yashsingh1/xdaforums huggingface dataset:
[Galaxy Tab 4 Android Development] SteinbeckFan:
The problem and solution is the control channel in the 5GHz wireless setting in your router. If you have it set to auto or manual and a triple digit control channel is assigned, you won't be able to connect. Set the control channel to a double digit lower value like 36. That will fix your problem. It is possible that some of your other 5GHz devices won't like the change, but it hasn't been my experience.

From the changelog_known_issues.txt: "5 GHz WiFi networks between channels 149 and 161 are invisible to the Tab"
[Galaxy Tab 4 Android Development] klingklang01:
Weird.... Then it is a problem with the roms. All my other electronics works flawlessly. If I flashback the stock SM-T330nu rom then the 5Ghz works perfect either. After TWRP reinstall and DrDRoid or Cypher, then I loose the 5Ghz. Logically, I don't want to play with setup that can create glitches to all others because of a non genuine rom. There must be another workaround....
[Galaxy Tab 4 Android Development] klingklang01:
UPDATE ON 5GHZ:

here what I found:. The 5G band in is fact, spitted in 4 ranges and these ranges are dependent to channels. As for the higher range, it use channel 141 and over. For some reasons (FCC norms) the higher range is prohibited in some country. list here . That is why some of you have the 5ghz working and some not...or have to adjust their router to a lower channel...that is also at lower speed.

question????

-config file with the region? probably something with the wpa_supplicant.conf. Working on it.

- is possible to flash the modem only from Jazz lollipop (working) or stock rom in this version. with Odin maybe?

-is is possible to find a modem patch compatible with this rom from a country that allow all the ranges?

thank you
[Galaxy Tab 4 Android Development] SteinbeckFan:
According to my research on 5GHz, transfer speed is dependent on Channel Bandwidth, not the channel. On my Asus router, the channel bandwidth setting is set to 20/40/80 and the channel is set to 36. I really don't think you have anything to worry about by selecting a lower channel. You will still see whatever maximum data transfer is available for your 5GHz devices.

Guide to Configure Wi-Fi Channels and Channel Widths to Improve...

How to configure Wi-Fi channels and channel widths

www.intel.com
[Galaxy Tab 4 Android Development] klingklang01:
Look I manage to get it to work. I'll test a bit and I'll post how to do it.....if anybody interested
[Galaxy Tab 4 Android Development] crazydrive22:
New Updates are online

Changelog:

-updated to Version 7.34

-synced with LOS-Source

-Security Patch 2023-09-05
[Galaxy Tab 4 Android Development] SuperUser008:
Where can the updates be found?
[Galaxy Tab 4 Android Development] crazydrive22:
They're linked in the first post.

Androidfilehost is no longer in use but Mega and Github are working well.
[Galaxy Tab 4 Android Development] VinceWe:
Hey I'm trying to flash this ROM to a stock Matisse3g but I'm stuck on the Samsung Galaxy Tab4 logo. Anyone had the same issue or nows a fix?
[Galaxy Tab 4 Android Development] TomL2:
No issues installing matissewifi on several different machines. Have you swiped up/down? Is there a hidden "next" button from your screen?
[Galaxy Tab 4 Android Development] crazydrive22:
Probably your bootloader is wrong. Did you come from stock 4.x? If yes, flash stock 5.0 via Odin to update your bootloader. After that flash TWRP and ROM as you did before.
[Galaxy Tab 4 Android Development] crazydrive22:
New Updates are online

Changelog:

-updated to Version 7.35

-synced with LOS-Source

-Security Patch 2023-10-05
[Galaxy Tab 4 Android Development] matteo2:
hi @crazydrive22, I have just installed 7.35 from stock 5.0.2 with success. How can I have high icons? I tried with lower dpi in display settings, but also if icons are setted as 150% from the home screen they are very small. How can I have bigger icons and text? Thanks for this fantastic rom. It's awesome have it on a 2014 device...
[Galaxy Tab 4 Android Development] crazydrive22:
Hi.

Check Settings for something like "screen grid". The less symbols you are setting there the bigger they appear. Here's a short video for Android Stock but it should also work for crDroid. If not, try a different Launcher like Nova Launcher. The size of the Text can be edited with "Font size" in the Settings.
[Galaxy Tab 4 Android Development] Matthewsuch:
I have downloaded it for my sm-t530 and it was stuck on crdroid logo for hours. i tried reflashing but still nothing happened yet it's still the same. Please help me
[Galaxy Tab 4 Android Development] TomL2:
You may have to scroll the screen or part of it to see the "begin" or "next" or whatever button. I think its hidden in landscape mode.
[Galaxy Tab 4 Android Development] Matthewsuch:
I'll try
[Galaxy Tab 4 Android Development] Matthewsuch:
Around 15 minutes of swiping down, swiping up, all i see is the crdroid logo changing colors. Do anyone knows how to fix that? I'm completely stuck on the logo
[Galaxy Tab 4 Android Development] crazydrive22:
Did you come from Stock 4.x? If yes, you need to flash Stock 5.x first to update your Bootloader. After this you can start over with TWRP and ROM.
[Galaxy Tab 4 Android Development] Matthewsuch:
Nevermind, after flashing gapps it somehow started to work. also i forgot to wipe data and internal storage partitions too. after doing all of that, reflashing the crdroid, it was done. but it had a lot of bugs and eats a lot of battery. also no, i came from 5.x to lineageos to this. you may ask how does this rom eats battery it is because my tablet's battery is bad and since i've heard crdroid based on lineage os i thought it will not waste energy, it did. well i want things bare minimum and useful to watch things in it, i'd prefer lineageos. well if my battery was good enough i'll probably use this. thanks anyway, goodbye!
[Galaxy Tab 4 Android Development] TomL2:
If you want lengthen your battery life you might want to look into Hibernation Manager. I've found it quite useful.
[Galaxy Tab 4 Android Development] zulfikar313:
Is this working for Sm-t230 ?

And what Android version it has?

Anyways I searched too much for a custom rom for sm-t230 with an updated Android version, I don't need to flash a new rom just for fun, I just need to make it useful again..

If you can guide me for the best rom I am searching for I would appreciate that 🙏

Thanks!
[Galaxy Tab 4 Android Development] crazydrive22:
Unfortunately not. Your Device is using a SoC from Marvel, what is not supported from our ROMs (SoC from Qualcomm). The 7" Tablet was also not that common, so there are only a few and older ROMs. Check this out, maybe you'll find something for your Device.

sm-t 230 XDA
[Galaxy Tab 4 Android Development] zulfikar313:
Thanks, I did my research and didn't find any results..

Dead device :⁠-⁠|
[Galaxy Tab 4 Android Development] crazydrive22:
New Updates are online

Changelog:

-updated to Version 7.36

-synced with LOS-Source

-Security Patch 2023-11-05
[Galaxy Tab 4 Android Development] KORKKOKO:
I am using the Korean LGU+ SM-T335L model.

I am very satisfied with the firmware.

No Korean SIM

WIFI not available

Is there no way?

Korea (KT, SK, LGU+) SIM card recognition is required. It doesn't work.

Is there no way?

I look forward to your abilities.
[Galaxy Tab 4 Android Development] crazydrive22:
Normally it should work. To find out if the ROM is the Problem please install LOS 18 from Matteo to check. If it's also not working there's probably an issue with your Device (broken Partition) or your Device is using a Modem what is not supported from the Kernel.

[ROM][UNOFFICIAL][matisse][millet] LineageOS 18.1

LineageOS is a free, community built, aftermarket firmware distribution of Android 11, which is designed to increase performance and reliability over stock Android for your device. LineageOS is based on the Android Open Source Project with extra...

xdaforums.com
[Galaxy Tab 4 Android Development] KORKKOKO:
crDroid is a LineageOS-based CustomRom.

This one is based on LOS 18.1.

Completed installation of the latest version

Booting is normal.

The overseas model name is confirmed as SM-T335 model, and the Korean model is confirmed as SM-T335L (LGU+) model.

SIM cards cannot be used on Korean models.

And WIFI can be connected to search, but cannot actually be used.

We really need a patch that can be used on Korean models as well.

Please help so that the Korean model can also be used normally.

LineageOS 18 ROM allows WIFI connection and data, but

Korean SIM (KT SK LGU+) cards cannot be used in the same way.

I tried uploading all the current ROM firmware, but I can't use it.

Must use for business purposes

Please help. I understand that there are differences in device specifications between the Korean model and the overseas model, and I desperately need help from the developer!
[Galaxy Tab 4 Android Development] crazydrive22:
Alright. I talked to @matteo0026 , who is building LOS and is also the owner of the device tree. He will try to implement your device-modem to the kernel but there's no guarantee this will work.
[Galaxy Tab 4 Android Development] KORKKOKO:
Thank you so much

Looking forward to good results

Please, I hope the SM-T335L model works normally.

I'm rooting for you, the developer, too! Fighting!

God bless you
[Galaxy Tab 4 Android Development] matteo0026:
Hi, I'll try to look in the next weeks at it. But I don't give any guarantee that I'll be able to fix it. Of course, you can't pretend to have a fully working custom ROM. It's always an unofficial and homemade job. And we are working with a very old tablet, which it shouldn't neither be used for business purposes actually.
[Galaxy Tab 4 Android Development] KORKKOKO:
thank you

Although it is for work purposes, it is necessary because the Android version is too low.

Looking forward to your assistance.

God give you wisdom
[Galaxy Tab 4 Android Development] crazydrive22:
New Updates are online

Changelog:

-updated to Version 7.37

-synced with LOS-Source

-Security Patch 2023-12-05
[Galaxy Tab 4 Android Development] SuperUser008:
7.35 is the latest release on GitHub. Latest release from yesterday is CipherOS.

Not published yet?
[Galaxy Tab 4 Android Development] crazydrive22:
Ah, heck. Publishing didn't work. Have to re-upload it. Please dl it from MEGA for now.
[Galaxy Tab 4 Android Development] crazydrive22:
Re-upload is done, latest crDroid is available at Github.
[Galaxy Tab 4 Android Development] pokadan:
Hi, thank you for the ROM!

It is great to have an old tablet breathe again.

I have this weird problem , it happened in version 7.36 but also 7.37.

Basically Brave browser, Google Chrome and Gmail don't work properly. The apps start up but after that they stall. Browsers never load up the page and Gmail never loads message. I will post a picture so you understand more clearly
[Galaxy Tab 4 Android Development] pokadan:
Message never loads
[Galaxy Tab 4 Android Development] pokadan:
It is not connection problem. Firefox works OK everytime
[Galaxy Tab 4 Android Development] pokadan:
Its like HTML rendering is broken but only brave, chrome and gmail
[Galaxy Tab 4 Android Development] crazydrive22:
Probably Google did some changes in these Apps. Chrome and Chrome based Browsers are always using a lot of RAM and our old Tablets are clearly not RAM Monsters. You could try to use a different Browser and an Email-App like Bluemail. Or, if you want to stay at Google Products, use a different ROM like CipherOS 11 or LineageOS 18. crDroid is a nice ROM with a lot of Gimmicks but they're also making the ROM slow. Cipher and Lineage are more lean and have a better Performance.
[Galaxy Tab 4 Android Development] pokadan:
Thank you, never heard of Blue mail, will try it out
[Galaxy Tab 4 Android Development] KORKKOKO:
@

How was the firmware work for the KOREA model SM-T335L that I inquired about last time?

Sorry, but I'm curious.

I am waiting for a response from the developer.
[Galaxy Tab 4 Android Development] crazydrive22:
New Updates are online

Changelog:

-updated to Version 7.38

-synced with LOS-Source

-Security Patch 2024-01-05
[Galaxy Tab 4 Android Development] crazydrive22:
New Updates are online

Changelog:

-updated to Version 7.39

-synced with LOS-Source

-Security Patch 2024-02-05
[Galaxy Tab 4 Android Development] crazydrive22:
LineageOS 18.1 is EoL now. That means, there will be no more Security Patches for the future. The latest Updated contains some minor changes under the hood, Security Patch will stay at 2024-02-05 and the crDroid-Version at 7.39. I'll do updates for the future but probably not every month. I'll announce it here and in the Telegram-Group.
[Galaxy Tab 4 Android Development] thanhtran2401:
Hello. i want to ask if the sim works on millet t331 device?
[Galaxy Tab 4 Android Development] zzjuzhz:
hello, is my sm-t231 (7.0) supported on the "millet (8.0)" os?
[Galaxy Tab 4 Android Development] crazydrive22:
Unfortunately no. SM-T 231 ist a 7" 3G Device with Marvell-Chipset. We only support 8" and 10.1" with Snapdragon Chipset. There are only few ROMs for 7" Devices and they're all very old bc of that restrictive Marvell-Chipset.
[Galaxy Tab 4 Android Development] zzjuzhz:
thanks for that info man, do you know any lastest os that is supported from the "7 3g?
[Galaxy Tab 4 Android Development] crazydrive22:
Probably this one. But be aware that the Security Patch from this ROM is also extremely old.

[ROM][STABLE] Pixelized OS v2.9 [SM-T231/T230/T230NU][2018-08-16]

PIXELIZED OS Hey guys it's enzo2001 here, introducing you Pixelized OS. My aim on this ROM is to make the tab 4 smooth, up to date and with Pixel look and Android P which is latest android version. I make Pixelized OS for 3 devices which is...

xdaforums.com

If you want to use your Tablet as a daily driver, i'd think about to buy a new one. TAB4 will be good as an offline device for e.g. Music or Navigation.
[Galaxy Tab 4 Android Development] zzjuzhz:
I'm fine with the security patch but it's basically like KitKat but lighter, updated and new-themed? I'm just using it for watching Netflix or YT
[Galaxy Tab 4 Android Development] crazydrive22:
New Updates are online

Changelog:

-ROM stays at Version 7.39

-synced with LOS-Source

-Security Patch 2024-05-05
[Galaxy Tab 4 Android Development] crazydrive22:
128 GB? How is that possible?

It should allow a max of 64 GB.

Need to test that.
[Galaxy Tab 4 Android Development] ercanziyanak:
crazydrive22​

matteo0026You are not interested in the root part, I know, but I wanted to ask. I could not solve this problem at all. How to overcome the Magisk safety problem, I watched many videos, but it is constantly red.​
[Galaxy Tab 4 Android Development] matteo0026:
There are some modules to fix SafetyNet. By the way, in android 9 and 10 it's fine by default. I don't know why it doesn't pass in 11.
[Galaxy Tab 4 Android Development] crazydrive22:
It's also fine, but only with Magisk 23 and updated Magisk App.

If this is not working, there's a Modul to change your Device Fingerprint.
[Galaxy Tab 4 Android Development] d_a_ugono:
Can I dirty upgrade from crDroid 6.16 to crDroid 7.7, or is a full wipe required? I have SM-T530.
[Galaxy Tab 4 Android Development] crazydrive22:
If you change the Version, a wipe is necessary.
[Galaxy Tab 4 Android Development] double b26:
Been using the rom for about a week or so. Very usuable, but ive caught a couple minor issues that i wanted to report back with

1. Occassionally doesnt recognize the sd card after boot. Its formatted as internal storage extension. Formatted clean by the tab when inserted. Older 128gb team extreme card, which has always performed well in ither devices, however, the OS notified me that it may be 'too slow'. Have noticed *possible* coorelation with charger being connected on boot. The 'no card' notice says to reinsert the card, which ive tried, but it never recognizes the card unless its detected on boot.

2. Brave browser causes odd display issue when opening a page in new tab. The address bar duplicates itself down the entire screen until the page begins to actually load (im on a sloowww hughesnet connection, so takes a second or two to start loading page). Browser functions fine other than that, and it hasnt crashed. Brave also gives an occasional nitice that it cannot function without google play services, which is not installed, however, thus far, the browser seems to function normally, other than syncing bookmarks.

3. One time only, during boot, the screen blacked out on the boot image, and would show one frame each time i turned the screen back on. Eventually it resolved itself, but was odd.

4. ProtonVPN cannot automatically connect after boot. Gives notice in shade saying always-on vpn disconnected, and connects just fine manually. But never connects automatically on boot as it should (proton vpn app works fine on other devices, btw)

5. Battery life is great. I believe this old tablet has a weak battery, or needs some calibration, possibly. None the less, the tab battery plunges rapidly below 50%, and very quickly below around 20%. On the full side, battery life seems very good, esp when device is not in use. As stated, i feel the battery issue is hardware, not this software.

Anyway, i thinks thats about it. Nothing major, and the tab is very stable and functional, but wanted to let you know my experience.
[Galaxy Tab 4 Android Development] IamTheBRAVE:
Same here. I thought i was the only one since nobody mentioned this before anywhere. It's been happening on my T531 since the early custom rom days (android 7 and up) it's not specific to this rom.

Battery holds up fine above 50% (2h50 on average) but below that it melts in minutes. I always suspected wrong battery calibration because it would sometimes reboot randomly and show close to 100% or the opposite: charge the whole battery capacity (4500mah) in 2%.

This rom behaves much better than the other roms i tried before (all versions of lineageos and crdroid) and holy cow android 11? That's the cherry on top!

Thank you @crazydrive22 for your work (and @matteo0026 too)
[Galaxy Tab 4 Android Development] matteo0026:
1-2. I don't think that can be fixable, just think that we use old blobs and kernel sources. It's normal that you can find some little issues in the usage. And if it's fixable, it's out of my knowledges. About 2, try to use another browser, like bromite or firefox.

3. Probably it would have been a device slowiness that showed you a black screen before loading the other system parts. Don't worry about that.

4. Did you confirm the behaviour on other devices with Android 11 or in other ROMs with a different Android version in the Tab 4?

5. I'm not able to test that well battery, since I'm almost just using it to develop on it, but by using it with a quite new battery, the battery life is awesome, in my opinion, and it goes down in a good way.
[Galaxy Tab 4 Android Development] d_a_ugono:
I installed BitGapps but Google Play Services and Google Play Store didn't install for some reason. Now I can't use Google apps that rely on Google Play Services.
[Galaxy Tab 4 Android Development] crazydrive22:
Use the Open Gapps I linked in the first Post. They're working very well.
[Galaxy Tab 4 Android Development] d_a_ugono:
It's in beta for Android 11, and they haven't been updated for over 5 months. I heard that only pico and nano work well. I normally use aroma.
[Galaxy Tab 4 Android Development] crazydrive22:
I'm using micro without any problem.

You can flash them and update later via Playstore.

NikGapps and MindtheGapps could also have builds for 11 but I'm not sure.
[Galaxy Tab 4 Android Development] matteo0026:
NikGapps only arm64, so they aren't usable in our tab
[Galaxy Tab 4 Android Development] Mitsuha Kitsune:
On first place, I should say big thanks to anyone involved on crdroid and the port to Galaxy Tab 4, it give a second live to my tablet and run very well.

Well, there it's my feedback.

On general, all it's working fine, very smooth (better than stock) and didn't see any notable error.

I should reflash some tryes, because I got a "no enought space error", the tablet have all memory available and sd card on shared storage setup, but seems that can't write any changes to emmc, this not ocurrs at the first launch moment, seems involved with some background setup or some google update.

The logcat spam this line whole time when this error ocurrs and act like a "read only" data partition:

RestoreRootTask: Failed to find root...

Tryed restoring system to defaults, not work and first run assistant enter in loop (maybe caused because can't write changes to data partition).

Tryed reinstalling the rom, worked for a few minutes and can complete the first setup, but when tablet start to install and update google things on background, enter again in this "read only" mode.

Googling this error, I see that it's known on lineage builds, I try to change format of data partition from fat32 to f2fs with the recovery and the tablet seems working fine now.

Another error that I see, it's that SD card have some delay to get mounted on system startup and sometimes appear "not present" and I should reboot the tablet to get my shared space again.

And to finish, I have the same battery calibration error, when the battery touch the 20% on the android system, automatically power off and when I plug the charger the kernel report 0% of battery, didn't know if it's caused by the custom rom, because I didn't use this tablet for years and maybe the battery are on bad state.

For now are the only bugs that I notice, if ocurrs some more I post it here too to help with the testing.

Again a lot of thanks for this rom, I test crdroid port on the past but overheat and randomly reboot my tablet whole time and a lot of things didnt work, now all work fine and run very very smooth, I love it.
[Galaxy Tab 4 Android Development] crazydrive22:
There seems to be an issue with shared storage and/or sd-cards bigger than 64GB.

Did you try to make your sd-card as a standalone-storage with exfat?

The battery issue appears for me too. Maybe it depends on Battery Age or it's a Lineage issue.

I'm not sure about this. Matteos new Battery seems to work like a charme.

Try to calibrate your Battery with Tools like "Easy Battery Calibration". This needs root.
[Galaxy Tab 4 Android Development] matteo0026:
About battery, I need to use it more to confirm that mine works fine. I'll tell you more in the next days. I don't have that much time to use tab actually
[Galaxy Tab 4 Android Development] crazydrive22:
New Builds with July Security Patch are up.
[Galaxy Tab 4 Android Development] crazydrive22:
Heck me! Now crDroid updated to 7.8, after i am done with my monthly builds. :/

Well, i'll update my builds, too and give you a ping as soon as they're ready.
[Galaxy Tab 4 Android Development] IamTheBRAVE:
LOL thanks for your unwavering devotion😋
[Galaxy Tab 4 Android Development] crazydrive22:
Well, well, well!

Finally all new Builds are updated und uploaded.

There could be an error with casting to Chromecast.

If you have a Chromecast please try it and give me a short Feedback. Thx.

Changelog:

-July Security Patch

-updated to crDroid 7.8

-synced with LOS-Source

-some changes under the Hood by @matteo0026
[Galaxy Tab 4 Android Development] groulo:
I haven´t any plroblems with casting to Chromecast
[Galaxy Tab 4 Android Development] crazydrive22:
You have Matisse, right?

I think it could be an issue with my old Chromecast-Stick.
[Galaxy Tab 4 Android Development] crazydrive22:
Open Gapps are not longer BETA.

I've changed the link in the OP.

Choose ARM and 11. Best Packages are Pico or Nano (the smaller, the faster is the Device).
[Galaxy Tab 4 Android Development] d_a_ugono:
How stable is aroma?
[Galaxy Tab 4 Android Development] crazydrive22:
It's not available for 11 atm.
[Galaxy Tab 4 Android Development] d_a_ugono:
I know, how stable is the latest aroma beta?
[Galaxy Tab 4 Android Development] crazydrive22:
There is no Aroma, even not in BETA.

They had and have Pico and Nano only.

Maybe bigger Packages will come later.

Edit: MindtheGapps also have a Package for 11. Maybe this will suite better but i never tried.

Codefire - Downloading /jdcteam/javelinanddart/gapps/MindTheGapps-11.0.0-arm-20210412_124103.zip