yashsingh1/xdaforums huggingface dataset:
[Xiaomi Poco F1 Questions & Answers] Daruwalla:
Can be a possibility of not getting Carrier Aggregation (4g+ or 4G LTE CA) problem on custom roms? Do you see 4g+ on custom roms? I'm on custom rom and getting 70-80Mbps (7-8MB) download speed .

@Rowdyy Ronnie not sure if you thought OP meant 50-70MBPS or 50-70mbps but I'm easily getting above 70Mbps (7MBps+ download speed) on 4G in India with JIO. Probably poco is the only phone which gives me best 4g speed as compared to other phones I use. This is why my JIO number is always in Poco phone.
[Xiaomi Poco F1 Questions & Answers] Karibes:
No, I don't see any 4G+ or 4G LTE CA in any custom ROMs and it is same with MIUI because it also shows 4G, yet in MIUI I get far better download speed... I'm quite confused... Maybe (hopefully) will something change when we switch carrier, though I highly doubt it will change anything.
[Xiaomi Poco F1 Questions & Answers] Daruwalla:
Weird bug. Install this app and post LTE 4/2xCA screenshot. I doubt changing carrier would help.

https://play.google.com/store/apps/details?id=com.qtrun.QuickTest&hl=en_IN
[Xiaomi Poco F1 Questions & Answers] Karibes:
Okay, give me a moment.

Edit: which tab do you wish to know?

Edit1: http://prntscr.com/o3jo0c (I hope that's one you were looking for...)
[Xiaomi Poco F1 Questions & Answers] Mattewsb:
Brother, at the lineageOs is written that It enables a lot of new bands(LTE). Do you know if this is true ?
[Xiaomi Poco F1 Questions & Answers] indianets:
I was having this issue in mind to talk about and good to see I'm not alone. I have tried hell lot of ROM, Kernels and almost all beta vendors+firmware combinations sometimes on recommendations of others as well. For example people say all 9.4.* ven+fw are bad for LTE speed.

I would like to know if you have tried latest Stable ven+fw for your existing custom ROM, this would not always match MIUI LTE speed, but will be close enough. Try this - https://mirror.akhilnarang.me/MIUI/beryllium/beryllium-V10.3.5.0.PEJMIXM-9.0-vendor-firmware.zip - specifically and update with a test results.

Also, LTE Discovery (a root app from Play Store) helps knowing in what cell tower you are connected to and if the behavior of speed depends on that. The strength of signal and direction of cell tower are to be noted.
[Xiaomi Poco F1 Questions & Answers] Karibes:
I don't know if it is true, I'm not from USA, so I don't know whether unlocked bands work or not.

[MENTION=4267330]vijay-in[/MENTION] I have been using beryllium-9.6.3-9.0-vendor-firmware.zip. I also tried all different vendors, sadly no avail... I will try this vendor though I doubt it does any changes regarding LTE speed because LTE speed worked in MIUI regardless of vendor versions. Going to try that vendor you posted. And I'm using latest Havoc OS.

Edit: no changes. I'm using beryllium-V10.3.5.0.PEJMIXM-9.0-vendor-firmware.zip and nothing changed :(
[Xiaomi Poco F1 Questions & Answers] Daruwalla:
From the screenshot, the phone is connected to band 3/1800 Mhz frequency which offers less speeds. The values of RP/NR are also low which means you're in low coverage zone. In my country, this band max output speed is 18Mbps. I don't think you will get 50-70Mbps in this band anyway.

Here's an easier explanation of how this works:

Best coverage: Band 5 > Band 3 > Band 40.

Best speed: Band 40 > Band 3 > Band 5

Check atleast 1-2 times a day to see if it latches to B40 which would give you maximum speeds on LTE/4G. Every country has it's own bands so you have to check yourself which band your operator offers to you. The above example is from my country network operators.

In case you want to test why you get more speeds on miui, flash back miui and check which band the phone gets connected. There can be plenty of reasons for low speeds on custom roms, may be it's related to vendor, network issues, signal at that time, band connectivity etc. It's not easy to find out an answer as to why you get low speeds on custom roms but it's not like custom roms provide low speeds on lte, I'm getting same speeds on both custom and miui roms.
[Xiaomi Poco F1 Questions & Answers] Mattewsb:
There's some applications that allows you to check bands that you are able to connect like network signal guru, give it a try and let me know, please
[Xiaomi Poco F1 Questions & Answers] indianets:
I am using OxygenOS port from 6T beta, and the stable vendor has changed things regarding LTE certainly, I was getting maximum 10Mbit on Band40, but now it goes up to 30Mbit sometimes +.

I see you are in Band 3 (1800) coverage which has the worst bandwidth 5MHz instead of 20MHz (at some places 10MHz) of Band 40 (2300) and 10MHz of Band 5 (850). Ideally as mentioned in other comments, Band 3 should be faster than Band 5, but not in case of Jio at most places. The bandwidth is very less and Band 3 ensures you get pathetic speeds.

Try moving to the part of your house and find the spot where you get Band 40 (or Band 5) and try speedtest. I have identified some spots in my house where I get 30Mbit and when I have to download in GB, I get there and fire :D You can use LTE Discovery from Play Store as I mentioned in last post also.

Edit: No offence to anyone, but in my opinion locking band using Network Signal Guru may prove to be disastrous sometimes and you can be without network in some places when you need the most.
[Xiaomi Poco F1 Questions & Answers] Karibes:
Okay, I flashed to original MIUI and sure enough, it is way weird.... http://prntscr.com/o42grn Here is the link of speed using Opera with LTE and right picture is taken from Network Guru. I don't see difference at all except LTE speed.... I'm seriously baffled... I probably can live with 600KB/s download using custom rom. Way weird bug or my phone is haunted to the hell...

Edit: I took this screenshot on same spot while testing the speed. Here where I'm sitting right now, I get full LTE speed on MIUI, on other hand with custom ROM, I get mere 600KB/s...
[Xiaomi Poco F1 Questions & Answers] indianets:
That's weird for sure :confused: If this is same with all custom roms, there is something wrong with either all of them or the stock MIUI :p

You have 20MHz bandwidth in Band 3 which is different from what we have here, so my previous answer was incorrect. So, you have a strong and fast Band 3. Probably it is the best in your country and has nothing to do with difference in results.

I am sorry that there is nothing much one can suggest, though I sincerely hope someone would help you with this. One thing you can try is, flash many popular custom roms over weekends and see if anyone can come near that speed, difference of this fold is quite unbelievable.
[Xiaomi Poco F1 Questions & Answers] Karibes:
Do you think there is something in AOSP because all custom ROMs are based on AOSP and (just loud thinking) I assume devs didn't add any files in AOSP or something for Europe to boost LTE speed? Though I'm not really sure but I know that MIUI has something that gives a full LTE speed while custom ROMs "restricting" LTE speed because in all custom ROM, I get 500-600KB/s, no more, no less... :confused: I'm sadly not a programmer/coder so I cannot investigate it myself...
[Xiaomi Poco F1 Questions & Answers] indianets:
I see you have used multiple vendor+firmware beta/stable and have had same results, but I still think it is related to modem firmware, though I maybe absolutely wrong and it is not logical as well.

As you have nothing to loose, please try a really older firmware which is known for not having speed bug. Just firmware, not vendor.

Go to ip dev's GDrive https://drive.google.com/drive/folders/1zGc3v1ahsN2dpkPppNAJJMDHKl8jnQmj go to xfiles and download POCOF1Global_9.3.28-firm.zip (91MB)., this has only firmware which could be flashed in TWRP.

See if this helps. You can also try latest stock MIUI kernel from same gdrive - kernel-beryllium_global_V10.3.5.0-ak3.zip - on Custom ROM and see if that makes any changes.
[Xiaomi Poco F1 Questions & Answers] Karibes:
I tested both and it became more weird again... xD Speed increased by mere 100KB/s but... Youtube app doesn't play at 1080p and it buffers way badly than on previous build... :/

May I ask how is the Oxygen OS? I would like to try it out as well.
[Xiaomi Poco F1 Questions & Answers] indianets:
Strange things happening with your LTE :confused:

Newer 7pro ports are kind of pre-alpha and have bugs. OOS 6T Beta 10 was the last in that branch of development, which I use as daily driver, it is best per my opinion after trying lots of roms, especially if you play games. You can definitely try it if it resolves your LTE issues.

The dev has taken down links, but I have it mirrored for myself http://dl.vj.lc/Poco-OOS/ Flash OOS zip only, it has vendor included. Test it that way.

Later on, update to newest vendor and flash vendor_patch.zip. Whenever you flash new vendor don't forget to flash vendor_patch. Latest is now 9.6.18.
[Xiaomi Poco F1 Questions & Answers] Karibes:
Thanks! I will try it right now. I will inform you shortly on how it goes :good:

Edit: why did he disable links? Just asking because I peeked and I saw latest version... quite odd...

Edit1: Okay, it is literally same thing with LTE... though Oxygen OS is very smooth and I quite like it but LTE speed... is quite severly limited... Maybe something is wrong with the my phone and I need to RMA it... I really don't know... Your Poco F1 works good... so why... :crying::crying:
[Xiaomi Poco F1 Questions & Answers] indianets:
There was some controversy, dev asked for money, people disrespected him, etc etc. I didn't closely watched those events, but the outcome was bad for community.
[Xiaomi Poco F1 Questions & Answers] Karibes:
I see. Well, for now, I will stay on original MIUI and hopefully I will find something that may resolve it but for now... I sadly cannot do anything regarding LTE speed :(

Thank you very much for your great help :good:
[Xiaomi Poco F1 Questions & Answers] Daruwalla:
Gone through all the posts and sorry we couldn't help much. May be try contacting developer on TG and share this post as they are more knowledgeable in checking this issue. You can pm me your telegram ID and I will share few developers ID's who develop LOS and other roms. Do remember the devs are always busy and it might take some time to get a reply.

Or

May be it's bad karma that Xiaomi doesn't want you to leave MIUI. :laugh: If this would've happened to me, I would've sold the phone. Simply can't bear MIUI for a day, tried latest miui pro which everyone praise about, it's same crap. Using Oxygen OS from the day it's been released and my phone is rocking.
[Xiaomi Poco F1 Questions & Answers] ttreddy2210:
I'm on 10.3.5 EU
[Xiaomi Poco F1 Questions & Answers] indianets:
lol :laugh: bad karma.. You're right about MIUI, I have used it in hours, not days, first mandatory 72 hours before bootloader unlock and then a few times after getting influenced from TG, stable, beta, dev, eu.. but couldn't keep for more than a few hours. I remember there was a thread about a commit which needed to be pushed to custom roms to resolve LTE issue long time ago, before LOS was official. I am not sure if OP's issue relates to that, but good that you're asking devs about the same.

PS: I am also holding on to beta 10 6t port as you, as this is the best performer for games till now, but due to no updates and for a change i evaluate other roms in between. I saw your post in new dev thread of OOS based on 6 :good:
[Xiaomi Poco F1 Questions & Answers] Karibes:
I totally agree about MIUI, I have used it for same as you, 72h before bootloader unlock because I hate bloatwares, ads... etc. I prefer clean, stock android.

I don't have a telegram ID but I'm willing to create it just for the sake of my love for custom ROMs. Where to find telegram ID?

I'm on MIUI 10.5 xiaomi.eu 9.6.13 version (this was taken from xiaomi.eu because it has less bloatware, more optimized). For me it is far better than original MIUI.

And yes, I totally agree about MIUI, I have used it for same as you, 72h before bootloader unlock because I hate bloatwares, ads... etc. I prefer clean, stock android.
[Xiaomi Poco F1 Questions & Answers] indianets:
Install Telegram like any other messenger(say whatsapp) and register with your phone, create a username as well. You will find links to Telegram groups in many dev threads now.

Without this tool, you are even bloated on EU - https://xdaforums.com/poco-f1/how-to/tool-xiaomi-adb-fastboot-tools-t3887359 - uninstall/disable all the apps they can list, they list only safe to remove apps. Use this till you get back to custom ROMs :good:

---------- Post added at 10:26 AM ---------- Previous post was at 10:10 AM ----------

Also, this was the thread I was talking about https://xdaforums.com/poco-f1/how-to/cell-signal-worse-custom-rom-t3881912
[Xiaomi Poco F1 Questions & Answers] rajeshkoshti:
Man..read properly.

The OP is saying he gets good speed on miui but not on custom roms, why are you posting miui screenshot. We all can see ur 7.2mbps dwnld speed.
[Xiaomi Poco F1 Questions & Answers] Karibes:
I know, I already have used this tool to debloat any useless stuff. For now I'm happy with it.

Okay, I shall read it but I doubt it is going to fix. Worth to check it out though.
[Xiaomi Poco F1 Questions & Answers] Daruwalla:
Create telegram account, follow official poco group and post this thread link. Plenty of devs are members of that group.

https://t.me/pocophoneglobalofficial
[Xiaomi Poco F1 Questions & Answers] alifarhad:
hi, while I have nothing useful to add for fixing your issue, your post had me worried and I thought about testing LTE on my phone too. In all my tests, I found LTE speed of my carrier to be nearly the same on both MIUI as well as custom roms (tried with AOSP extended) so this is probably strictly related to your device or something. I hope you get a fix for this. cheers!
[Xiaomi Poco F1 Questions & Answers] Karibes:
I see... that saddens me further :crying

Problem is that I don't have a reason to RMA it since nothing wrong is with the phone and I don't want to damage it... I will still continue resarching. Thanks for the info, though. :good:
[Xiaomi Poco F1 Questions & Answers] alifarhad:
I found something else that might work for you but there's a catch, it only works if you have root access. Let me know if you have root, we could try locking to different bands of LTE provided by your carrier. I recently did something similar and increased my speed considerably compared to the regular ppl using the same network around me. :fingers-crossed:
[Xiaomi Poco F1 Questions & Answers] Karibes:
Okay, guys.

I bring a great news. Somehow crDroid has something that brings LTE speed to half speed of original. I have been getting roughly 3MB/s instead 5-7MB/s but that's plenty enough for me to stay on crDroid. I retested to be sure if maybe other Custom ROM got updated but sadly no, all other ROMs except crDroid give 500-700KB/s download speed. on other hand I get roughly 3MB/s on crDroid. Besides crDroid is quite nice ROM and I plan to stay there for long time. Maybe it doesn't have some features but I can live with them.

So, as crDroid fixed it though it is a partial because I still don't get full LTE speed.

Picture: http://prntscr.com/o9z41d
[Xiaomi Poco F1 Questions & Answers] Karibes:
Hello,

hmm, interesting. Does it matter if we are on different ROMs? I'm currently on crDroid and I would love to try it out. To answer your question, yes, I have a root installed (Magisk).
[Xiaomi Poco F1 Questions & Answers] alifarhad:
Non the rom doesn't matter AFAIK it should work on all roms though I have seen few custom kernels that don't allow band locking. So far only shadow kernel and stock kernel have been found to be working.

it works through band locking. Usually carrier have different bands running through which they provide LTE. The more users are there on the same band, the less speed you will get since the speed will be being distributed among more number of users so by locking onto different bands which has less users/traffic/congestion you can get higher speed.

This method works by downloading an app from playstore called network signal guru. Once that app works, you can search for its tutorial online. Should be plenty to find there.

Let me know if you need further help with band locking
[Xiaomi Poco F1 Questions & Answers] Karibes:
I downloaded Network Signal Guru and I gave it root access. Used forcing bands and RAT and results are same. It didn't increase the speed at all. My phone is cursed, alright. :D Though, thanks for helping. :good:
[Xiaomi Poco F1 Questions & Answers] indianets:
Glad that your issue is resolved to an extent that you're on a nice custom rom? It was/is one of a kind.
[Xiaomi Poco F1 Questions & Answers] Karibes:
Yeah, at least I'm on the custom ROM. Btw, I think I should let you know, that I retested and I absolutely have no idea what happened but even Pixel Experience works, with half speed of the original speed. However, on LineageOS, Nitrogen OS and OxygenOS, the speed is still same, 500-700KB/s. I'm totally baffled... And the reason I tried Pixel Experience is due to one problem with crDroid and that was chosing mobile network because it wouldn't let me to manually select/register the desired mobile network. It kinda went on auto and kept swicthing mobile networks all over.
[General Questions and Answers] zxzxzxzxzxzxzxzxzx:
It took me awhile to figure this out but I have finally figured it out. If you have further insight or questions, feel free to comment.

Step 1

Step 1 is to recognize which security updates have a number assigned to them by visiting:

http://doc.samsungmobile.com

An example URL for example for a chinese N9600 Note 9 for TGY [Hong Kong] would be to go here:

http://doc.samsungmobile.com/SM-N9600/TGY/doc.html

To find yours, just put it into your search engine to find the link you need:

site:doc.samsungmobile.com [insert your model here]

Example search:

site:doc.samsungmobile.com SM-N960U

Step 2

Step 2 is to look at the last 4 digits after Build Number.

In this case, I wanted to know the last security update available for Oreo 8.1.0 before it switched to Pie. So, I looked at the build number on there and found the last 4 characters to be ASA5 (for N9600 in region TGY. Your phone will be different).

Step 3

Step 3 is to find your firmware on somewhere like sammobile.

In my case I wanted to see if this firmware was the last and most updated possible firmware for Oreo on this carrier.

https://www.sammobile.com/samsung/galaxy-note9/firmware/SM-N9600/TGY/download/N9600ZHU1ASA5/253349/

By looking at the firmware CSC I am able to see this:

N9600TGY1ASA5

Let's break this down.

N9600 TGY1 ASA5

N9600 = model of the phone

TGY = most likely the region

1 = unknown. When I look at these, I see it's either 1 or 2, but that's unimportant for our purposes.

ASA5 = security update

Step 4

By looking at this and referencing the samsungmobile.com changelog page (from step 1), I can therefore see that this firmware is the correct for my N9600 phone, and it is using the latest ASA5 security update which is the last security update for this carrier that will ever be released for Android Oreo 8.1.0.

Keep in mind that a "security update" is not just a "security" update. It includes all the bugfixes for Android. I guess Google would prefer to make the updates appear to be updates "for your security", rather than updates "because there were bugs with our software that we fixed".

Hope it helps! Fee free to reply with any additional knowledge or questions.
[General Questions and Answers] eyeb1:
Bootloader

The Fifth last digit after the CSC and before the Security Patch version number is the Version of the Bootloader.
[General Questions and Answers] Droidriven:
No, it isn't the bootloader version, it is the binary version of the bootloader. Two firmware can have the exact same bootloader version but have different binary versions. It is possible to have a firmware that has "this" bootloader version with "that" binary version and then an update can be released that uses the same bootloader as the previous firmware but the update could contain a modem or system update and have a higher binary version than the previous firmware even though it has the same bootloader as the previous version.
[General Questions and Answers] Droidriven:
The "1" or "2" in the build number that you mentioned is not "unimportant", it is actually the most important character in the build number because it tells you which binary that the firmware is. The binary is very important because it decides what you can and can not flash on the device.

For example, if your device currently has a binary "2" firmware, you will not be able to flash a binary "1" firmware. Basically, you can not flash a firmware that has a lower binary than the firmware that is currently installed. This is to prevent downgrading to a less secure firmware version. If you want to stay up to date and have the most secure firmware, you need to use a firmware that has the highest binary version available for your device.

My current device has a binary 6 firmware, this means that I can not flash binary 5, 4, 3, 2 or 1 on my device. I can only flash binary 6 or binary 7 if 7 is ever released.

Keep in mind, updating binary can ruin your chances of rooting a device if the updated binary locks the bbootloader. Security updates are more about securing the carrier's network than it is about securing your device itself or about bug fixes, though, there are some things in the updates that make your device itself more secure, part of the security updates are about securing the device so that even you as the user can not crack it, this is to prevent you from rooting the device, modifying the device or flashing any kind of unapproved software on the device.

These security and binary updates are what prevent people like us here at XDA from customizing our devices. They are good for device security but they are a thorn in our sides that we can't stand because they prevent us from doing what we want with our devices.
[Google Pixel 3a ROMs, Kernels, Recoveries, & Other] ZVNexus:
​

WE NOW HAVE AN OFFICIAL TELEGRAM GROUP - StatiXOS @ Telegram​

Features

Right now you are gonna find a mixed StatiX/AOSP experience as this is a brand new project:

Spark Settings Panel introduced.

Always-On Display

Advanced reboot

Dark mode and accent theming

Statusbar battery styles

Quick unlock

SELinux Enforcing

Q Features

Upstreamed to latest Linux stable

There's obviously more, but I'm not gonna list every one. Flash and find out! :)

Known Issues:

Squeeze sensitivty is reversed. This will be fixed at some point, but not something that's exactly high priority.

Installation:

Flash using TWRP.

First, factory reset.

Flash ROM

Reboot and enjoy

Downloads

Jenkins will upload to here.

Notes

[/SIZE]

This will be the release cycle.

Nuclear updates are builds are signed with test-keys and will be released bi-weekly/weekly. These may also include some changes from our Gerrit found at https://review.statixos.me/ or changes I am personally testing.

Official builds will come monthly with each sec patch and will be signed with release keys using our build server. These will be a fresh repo sync with no changes.

Credits

Dirty Unicorns
ABC Rom
AmyClaraRose
argraur
beanstown106
CarbonROM
ezio84
Greg Kroah-Hartman
kantjer
Mazda
nardow
NexusPieX
Google
LineageOS
simarguram
skiman10

XDA:DevDB Information

StatiXOS, ROM for the Google Pixel 3a

Contributors

[URL="https://xdaforums.com/member.php?u=7299508"]ZVNexus

Source Code: https://github.com/StatiXOS/android_device_google_sargo

ROM OS Version: 9.x Pie

ROM Kernel: Linux 4.x

ROM Firmware Required: July Vendor Image

Based On: AOSP

Version Information

Status: Beta

Current Stable Version: 2.1

Current Beta Version: 2.1

Beta Release Date: 2019-06-18

Created 2019-06-18

Last Updated 2019-07-26
[Google Pixel 3a ROMs, Kernels, Recoveries, & Other] jmtjr278:
Looks nice! Thanks for the build! Keep up the great work.
[Google Pixel 3a ROMs, Kernels, Recoveries, & Other] 12paq:
NICE!

And happy to read that you're working on TWRP!
[Google Pixel 3a ROMs, Kernels, Recoveries, & Other] Archangel:
Finally some dev work on the Pixel 3a! Thank you!!!!!!!!!