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[Radio] D821 phone with wrong LTE bands (USA)

Hi all,
I hope to find a solution to a very strange problem I face. Sometime ago I bought a Nexus 5 D821. Th process was a little bit confusing, as I ordered the phone from eglobal (a chinese merchant), and the phone was delivered from the UK. until I faced my current problems, the phone worked quite nicely, so I cannot tell anything bad yet. However, recently I got a new mobile contract, which supports LTE (Vodafone Germany), but I am not able to connect to any LTE Band here. As it turns out, my phone, which in fact is the D821 Version, does only support the US LTE Bands 25, 26 and 41. I can only suppose that something strange happend during the manufacturing process, maybe this European phone should have been sold on the US market, so they patched it or something like that.
As I'm pretty sure, first you will think, well he got a D820, so whats this guy's problem, so I add some screenshot recently taken, which come from my phone. (I will add the images, once I figure out how it works.)
My Question is, is there any way to get the Europe Bands work on my phone. I found certain threads, discussing how to enable different bands on other phone versions, e.g. enable band 3 on D820, but that is not my use case.
As I understood it correctly, my hardware should support the European bands. If there really is a hardware difference, I guess that my phone neither will work on US LTE bands.
I can only speculate, so is it possible that someone extracts a certain file out of a D821, which I can flash to my phone? I read something about qnx files, which are also used to enable other bands. I think I'm quite skilled to do some further research, if someone can point me into the right direction. E.g. where can I find the configuration of the bands, is this somewhere in /proc filesystem? My phone is rooted and I'm familiar with linux and its commands. I bet it would take ages to gather all the necessary information on my own, unfortunately I do not have the time, so I though it would be beneficial to ask here for some help.
However, I would highly appreciate your comments, suggestions and any kind of help you could provide.
Best regards,
0xrayn
images can be found here (cannot upload yet to xdm, sorry):
ra23.net/imgs

Bump

momostarz said:
Bump
Click to expand...
Click to collapse
Sorry mate, wish i could help. D820 owner here, bumping your thread.

Overall Compatibility in the US

Hey guys, so I was exploring purchasing a Mi Mix 3 on Aliexpress for use in the United States. However, I had some concerns about usage in the United States, especially with the international version. Could someone please tell me about their experience with this phone in the United States, including carrier signal (preferably T Mobile), any issues you've come across using this phone in the United States, and other similar dilemmas. Thanks!

Its name Global Version for a reason, so i think it will work fine all around the world, IF its a true Global Edition.
Check carefully, many seller flash the global/eu rom on CN variant and sell them as "Global Edition".

It will work internationally whether it's a global edition or not, there's no difference in the bands between the Chinese and Global variants. The software is different, however. The Chinese software works fine in the US, but you have a bit of work to do to get the Google apps on it. The other issue is if the seller is buying the Chinese variant then loading the Global software and relocking the bootloader, because if you subsequently install an official update, you will hard-brick your device. Having said that, I can't think of any reason why sellers would be bothering with that now that the Global version is readily available, at least the more reputable ones. Gearbest always clearly mark their devices on the website as either Chinese or Global. I suppose if you wanted to be absolutely sure, you could buy from a European retailer, assuming you don't want the 8/256 model. The other option, of course, is to unlock the bootloader and (optionally) install an unofficial rom, that way you also get regular Android security updates.

I would recommend spending the extra to get the 8/256 if there is any chance you are going to get a "chinese" version. The "global" version is *supposed* to have all the bands enabled on all storage/ram configurations. However, the chinese version only has full band support on the 8/256 device. It is possible that we may be able to find a way to use QXDM and stuff to enable additional bands regardless, but I wouldn't count on that. I spent the extra to get an 8/256 which now has the leaked global rom on it. The global software works great and I have atleast equivalent coverage to my work Pixel 2 XL, usually with slightly better signal levels.
I have no complaints about this device, the only thing I have noticed is it seems that the glass is not as hard on some units. I bought my wife an 8/256 device and she is not exactly gentle on her device. Her screen has no scratches, but mine has many already after about 2 months, and I'm pretty careful with my devices. And to be clear, these are light surface scratches that are only visible when tilting the device with the screen off, not something you can see with the screen on.

I have T Mobile. I get better reception on Mi Mix 3 than I got on both my Note 8 and my iPhone 7. I know this because there's a spot I park every day and the MiMix works there when the others didn't.
I got 96mbps on 4G LTE when I tested it.
Of note: I did have an original MiMix 1 and it was not good for reception. At all. But the 3 has something like 42 bands in, and it has the best reception of any phone I've had.

PWn3R said:
I would recommend spending the extra to get the 8/256 if there is any chance you are going to get a "chinese" version. The "global" version is *supposed* to have all the bands enabled on all storage/ram configurations. However, the chinese version only has full band support on the 8/256 device. It is possible that we may be able to find a way to use QXDM and stuff to enable additional bands regardless, but I wouldn't count on that. I spent the extra to get an 8/256 which now has the leaked global rom on it. The global software works great and I have atleast equivalent coverage to my work Pixel 2 XL, usually with slightly better signal levels.
I have no complaints about this device, the only thing I have noticed is it seems that the glass is not as hard on some units. I bought my wife an 8/256 device and she is not exactly gentle on her device. Her screen has no scratches, but mine has many already after about 2 months, and I'm pretty careful with my devices. And to be clear, these are light surface scratches that are only visible when tilting the device with the screen off, not something you can see with the screen on.
Click to expand...
Click to collapse
So I just want to confirm. If I buy a mix 3 in China and then flash itd to a global ROM (e.g. EU) then I should have no issues using it in the US (I'll be on T-Mobile).

There is a serious problem to me not sure if it's because of Mi MIX or TMobile combination (Los Angeles area)
Same problem on my wife's MIX 2S and my MIX 3, both official global version and latest firmware.
When the phone is on wifi, even though the mobile connection looks connected, it might have been disconnected actually.
No call and message will come through. People's calls will go to voice mail.
You will not know that until someone tell you they can't call you on the phone, or when turning off wifi suddently all missing text/MMS messages will arrive.
I'm still searching on more information on this and if some others have the same issue.
One of you friends used to have similar issues using a Samsung Galaxy on TMobile before he switched to iPhone.

Working great here in MN on T-Mobile no issues at all. I have the global edition.

It works for the most part on Verizon (a carrier which doesn't technically support it), the only issues I have are with MMS messaging (which is fixed in another thread) and my mobile hotspot which Verizon seems to be unable to turn on properly. Other than that I haven't had any issues. I would imagine on a GSM carrier like T-Mobile you would see even fewer problems, if any.

Rockmadeofrock said:
It works for the most part on Verizon (a carrier which doesn't technically support it), the only issues I have are with MMS messaging (which is fixed in another thread) and my mobile hotspot which Verizon seems to be unable to turn on properly. Other than that I haven't had any issues. I would imagine on a GSM carrier like T-Mobile you would see even fewer problems, if any.
Click to expand...
Click to collapse
How did you get it to work with Verizon? I entered my IMEI and it isn't compatible.

Matt0817 said:
How did you get it to work with Verizon? I entered my IMEI and it isn't compatible.
Click to expand...
Click to collapse
All you need to do is pop in a Verizon SIM card and change the APN settings and it'll work. Sometimes the SIM card won't let you change them (because Verizon locks them down), but that didn't happen to me. If that's the case, grab someone else's SIM card that has like T-Mobile, put it in your phone, add a new APN, then put the Verizon one back in and select the APN you made. I detailed the settings you need to set in these posts: _1_, _2_. If you need any additional help let me know.
Also, if you want to enable VoLTE check out this thread.

Root for the CAT S22 + (review!)

So I bought the s22 flip unlocked and am decently excited about it. Its clearly a beta-ish device, with some bugs. The screen sometimes goes black and the keyboards are little frizzy.
General:
Size: Yes it's a brick. Don't be surprised. I do wish there was a smart flip phone on the market that more resembles the nice old compact ones, but the only other model seems to be the galaxy folder 2 and that don't work in the US. The screen is small and can feel cluttered, but it's usable.
Battery: the battery life is pretty meh. It'll probably last a day.
Specs: it's slow and has 2 gigs of ram and 16 of storage. Up to 128gb expandable. I tried putting in 256 and it didn't work.
Wierd things they don't tell you: It has no t9 (why?!) But it can be sideloaded. Doesn't seem to care about hotspot provisioning. IT SUPPORTS CDMA (and 5G?) ON SOME MVNOs! I popped in a verizon sim, and with data set to lte only connection is great but no volte.
Best of all, unlockable bootloader! So how can we go about unlocking this device? I've spoken to both CAT support and Bullitt group, and they told me "
Bullitt Group do not distribute the stock ROM for any of our devices.
This is part of our contractual obligations with our partners and the Brands that we represent". So so much for that. What now?

I'm curious about the possibilities as well.
Also about network settings best for 4g/LTE
As right now mine only connects to 2g

well I just got one of these devices and want to at least update it to a full version of android instead of Android Go!
I read that you can sideload android 11 on it and just don't overwrite the drivers.
When you talked with Cat/Bullitt did you ask them if they are ever going to update the firmware on the phone at all? Most phones even T-mobiles bottom of the line phones still get 1 OTA update in firmware to fix initial issues. and most companies are at least providing one level of android updates also.
Any luck with any software work arounds? As for best 4g/LTE settings that is carrier specific, you can change those in developer mode and manually set them up under sim settings.
I plan to use mine on a T-Mobile MVNO so shouldn't have any issue there as this was a Tmobile phone originally that I just got "NEW" unlocked.
I might reach out to T-Mobile for firmware also, as they have to have multiple versions of the firmware as they have T-Mobile branded bloatware on some and Metro branded Bloatware on others.

I just picked up an S22. I've tried TeamSpeak and Mumble, and the PTT won't work when the flip is closed. Any suggestions? Thanks

Hello everybody. I got s22 flip. I am in Italy and I can't use it. Seller said is working with any 4g simcard. But my phone is not working. Any suggestion? Thanks

I need help. I flashed boot from 29 firmware to 30. Root is activated, but Wi-Fi and speakers do not work. I need an update.zip from 29 to 30 firmware.

i have 30 version and i need boot.img to root
i need help to root anybody help?

Question S22 Ultra esim enable TGY csc

Hello all, new here! Never rooted a device, I'm very technical and confident but would like to ask the question as to why I'm looking to root or change CSC.
Currently my S22 ultra 512 is a Dual sim Hong Kong purchased device. TGY is the current CSC, basically I'd like to use the esim option and phones sold in Asia specifically China, Hong Kong & Macau at least I'm told have this disabled. My note20 ultra dual sim is the same. By changing csc/firmware can I enable this feature that other s22s have? Basically is there another s22 with identical hardware dual SIM and all that I can put on the phone that will enable this feature? I'd like call recordeding if possible as a phone feature rather app but it's not important. I'll attach screen shots of what versions I currently have. Sorry if I'm asking the wrong questions I'm technical but new to android rooting.. Willing to PayPal or donate to anyone who can assist me through the process. SM-S9080 TGY I know the Taiwan sold device is basically the same hardware but have not received a clear answer if esim is enabled, thinking no but figured I'd mention it. I'd also like to do the same to my Note20 Ultra. Thanks in advance

Watching

I think SM-S908E/DS is the same hardware
Dual sim snapdragon variant for midd&le east

hoss_n2 said:
I think SM-S908E/DS is the same hardware
Dual sim snapdragon variant for midd&le east
Click to expand...
Click to collapse
Interesting, so worth a try? I'm fairly worried and willing to pay for advice. Rather not brick my phone .. [email protected]
Or WhatsApp is +85254440929
Appreciate the quick response.

I'm hoping this works out, I assume if it does my Note 20 ultra 512g dual sim hk spec phone will to using the same principle?

hoss_n2 said:
I think SM-S908E/DS is the same hardware
Dual sim snapdragon variant for midd&le east
Click to expand...
Click to collapse
Would there be any issues using a UAE CSC such as XSG? Or would another CSC be suggested? I'm aware that in parts of UAE you can not use WhatsApp or equivalent calling ect? Sorry for the basic questions, last one lol.. Doing this will root the phone or just change the software?
Thank you kindly

12453RS3 said:
Would there be any issues using a UAE CSC such as XSG? Or would another CSC be suggested? I'm aware that in parts of UAE you can not use WhatsApp or equivalent calling ect? Sorry for the basic questions, last one lol.. Doing this will root the phone or just change the software?
Thank you kindly
Click to expand...
Click to collapse
Egy csc have call recording , but this is only valid for s22 ultra because both are snapdragon , for note 20 ultra different hardware
12453RS3 said:
Would there be any issues using a UAE CSC such as XSG? Or would another CSC be suggested? I'm aware that in parts of UAE you can not use WhatsApp or equivalent calling ect? Sorry for the basic questions, last one lol.. Doing this will root the phone or just change the software?
Thank you kindly
Click to expand...
Click to collapse

Hi Guys, someone can confirm if CSC TGY have esim activated on S22 ultra SM-S9080? o wich carrier could have it?

I'm having exactly the same issue... just tried out the HK and CN variant. Both don't an eSIM support.
However, I've also read somewhere that Samsung has "dropped" the eSim support in on of the recent Firmware versions, because the had too much trouble with that.
So the quesetion is: Is this a regional issue (e.g. TGY, etc.) or is is a "Version" issue (e.g. an earlier version still might have it)
Best!

hoss_n2 said:
I think SM-S908E/DS is the same hardware
Dual sim snapdragon variant for midd&le east
Click to expand...
Click to collapse
hi i have a s9080 hk model and tried flashing the s908e/ds firmware through odin buy kept getting failed partition error

i want to share my experience with my note9, it was the N variant - South Korea, i had network issues in which case i had to root my phone and install a custom rom which had csc of my country and i worked great.
if you could do with a rooted phone follow this:
1. check if your phone is listed as rootable.
2. check if your phone has a custom rom:
if YES you could see or ask for what you need ( in the Rom's forum or the developer).
if NO wait and keep researching.
dont flash another region firmware even if its the "same phone" you might break the phone.

Okay, quick info: I've flashed all three regions (China, Hong Kong, Taiwan) on the SM-S9080 (current firmware versions june to Sep) and none of them have eSIM support.
This is really annoying - especially when all the offical samsung websites praise that the phone supports esim.
I'm personally pretty pissed off and the key reason is that I know that other users of the same phone in other regions of the world can use it and I'm not able to do this, because the programmers just want to make their lives easy and "silently" drop this feature from the firmware.
Something similar happened about 15 years back with a Sony device and since then I've never ever bought anything from Sony again (neither phone nor anything else). So the same is probably going to happen with Samsung.

SamLux said:
Okay, quick info: I've flashed all three regions (China, Hong Kong, Taiwan) on the SM-S9080 (current firmware versions june to Sep) and none of them have eSIM support.
This is really annoying - especially when all the offical samsung websites praise that the phone supports esim.
I'm personally pretty pissed off and the key reason is that I know that other users of the same phone in other regions of the world can use it and I'm not able to do this, because the programmers just want to make their lives easy and "silently" drop this feature from the firmware.
Something similar happened about 15 years back with a Sony device and since then I've never ever bought anything from Sony again (neither phone nor anything else). So the same is probably going to happen with Samsung.
Click to expand...
Click to collapse
When you flash a different CSC, I read that since basically the firmware reads your sim, grabs the CSC from that, that if you leave it out, on the boot up screen before you start the setup, you can hold Volume down, I believe or some button combo to skip through set up so you don't need a SIM to complete it.. then you have the actual firmwares original CSC and not the one that was read from your SIM card.. Cuz if not no matter what firm u are you flashing, if your SIM card is in there and you run set up it's going to go by that. The firms are supposedly all the same but what's changes is the CSC each time.. now overseas, United States, snapdragon vs Exyno it's a different story. They do have different firmware's...
But I do know that the phones are basically all universally the same all the same hardware but it's the firmware the software that does all the matter of difference... Including the bootloader for instance. We all have the same hardware but I can't unlock mine it's software there that can do it.. if I find the site up forward it for you.. have you gone into the service mode after enabling it? There's a bunch of crap you can do in there that has to do with antennas and SIM cards and ESIM stuff you might just need to enable something.

soyelreyy said:
When you flash a different CSC, I read that since basically the firmware reads your sim, grabs the CSC from that, that if you leave it out, on the boot up screen before you start the setup, you can hold Volume down, I believe or some button combo to skip through set up so you don't need a SIM to complete it.. then you have the actual firmwares original CSC and not the one that was read from your SIM card.. Cuz if not no matter what firm u are you flashing, if your SIM card is in there and you run set up it's going to go by that. The firms are supposedly all the same but what's changes is the CSC each time.. now overseas, United States, snapdragon vs Exyno it's a different story. They do have different firmware's...
But I do know that the phones are basically all universally the same all the same hardware but it's the firmware the software that does all the matter of difference... Including the bootloader for instance. We all have the same hardware but I can't unlock mine it's software there that can do it.. if I find the site up forward it for you.. have you gone into the service mode after enabling it? There's a bunch of crap you can do in there that has to do with antennas and SIM cards and ESIM stuff you might just need to enable something.
Click to expand...
Click to collapse
What I've (think to have) learned so far:
There are two different hardware combinations: (a) the snapdragon variant and (b) the Exynos combination. For each combination, there are differernt firmwares available
Each firmware (e.g. SN-S9080) is a special combination of modem-settings, software configuration, etc. that is geared to optimize the phone performance and battery consumption
For each firmware, you have then certain CSC variants, wihch then further add which apps are available, etc. (for example in the Taiwan variant, Google is available, while in the China Mainlaind variant it is not)
During the first-time installation process, you can choose the language of the phone (and maybe also the CSC), but you can't change the firmware
Therefore, my problem is this: I've tried all the CSCs which are available for m firmware (SN-S9080) but none has eSIM support. Now I want to flash a differetn firmware (e.g the SM-S908E firnware), but Odin currently doesn't let me flash this onto my phone.
Does anyone have a guidline of how to flash a SN90E firmware onto a phone which currently runs a SN-S9080 firmware?
Best!

SamLux said:
What I've (think to have) learned so far:
There are two different hardware combinations: (a) the snapdragon variant and (b) the Exynos combination. For each combination, there are differernt firmwares available
Each firmware (e.g. SN-S9080) is a special combination of modem-settings, software configuration, etc. that is geared to optimize the phone performance and battery consumption
For each firmware, you have then certain CSC variants, wihch then further add which apps are available, etc. (for example in the Taiwan variant, Google is available, while in the China Mainlaind variant it is not)
During the first-time installation process, you can choose the language of the phone (and maybe also the CSC), but you can't change the firmware
Therefore, my problem is this: I've tried all the CSCs which are available for m firmware (SN-S9080) but none has eSIM support. Now I want to flash a differetn firmware (e.g the SM-S908E firnware), but Odin currently doesn't let me flash this onto my phone.
Does anyone have a guidline of how to flash a SN90E firmware onto a phone which currently runs a SN-S9080 firmware?
Best!
Click to expand...
Click to collapse
i think the chinese s9080 is locked down only because you cant flash other firmware like other models most secret codes like to change bands dont work and this model took agesto get one ui 5.0 update

Well, I can flash different CSC variants, e.g. the Taiwan or the HK variant (and these are not multi-CSC firmwares, but seperate files).
However, does anyone have an idea of how to flash e.g. the S908E firmware onto a phone that is currently running S9080?
I was able to flash all files of the S9080 variant (including BL - the boot loader), so that means that the phone is *not* locked, right?
I've tried to click the repartitioning option (because the S908E is bigger than the S9080), but that also didn't help.
Do I maybe really need need to "root" the phone first for flashing another firmware? This doesn't sound logicall, so I tried to avoid rooting so far ...
Any ideas or a link to a "how to" is warmly welcome ...

soyelreyy said:
When you flash a different CSC, I read that since basically the firmware reads your sim, grabs the CSC from that, that if you leave it out, on the boot up screen before you start the setup, you can hold Volume down, I believe or some button combo to skip through set up so you don't need a SIM to complete it.. then you have the actual firmwares original CSC and not the one that was read from your SIM card.. Cuz if not no matter what firm u are you flashing, if your SIM card is in there and you run set up it's going to go by that. The firms are supposedly all the same but what's changes is the CSC each time.. now overseas, United States, snapdragon vs Exyno it's a different story. They do have different firmware's...
But I do know that the phones are basically all universally the same all the same hardware but it's the firmware the software that does all the matter of difference... Including the bootloader for instance. We all have the same hardware but I can't unlock mine it's software there that can do it.. if I find the site up forward it for you.. have you gone into the service mode after enabling it? There's a bunch of crap you can do in there that has to do with antennas and SIM cards and ESIM stuff you might just need to enable something.
Click to expand...
Click to collapse
with an without SIM card didn't make a dfference. The firmware files for 9080 are all single CSCs anyway.

So after more than five weeks of trying around, I finally have to say that it seems impossible to enable eSIM on a 9080 (i.e. the version bought in China).
I've tried so many things by now (the VN Rom, the Dr Ketan Rom, switching CSC to Hong Kong or Taiwan, etc.).
So my conclusion is this: You have two options
a) Don't buy a Samsung Galaxy phone at all
b) If you really want to by a Samsung, then buy on from a region where there are the least restrictions on your firmware in the first place.
Everything afterwards turns into frustration.

Samsung Galaxy XCover 6 Pro - are there different versions?

Hi all, I'm asking here because there is no dedicated subforum for XCover 6.
So, I'm planning on buying Galaxy XCover 6Pro but I'm getting confused if there are different version of it out on the market? I've noticed that shops in my country (Poland) mark phones they are selling using these three different product numbers:
sm-g736bzkdeeb,
sm-g736bzkdeee,
sm-g736bzkd
with the first one (EEB) being called "Enterprise Edition" appearing in most of stores while the offical samsung.com store lists XCover 6Pro with "EEE" product number. Neverthless google shows up a samsung page for the "EEB" model too.
https://www.samsung.com/uk/business/smartphones/xcover/galaxy-xcover6-pro-sm-g736bzkdeeb/
https://www.samsung.com/levant/business/smartphones/xcover/galaxy-xcover6-pro-sm-g736bzkdeee/
So i checked the specs, in stores and on these samsung pages and they all appear to be the same XCover 6 Pro, 6GB 5G phones with Dual Sim in black colour.
So here is my question. Are they really the same phone or there is some difference that's my eye is missing?

The difference between the two devices you have named, is that one is made for the German market (EEB) and one is made for the eastern European and Swiss/Austrian markets (EEE).
There may be some issues with things such as samsung pay if you are using a device outside of its region but overall the device should work fine either way.
With the previous model (G715FN), I was able to flash to my local firmware without issue and all bands worked flawlessly as well as all localised features such as samsung pay. Unfortunately once this is done, you will not receive OTA updates any longer as it recognises your device has been modified. This may be because I tripped knox doing all this.
The only other thing to look out for is that you aren't buying a device that has been locked to a given carrier, or requires a sim from that carrier for activation.
Again, there's usually ways around this but you don't need to complicate your life like that.
If you are able to buy locally, surely they can give you some assurances that the device will work with your local providers?
There is no difference in specs, bands etc, it's just localisation support and operator specific configurations to worry about.
Samsung generally include all international MBN files in their modem config files so it's not such a huge deal these days as long as you can successfully register the device for use.

bandario said:
The difference between the two devices you have named, is that one is made for the German market (EEB) and one is made for the eastern European and Swiss/Austrian markets (EEE).
There may be some issues with things such as samsung pay if you are using a device outside of its region but overall the device should work fine either way.
With the previous model (G715FN), I was able to flash to my local firmware without issue and all bands worked flawlessly as well as all localised features such as samsung pay. Unfortunately once this is done, you will not receive OTA updates any longer as it recognises your device has been modified. This may be because I tripped knox doing all this.
The only other thing to look out for is that you aren't buying a device that has been locked to a given carrier, or requires a sim from that carrier for activation.
Again, there's usually ways around this but you don't need to complicate your life like that.
If you are able to buy locally, surely they can give you some assurances that the device will work with your local providers?
There is no difference in specs, bands etc, it's just localisation support and operator specific configurations to worry about.
Samsung generally include all international MBN files in their modem config files so it's not such a huge deal these days as long as you can successfully register the device for use.
Click to expand...
Click to collapse
Thanks for detailed explanation!

Anyone tried root with Magisk?

bandario said:
Anyone tried root with Magisk?
Click to expand...
Click to collapse
I have one I got recently, but have not used Magisk. Doesn't one have to access bootloader to do that? Which is my question: Anyone have an unlock for the bootloader?

Yes. There's instructions Here