Database Users

RESOLVED: Enabling LTE on Samsung Galaxy Note 3 (model: SM-N900W8)

Have a Samsung Galaxy Note 3 (model: SM-N900W8) and wish to enable LTE for a specific carrier? Follow these in-depth instructions and you will enable LTE for this specific model. My Samsung Galaxy Note 3 model is from WIND Mobile and I use both WIND Mobile and Telus SIMS on the device (interchange when needed). When using WIND, I get their default 4G data speeds and with Telus, I now have LTE which is like going from a Honda to a Corvette.
These instructions will work with all the SM-N900W8 models but you will need to select the appropriate root for your country/carrier (as indicated in Chainfire's post).
Should you have any questions, please respond to the post or send me a PM and I will assist where possible.
Thank you to the following 3 individuals! Some assisted with their general posts while others provided informative information via PM to ease me into the process:
AllGamer
Chainfire
asaqwert
UNLOCKING YOUR DEVICE
Before you are able to use another carrier SIM in your device, you must first unlock the device. I know there is a method of doing this for free after rooting but I paid $32.99 USD and received my unlock code through cellunlocker.net. If unlocking to use a SIM from another country, make sure you first activate with the original SIM. Failure to do so will region lock the device so you cannot use it with an International SIM. The only way around this is to pay a Samsung technician to reset the device. Since I use WIND and Telus, both carriers are Canadian so I went ahead and unlocked my device using the Telus SIM directly as I do not need to worry about a regional lock.
ROOTING THE DEVICE
1) Download and install Kies (for the Drivers) from here http://www.samsung.com/ca/support/model/SM-N900WZKEBWA
2) Download the ODIN software and ROOT provided by Chainfire:
http://forum.xda-developers.com/showpost.php?p=46098951&postcount=3
3) Unzip the files just downloaded and run the ODIN software. Once loaded, click on the PDA button and browse to the ROM file:
CF-Auto-Root-hltecan-hlteub-smn900w8.tar.md5 (this was the file I selected for my Canadian provider as my device is WIND Mobile). Make sure the check-box in the ODIN software that says "Re-Partition" is either unchecked or greyed out.
4) Power off your device and once off, reboot into the Android system by pressing Volume Down + Home Button + Power (all at once). When you see the Galaxy Note 3 logo, let go and it will present you with a warning regarding installation of customized OS's. Click on the volume up button and this will allow you to continue and present you with a Android logo screen and the word "Downloading".
5) Plug your device into the USB port and click on the "Start" button within the ODIN software. It should take a couple of minutes but the status window in ODIN should say successful.
CONGRATULATIONS... You have now rooted your device!
---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
INSTALLING TWRP (TEAM WIN RECOVERY PROJECT)
I loaded the above program which I recommend you do as well. TWRP is a fully touch base recovery software program that allows you to store/backup and save custom ROMS either to your computer or to the device itself through internal storage or external SD. Think of it as a simple way to manage your device rather than having to enter a bunch of codes or press key sequences to get into specific low level menus of your device.
The software can be downloaded from the following link. I downloaded the latest 2.6.3.4 version:
http://goo.im/devs/OpenRecovery/hltecan
1) Power off your device and once off, reboot into the Android system by pressing Volume Down + Home Button + Power (all at once). When you see the Galaxy Note 3 logo, let go and it will present you with a warning regarding installation of customized OS's. Click on the volume up button and this will allow you to continue and present you with a Android logo screen and the word "Downloading".
2) Load the ODIN software, click the PDA button and select the TWRP package you just downloaded:
openrecovery-twrp-2.6.3.4-RC1-hltecan.img
3) Plug your device into the USB port and click on the "Start" button within the ODIN software. It should take a couple of minutes but the status window in ODIN should say successful.
CONGRATULATIONS... You have just installed the TWRP software which will open your device up to a world of possibilities.
---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
INSTALLING AN LTE CAPABLE ROM/MODEM
Now that you have your device rooted and the TWRP software installed, we now want to enable the LTE capability so you can use this device at the best speeds possible! Unlike what many have posted, I confirmed with AllGamer you can load any carrier SM-N900W8 ROM onto the device as long as the models version match (ie: SM-N900W8). My device is WIND Mobile and this carrier does not support LTE so the fastest speed I can select is 4G which is WCDMA/GSM in the network mode settings. Since I will be using the device on Telus with LTE data speeds, I want to install this ROM but ensure the device will have LTE as a option which I can select under network mode.
1) Go to the following link and download the carrier specific ROM for the provider you wish to use your phone with (in my case, Telus):
http://www.samsungis.com/Firmwares/SM-N900W8.html
2) This is a large file so I downloaded it to my Pcloud account then onto my computer which took about 30 minutes. Once the file is on your computer, extract the contents.
3) Power off your device and once off, reboot into the Android system by pressing Volume Down + Home Button + Power (all at once). When you see the Galaxy Note 3 logo, let go and it will present you with a warning regarding installation of customized OS's. Click on the volume up button and this will allow you to continue and present you with a Android logo screen and the word "Downloading".
4) Load the ODIN software, click the PDA button and select the ROM package you just downloaded (in my case, Telus):
N900W8VLUBMJ1_N900W8OYABMJ1_N900W8VLUBMJ1_HOME.tar.md5
5) Plug your device into the USB port and click on the "Start" button within the ODIN software. It should take around 5 minutes but the status window in ODIN should say successful.
6) Your device will now reboot and you will need to go through the setup process. Once complete, you think LTE will be enabled but you are wrong! You must dial the following key sequence to bring up a regional carrier menu: *#272*[IMEI]# (that is *#272* (your IMEI number) #) - To find your IMEI number, check your manufacturer box or press *#06# from your call menu and it's the first 15 - digits.
When the menu pops up, it will show a listing of codes and it matches the "region" list that's shown at the following link: http://www.samsungis.com/Firmwares/SM-N900W8.html
When the menu comes up, select the regional code for the carrier ROM you just installed (in my case, Telus which was "TLS"). The phone will now go through a reset/boot sequence and come this time, it should read the APN settings from your SIM card and viola, you now have LTE. If you do not see LTE but 3G, you will need to ensure your APN settings are correct and then go into the Network Mode and ensure you have LTE/WCDMA/GSM (auto mode) selected.
CONGRATULATIONS... You now have rooted your device, installed a custom ROM for the carrier you wish to use LTE on and have LTE capability. Since you have installed a specific ROM and set the regional carrier settings to this ROM, if you look under your status menu, instead of it saying "Custom" next to "Device Status", it will show "Original".
I hope this information helps others who have been stuck with enabling LTE on their device. Remember, LTE will only work for carriers who support LTE capability. Should I switch my SIM card and put my WIND SIM back into the device, it will work but the MAX data speed I will get is 4G.
Good luck everyone and again, please thank the above 3 individuals for the countless amount of times they have helped us members out with our problems!

Great post!
seems like the most important part was step #6
that was the missing info to complete the LTE setup.

AllGamer said:
Great post!
seems like the most important part was step #6
that was the missing info to complete the LTE setup.
Click to expand...
Click to collapse
Thanks! Look at everything that can be accomplished with a little hard work, dedication and assistance from those in the know. I only wish I was able to figure this out sooner without bricking a device. A costly mistake but a learning experience so all in all, no complaints!

will this work for the N9005 model?? I currently have
AP: N9005XXUBMJ1
CP:N9005XXUBMJ1
CSC: N9005OLBBMI3
Im using T-mobile right now, and would like to know if its possible to get the LTE for T-mobile in the US.
Thank you

So let's say I have a Mobilicity N3, and use this method to install the Bell ROM. Does this mean I now have a "Bell" N3? Will the OTA updates still work? Will this cause any known issues? If I factory reset the phone, it will be reset as a Bell N3?
Theoretically, installing any of the Big 3 (Robellus) ROMs should do the trick from an LTE perspective, assuming you've SIM-unlocked the phone, yes?

Mercath said:
So let's say I have a Mobilicity N3, and use this method to install the Bell ROM. Does this mean I now have a "Bell" N3? Will the OTA updates still work? Will this cause any known issues? If I factory reset the phone, it will be reset as a Bell N3?
Theoretically, installing any of the Big 3 (Robellus) ROMs should do the trick from an LTE perspective, assuming you've SIM-unlocked the phone, yes?
Click to expand...
Click to collapse
Hi, i have an N900W8 Rogers Note 3. I have a T-Mobile rom flashed on the phone., however, my baseband is still MJ1 (Same as my Rogers stock rom). And im having Poor LTE reception. Can you provide a CWM flash-able zip modem i can flash that might fix this issue? Or can i download the stock rom myself and flash ONLY the Modem? Thanks!

therockk said:
Hi, i have an N900W8 Rogers Note 3. I have a T-Mobile rom flashed on the phone., however, my baseband is still MJ1 (Same as my Rogers stock rom). And im having Poor LTE reception. Can you provide a CWM flash-able zip modem i can flash that might fix this issue? Or can i download the stock rom myself and flash ONLY the Modem? Thanks!
Click to expand...
Click to collapse
I suggest to do verifications before you flash a modem. Call Rogers and ask tell to do a "resend to switch". Call from an other phone if u can and listen to instructions
Also, update the phone to the latest firmware to have the latest modem.
Info: you can flash kitkat although the approved version by Rogers itself is not out yet.
Sent from my SM-N900W8 using XDA Premium 4 mobile app

Dral29 said:
I suggest to do verifications before you flash a modem. Call Rogers and ask tell to do a "resend to switch". Call from an other phone if u can and listen to instructions
Also, update the phone to the latest firmware to have the latest modem.
Info: you can flash kitkat although the approved version by Rogers itself is not out yet.
Sent from my SM-N900W8 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
Hi, i am with Fido. The Note 3 is from Rogers though (Same company). I dont want to flash the entire stock rom is the reason im asking for only the modem. I was wrong before, currently im using an N9005 Note 3 rom called Hawkish Elite. And the rom i was on prior to this one was the T-Mobile Note 3 based Darthstalker rom. I really dont want to have to flash the stock rom. So any information would be greatly appreciated. Thanks!

This firmware download link for rogers canada is dead....anyone has the other link?thanks...

Nothing ever freakin pops up!
Running crash 43 rom on a Mexican n9008w

Rogers LTE issue
hello all,
I was wondering if someone could guide me in the right direction as i need help enabling LTE on my phone on the rogers network.
I came across a thread about enabling LTE on the SM-N900W8 model of the samsung galaxy note 3 (the one i have)
I do not have LTE showing up on my phone, i tried speed test and the best i get is 4G with 9mb download speeds.
I actually sent my phone in to repair and the gentleman swapped out the motherboard to change the IMEI legally.
Its an unlocked phone at this point and it has model number SM-N900W8, ive gone into the settings and selected LTE coverage but it doesnt give me more than 4G.
getting back to the instructions on the thread, i had a couple of questions.
If my phone is already rooted to another version can i follow the step by step instructions and "re-root" over the existing root which is the second instruction after unlocking the phone itself in this thread. Will it "brick my phone?"
on The third set of instructions for installing an LTE capable ROM/Modem i dont see any rogers options when i click on the link...can i load a Bell one as currently i think my phone had a bell one installed onto it as it had Bell TV bloatware etc when i got it back from the motherboard swap out. IT IS an original Rogers phone.
your guidance on this matter is greatly appreciated, i was so happy to search and find a thread helping with my needs!
First post!

I have a Fido firmware on my device (country code FMC)... and I'm using it with Virgin Mobile. Do I really need to do all those steps if connecting to LTE is not really a problem right now? I did not do a speed for now because LTE coverage is nearly non existent where I am... but I see it connecting to LTE.
If I do all the steps to change the ROM and CSC, will it format/reset my device?
Sent from my Galaxy NOTEPRO 12.2

No one said this is going to
ERASE YOUR PHONE!!!
---------- Post added at 05:52 PM ---------- Previous post was at 05:29 PM ----------
Also for those unaware you can force LTE only by typing in *#2263# and Selecting LTE Band Pref -> LTE ALL
Please note you will be unable to receive a voice call as (in Canada at least) calls are still handled on the UMTS/HSPA network as no carrier I'm aware of has VoLTE yet.

...and if one switches over to LTE only, can that same phone be put back without issue? any tested?
@Class said:
No one said this is going to
ERASE YOUR PHONE!!!
---------- Post added at 05:52 PM ---------- Previous post was at 05:29 PM ----------
Also for those unaware you can force LTE only by typing in *#2263# and Selecting LTE Band Pref -> LTE ALL
Please note you will be unable to receive a voice call as (in Canada at least) calls are still handled on the UMTS/HSPA network as no carrier I'm aware of has VoLTE yet.
Click to expand...
Click to collapse

@Class said:
No one said this is going to
ERASE YOUR PHONE!!!
---------- Post added at 05:52 PM ---------- Previous post was at 05:29 PM ----------
Also for those unaware you can force LTE only by typing in *#2263# and Selecting LTE Band Pref -> LTE ALL
Please note you will be unable to receive a voice call as (in Canada at least) calls are still handled on the UMTS/HSPA network as no carrier I'm aware of has VoLTE yet.
Click to expand...
Click to collapse
LOL DAAAH!!! clean install of KDZ will WIPE all your stuff. read next time before doing something.

last part not working
when i type *#272*[IMEI]# (that is *#272* (your IMEI number) #) it does not work when i use the first 15 digits of my imei. is there a different code i could try?

carlos1984 said:
when i type *#272*[IMEI]# (that is *#272* (your IMEI number) #) it does not work when i use the first 15 digits of my imei. is there a different code i could try?
Click to expand...
Click to collapse
That code is used for changing the CSC.
You can use my app instead: Phone INFO ★Samsung★
Go to the Menu > Other Tools > CSC Changer.

thank you
vndnguyen said:
That code is used for changing the CSC.
You can use my app instead: Phone INFO ★Samsung★
Go to the Menu > Other Tools > CSC Changer.
Click to expand...
Click to collapse
gotit ith your app , thank you

@Class said:
No one said this is going to
ERASE YOUR PHONE!!!
---------- Post added at 05:52 PM ---------- Previous post was at 05:29 PM ----------
Also for those unaware you can force LTE only by typing in *#2263# and Selecting LTE Band Pref -> LTE ALL
Please note you will be unable to receive a voice call as (in Canada at least) calls are still handled on the UMTS/HSPA network as no carrier I'm aware of has VoLTE yet.
Click to expand...
Click to collapse
You mean if I activate lte this way I won't be able to make calls? Do I have to disable enable lte everytime I need lte?
Sent from my SM-N900W8 using XDA Free mobile app

This worked for me. I now have LTE on AT&T.
Thanks!

Enable wifi calling on samsung purchased s8

I am on Three (UK) and I now understand that wifi calling is a carrier feature and a phone purchased direct from samsung will not have this enabled.
I have found that you can flash carrier firmware to enable this but I have a few questions:
Can i do so without the carrier bloat such as a horrible boot screen and preinstalled apps?
Will this affect my Knox / android pay / secure folder access?
Is there any way I can flash the wifi calling functionality without a complete reflash?
Thanks

Does 3 have WiFi calling? I don't think so.
Unless it's new. I left them in Feb after many years to get Volte. There was no voWifi then.
The reason I ask is voWifi worked out the box on my unlocked BTU S8 with EE.
Volte did not and required me to flash the EE firmware. This works a treat. No knox trip, no branding or bloat, no AP or secure folder issues.
If you want supervoice, you will need to flash the firmware.
Edit - seems I was speaking bollocks, yes they have WiFi calling, called "embedded wifi" now. As said, with EE this worked out the box for me. Only needed their firmware for Volte.

Three does have voWiFi aswell as voLTE/vo4G (In select areas).
Call Three and make sure WiFi Calling is enabled on your account and then you should receive a carrier update adding the WiFi Calling option.
(Source: Method I used with Vodafone UK)

I though three used an app for WiFi calling? Or at least that was the only way I could get it to work when I was with them a few years ago.
Edit: I've just read that they have built in vowifi but only on certain handsets. Perhaps the s8 isn't supported as yet?

I did a chat with them, S8 is supported for voWifi it seems.

Here in Poland, phone with non branded system works with WiFi calling. There's setting in dialer options (three dots menu). After I toggled it on wifi calling started to work.

TIM purchased s8 here, flashed the h3g firmware and volte and WiFi calling both function.
Bloat is there (boot screen and m$ office).
No call to three required to activate, it just works as soon as the correct CSC is on the device
Sent from my SM-G950F using Tapatalk

Three's website does confirm the S8 is compatible for WiFi Calling.
Go into the Phone app, press the three dot's -> Settings and see if there is a WiFi Calling toggle, this is at the bottom of the list.
If WiFi Calling is not there, make sure you have the latest update installed.
Update via the following guide from Three themselves: (please add a :// after http and make sure there are no gaps as I am not yet allowed to post links): http support.three.co.uk/SRVS/CGI-BIN/WEBISAPI.dll/,/?New,Kb=Mobile,Ts=Mobile,T=Device,varset_pid=40031,varset_cid=40041,Case=EXT(EM114337)

I've literally just switched from BTU to H3G and WiFi calling appeared instantly during setup. I did have to use CSC rather than HOME_CSC, as the latter caused Odin to fail first time around. I have also confirmed WiFi calling and texts are working, which is a huge plus as the lab in which I work seems to block all mobile signal!

Did installing H3G also enable VoLTE?
Cheers

Thanks for the quick replies everyone! Wifi calling is enabled in my account (it worked on my iphone) but the wifi calling option is not there at all. (I've checked all guides, including the 3 dots then going into phone settings) I know there is an app but it is horrifc, calls often don't come through at all, the app requires a persistent notification and is a major battery drain. @goRt @foo25 - > did you guys follow a guide for flashing three firmware? Do you know of any way to avoid the carrier bloat / sim lock?
Thanks all!

I've just flashed the three firmware from the Samsung version. After flashing, inbuilt Wi-Fi calling just worked. Wi-Fi calling toggle also appeared in phone- 3dots- settings menu. 800mz band 20 LTE also started working after switching firmware which means an extra bar or two when band 3 LTE signal is low.
The only downside I could see is the three UK splash screen on boot. I haven't noticed any extra bloat apart from the three likes app which I uninstalled straight away.
The phone is not SIM locked by flashing the carrier firmware.

NGbod said:
I've just flashed the three firmware from the Samsung version. After flashing, inbuilt Wi-Fi calling just worked. Wi-Fi calling toggle also appeared in phone- 3dots- settings menu. 800mz band 20 LTE also started working after switching firmware which means an extra bar or two when band 3 LTE signal is low.
The only downside I could see is the three UK splash screen on boot. I haven't noticed any extra bloat apart from the three likes app which I uninstalled straight away.
The phone is not SIM locked by flashing the carrier firmware.
Click to expand...
Click to collapse
Sounds good!
Did you follow a guide? If so do you have a link?
Thanks

stewartie4 said:
Sounds good!
Did you follow a guide? If so do you have a link?
Thanks
Click to expand...
Click to collapse
I didn't follow a guide but there are plenty around for flashing stock firmware on the S8 or S8+.
I just downloaded the latest version of Odin, and then the latest three.uk firmware from Samobile. I unzipped the firmware then loaded each of the components into the relevant Odin section ie. CP into CP section AP into AP section etc. I made the mistake of loading the 'CP Home' firmware into the CP section of Odin which caused the flash to fail which required use of Samsung emergency recovery procedure. I did that three times before trying loading 'CP' part of firmware into CP part of Odin which worked fine.

stewartie4 said:
Sounds good!
Did you follow a guide? If so do you have a link?
Thanks
Click to expand...
Click to collapse
*Download latest odin
*download desired firmware. (samobile) and extract it.
*go to settings>about device>software info>tap build number 7 times until developer options enabled.
*go to developer options and enable USB debugging and OEM unlock.
*plug phone into pc and let it install the drivers.
*turn off phone and boot to download mode.
*open odin and click AP. Insert the firmware you just downloaded.
*odin options should be: auto reboot checked, F reset time checked, repartition UNCHECKED.
*connect phone to odin and it will say added. COM box will turn blue. Just click start and let it do it's thing.
The first boot up can take a short while.

Thanks to everyone for the detailed replies.
One more question: I use secure folder and plan to use android pay. My colleague told me that flashing a new firmware will trip knox which will render these features unusable.
Will flashing the official 3 firmware do this? I'm only flashing to get a feature as advertised (there's a lot to be said for iPhone's just "working" )
Thanks

stewartie4 said:
Thanks to everyone for the detailed replies.
One more question: I use secure folder and plan to use android pay. My colleague told me that flashing a new firmware will trip knox which will render these features unusable.
Will flashing the official 3 firmware do this? I'm only flashing to get a feature as advertised (there's a lot to be said for iPhone's just "working" )
Thanks
Click to expand...
Click to collapse
Aslong as you flash official samsung firmware then knox will not be triped as its signed by samsung. Knox only trips when flashing twrp, root or any custom roms.
Before you start, do you have the option for wifi calling in phone>settings right at the bottom?

Like this

Hi all i have flashed my btu s8 to h3g and i also have the wifi option in the menu and it works great, however i can't find the volte option anywhere and i have never yet seen the symbols for it on my status bar.
When i had my old btu s4 i also flashed that to h3g and i remember the volte symbols showed up in the status bar.
So do i need to do anthing to activate volte?

CapricornDog said:
Hi all i have flashed my btu s8 to h3g and i also have the wifi option in the menu and it works great, however i can't find the volte option anywhere and i have never yet seen the symbols for it on my status bar.
When i had my old btu s4 i also flashed that to h3g and i remember the volte symbols showed up in the status bar.
So do i need to do anthing to activate volte?
Click to expand...
Click to collapse
Hi there,
There is no option for volte, if your network supports it then it will automatically be on where ever you have 4G signal. There is no option in settings but the icon looks like in the screenshot

G900T

Hello,
I have purchased a refurbished and unlocked 900t to use in New Zealand and having some following issuses,
Only operates on 4g and wont change to other data,
Hotspot wont turn on,
There is no Emergancy alarts.
Running on the telecom network.
Do I need to flash In a 900i rom with 900t bootloader
Or are There other fixes I can do

nope all over that, and if i wasn't bored, i wouldn't bother to read the hover text and try to help.
step one: fix your title. when asking for help, use a descriptive title like at least "SM-G900T issues with NZ carrier-name-here"
step two through more: easiest steps are make sure
* your sm-g900t has the final official firmware update from t-mobile.
* you have the current APN settings for your carrier entered in that device.
* verify general usability on your carrier network (what bands do they use?).
if that works okay, then install LOS 15.1 for a more up to date experience. although i noticed an odd behavior in LOS on that device lately around hotspot only being available to turn on when not in airplane mode (unlike wifi and bluetooth which turn on just fine from airplane mode).
if the device does not work after following the easy steps, then only the more involved ones are left with installing leaked tools to unlock LTE bands and are a bit tricky to "calculate" safely. for me it only worked with stock rom and failed to work with open source tool, so had to use leaked tool, similar to situation with heimdall never worked for me and leaked odin always does.
hope that helps, and remember that google is your big brother friend, so try duckduckgo instead.

S8 Active SM G892U, was Sprint, unlocked and on T-Mobile. Sprint Update broke Volte

Hi,
I have a Samsung S8 Active G892U which I bought used as an unlocked phone. It's clear it was originally a Sprint phone, but I have been using it with no problems on T-Mobile USA. It was running firmware G892USQS3BRI1 until today
Today I was prompted to install the latest software update ( G892USQS3BSA1 - this was clearly a Sprint update; it appears my phone is still getting Sprint updates, which makes sense, as it has Sprint firmware).
There was a warning on the Software update screen that the update would stop Volte working, and I would therefore no longer be able to access data while in a phone call. I (foolishly!!) assumed this would not affect me as I was on T-Mobile. I regularly use data while on the phone, so I know there was no issue with this previously.
The upgrade has completed, and I can no use data while making a call (I am in a LTE area at the moment). There is no sign of any option to enable or disable Volte anywhere in the settings menus
I did try going into Settings->Connections->Mobile Networks and changing Network Mode from "Automatic" to "LTE/CMDA." (as various forums indicated that doing that would provide a menu where I could re-enable volte)
This made the situation worse - I could no longer make calls. I have changed back to 'Automatic' , and can make calls again, but still loose data connectivity when making a call.
Is there any way I can restore my previous ability to use data while calling?
I am wondering:
a) If there is a way to renable Volte without reflashing the phone (that would be preferred)
b) If I do flash the phone, what would be the best firmware to go to - Sprint (presumably the previous version), T-Mobile or something custom (I'm clearly concerned about bricking the phone here)
c) It's several years since I've found myself re-flashing a phone - I see lots of references to "Odin" as the tool to use - is that correct, and could someone point me to the best guide on using it?
Thanks in advance..

You can flash the Sprint latest firmware over the current firmware and I think that should do the trick because I did it and so far so good but proceed with caution I have no experience in dirty flashing but as long as you just stick to the AP file and don't load the bootloader etc I think you should be safe from bricking because as far as I know when the boot loader is gone you can't repair anything

Unlocked Pixel 4 - WiFi calling on Verizon network

Hello! I have Pixel 4 Google edition, bootloader is unlocked, phone is routed. I cannot enable WiFi calling on Verizon network. There is a switch to enable it, bit it does not work. After long troubleshooting with Verizon I was told that unlocked Pixels do not support WiFi calling on Verizon network. They told that I need Verizon ROM to use it. They told that Google edition Pixel 4 does not have that exact piece of software for WiFi calling implementation on Verizon network.
Is there a patch I can flash to enable it? Or can I install Verizon ROM and keep my bootloader unlocked (link to the procedure will be appreciated!). Thank you.

fiodorpugach said:
Hello! I have Pixel 4 Google edition, bootloader is unlocked, phone is routed. I cannot enable WiFi calling on Verizon network. There is a switch to enable it, bit it does not work. After long troubleshooting with Verizon I was told that unlocked Pixels do not support WiFi calling on Verizon network. They told that I need Verizon ROM to use it. They told that Google edition Pixel 4 does not have that exact piece of software for WiFi calling implementation on Verizon network.
Is there a patch I can flash to enable it? Or can I install Verizon ROM and keep my bootloader unlocked (link to the procedure will be appreciated!). Thank you.
Click to expand...
Click to collapse
Please help!

Hmm, that doesn't seem right. I have a Pixel 4 which I'm pretty sure was the Google Edition. I can't be 100% sure since I bought it secondhand, but the seller said it was, and the bootloader is unlockable.
I'm able to enable the WiFi Calling switch, and I see on the lock screen my carrier label has changed to "Verizon WiFi Calling".
I'd recommend trying to flash the factory ROM from Google's site. I just used the current latest on mine, the 12.1.0 with SHA256 checksum of 0138b22040a493223b621fffe1f1d288d307c67524432805f674be05925c3580. You should be able to do this with the bootloader locked. The process is to install adb and fastboot.
You can try using the "Flash" button on that site to use the "Android Flash Tool", which should guide you through the process, though I've never tried that myself. If you want to do it manually, you can use the "Link" link to download the stock ROM as a zip, then extract the zip and run either ".\flash-all.bat" (for Windows) or "./flash-all.sh" (Mac or Linux). That assumes you have fastboot installed. If you don't already have those, you need to install them from here: https://developer.android.com/studio/releases/platform-tools

Thank you phantomsniper773 for your reply! I already have the latest 12.1.0 (SP2A.220405.003, Apr 2022), and I already tried to re-flash it, but it did not help. I also requested the brand new SIM card, and that did not help also. I have Wi-Fi calling switch, but when I try to enable it, it shows 'This will take a few moments', then in a minute or two 'Unable to activate Wi-Fi calling, please try again later'. I also found on-line similar complaints about Verizon Wi-Fi calling on Pixels. And that happens only on Verizon. With T-Mobile SIM card it has Wi-Fi calling enabled by default, and it works just fine! Can you please check yours Pixel 4 Baseband version (Settings - About Phone - Android version - Baseband version)? Mine is g8150-00123-220122-B-8106568. Thank you!