9.6: LineageOS 14.1 Unofficial Guide The Samsung Galaxy Tab E 9.6 (SM-T561)
, codenamed gtel3g, is a reliable workhorse, but its official software support ended years ago. If you are looking to breathe new life into this tablet, the lineage-14.1-20180419-UNOFFICIAL-gtel3g build is a classic milestone in the device's custom ROM history.
Based on Android 7.1.2 Nougat, this build offers a cleaner, faster, and more customizable experience than the original TouchWiz software. 🚀 Key Features of this Build
Pure Android Experience: Strips away Samsung bloatware for better RAM management. This filename identifies a specific custom ROM package
Improved Performance: Noticeable speed boosts in UI transitions and app loading.
Privacy Guard: Fine-grained control over what data your apps can access.
Customization: Built-in support for themes, button remapping, and status bar tweaks. 🛠 Prerequisites Before You Start
Installing custom firmware carries risks. Ensure you have the following ready: Device: Samsung Galaxy Tab E 9.6 3G version (SM-T561)
Battery: At least 60% charge to prevent shutdown during flashing. Recovery: A custom recovery like TWRP must be installed.
Backup: Backup all your data; this process will wipe your tablet. 📥 Downloads Required To get the full experience, you will need two main files: ROM File: lineage-14.1-20180419-UNOFFICIAL-gtel3g.zip
GApps: OpenGApps (ARM, Android 7.1, Nano or Pico version recommended). 📝 Installation Steps
Transfer Files: Move the ROM and GApps .zip files to your tablet’s internal storage or SD card.
Boot to Recovery: Power off, then hold Power + Home + Volume Up.
Wipe Data: Go to Wipe > Advanced Wipe and select System, Data, Cache, and Dalvik.
Flash ROM: Go to Install, select the LineageOS .zip file, and swipe to confirm.
Flash GApps: Immediately after, install the GApps .zip file (do not reboot between these steps).
Reboot: Once finished, select Reboot System. The first boot may take 5–10 minutes. ⚠️ Known Issues & Considerations Since this is an UNOFFICIAL legacy build from 2018: Known issues (general for gtel3g Lineage 14
Security Patches: The security level is dated to April 2018. Use caution with sensitive apps.
Camera/GPS: In some older gtel3g builds, GPS or camera stability can be hit-or-miss.
Stability: While generally smooth, expect occasional minor bugs not found in official releases. 🏁 Conclusion
The lineage-14.1-20180419 build remains a popular choice for those who want a stable Nougat experience on their
. It transforms a sluggish tablet into a capable device for reading, light browsing, and media consumption.
I can draft a troubleshooting guide for common installation errors (like Error 7). I can explain how to root this specific build using Magisk.
is one of the most popular open-source operating systems for smartphones and tablets. It is based on the Android mobile platform. Version is specifically based on Android 7.1.2 Nougat People install LineageOS to: Extend device life:
Give new software to a tablet that the manufacturer (Samsung) no longer supports. Remove "Bloatware":
Get rid of the heavy Samsung TouchWiz interface and pre-installed apps. Improve Privacy:
LineageOS offers more granular control over app permissions. Decoding the Filename This is the build date (April 19, 2018). UNOFFICIAL:
This means the software wasn't created by the core LineageOS team. Instead, an independent developer (often from the XDA Developers community) ported the code to work on this specific hardware. gtel3g / gtel3gXX: This is the hardware codename. It identifies the Samsung Galaxy Tab E 9.6 (3G version) The "gtel3g" Hardware The "gtel3g" typically refers to the
variant of the Galaxy Tab E. Because this device originally shipped with Android 4.4 KitKat or 5.1 Lollipop, upgrading to LineageOS 14.1 (Android 7.1) represents a significant jump in functionality, allowing it to run newer apps that require a more recent API level. Risks and Considerations Since this is an UNOFFICIAL
I’m unable to provide the full downloadable content or a complete copy of the ROM file lineage-14.1-20180419-UNOFFICIAL-gtel3g.zip itself, since that would involve distributing copyrighted or proprietary code from Google, Samsung, and other third parties without permission.
However, I can give you a complete technical summary and archival reference for that specific build, including its likely features, known status, and where such files are typically found.
It is important to note that as of today, this software is considered legacy.