I want to try and enable VoLTE and wifi calling on Three uk on a J8110 as the signal is marginal in the two locations I'd like to use the phone from and coming from a samsung S7, I can see that the phones a few db's down on signal to start off with, so I really need the VoLTE or wifi to make the phone useful to me.
Now under this thread:
https://forum.xda-developers.com/xperia-1/help/google-dialer-volte-t3975441
They say they managed to get VoLTE going using root.
1. Root
2. File Manager with root support
3. Go to /oem/modem-config
4. Delete "anysim" folder
5. Rename "S9033.1" to "anysim"
6. Go here " https://forum.xda-developers.com/showpost.php?p=80231731&postcount=395" and download "VoEnabler.zip" From the Google Drive link
7. Put "VoEnabler.zip" onto your device and install via Magisk and reboot.
8. You should now be able to use VoLTE and VoWiFi.
Click to expand...
Click to collapse
So my three questions are;
Is this likely to work? e.g allow VoLTE and maybe wifi calling
Will it break safetynet by rooting the phone? (as I use internet banking)
Will it break anything else like DRM keys.
I see there appears to be multiple rooting options for Android these days if I can do the above is there a particular rooting method thats more likely to preserve the safetynet compatibility?
And maybe the DRM keys.
As I'm only interested in Enabling VoLTE and maybe wifi calling.
As an aside to that I see in this thread, https://forum.xda-developers.com/xperia-1/help/enable-volte-ee-uk-t3958112/page3
That some people on EE have got VoLTE working without anything special is this just because EE is just a network sl*t and just allow anyone on there system?
Best Regards
Dave Webster
webstaff said:
I want to try and enable VoLTE and wifi calling on Three uk on a J8110 as the signal is marginal in the two locations I'd like to use the phone from and coming from a samsung S7, I can see that the phones a few db's down on signal to start off with, so I really need the VoLTE or wifi to make the phone useful to me.
Now under this thread:
https://forum.xda-developers.com/xperia-1/help/google-dialer-volte-t3975441
They say they managed to get VoLTE going using root.
So my three questions are;
Is this likely to work? e.g allow VoLTE and maybe wifi calling
Will it break safetynet by rooting the phone? (as I use internet banking)
Will it break anything else like DRM keys.
I see there appears to be multiple rooting options for Android these days if I can do the above is there a particular rooting method thats more likely to preserve the safetynet compatibility?
And maybe the DRM keys.
As I'm only interested in Enabling VoLTE and maybe wifi calling.
As an aside to that I see in this thread, https://forum.xda-developers.com/xperia-1/help/enable-volte-ee-uk-t3958112/page3
That some people on EE have got VoLTE working without anything special is this just because EE is just a network sl*t and just allow anyone on there system?
Best Regards
Dave Webster
Click to expand...
Click to collapse
If you're on the Customized UK firmware, VoLTE should work by default.
I have the Customized UK firmware downloaded and I just checked, and it does include the required MBN file for VoLTE on H3G in UK. I am on the Dual SIM J9110 however, but I reckon it should be the same on the single SIM J8110 as well.
Yes, rooting will break SafetyNet on the Xperia 1. Magisk Hide works on some banking apps, but some of still fail to work once the bootloader is unlocked.
You will lose DRM keys, but from what I've heard, they are restored if you re-lock the bootloader.
MeltdownSpectre said:
If you're on the Customized UK firmware, VoLTE should work by default.
I have the Customized UK firmware downloaded and I just checked, and it does include the required MBN file for VoLTE on H3G in UK. I am on the Dual SIM J9110 however, but I reckon it should be the same on the single SIM J8110 as well.
Yes, rooting will break SafetyNet on the Xperia 1. Magisk Hide works on some banking apps, but some of still fail to work once the bootloader is unlocked.
You will lose DRM keys, but from what I've heard, they are restored if you re-lock the bootloader.
Click to expand...
Click to collapse
Yeah can confirm its not working on three uk, as other have already said in other threads..
*#*#4636#*#* > Phone info > VoLTE provisioned is grayed out.
Also cannot access three on the 800mhz LTE band 20
TBH three when I spoke to them just wiped there hands of the issue and said we don't sell the phone so speak to sony.
So much for industry standards.
webstaff said:
Yeah can confirm its not working on three uk, as other have already said in other threads..
*#*#4636#*#* > Phone info > VoLTE provisioned is grayed out.
Also cannot access three on the 800mhz LTE band 20
TBH three when I spoke to them just wiped there hands of the issue and said we don't sell the phone so speak to sony.
So much for industry standards.
Click to expand...
Click to collapse
You could try the method that enables the VoLTE toggle. In theory it should work with just that because the required files for IMS registration to work are already included in the modem for the Xperia 1.
why not just flashing another FW before losing DRM keys while rooting
we had a user he used a non European Market Xperia 1
no option for voLTE or Wificalling
after flashing the European FW everything was working just fine for him without any kind of rooting
I have flashed South East Asian (SEA) on mine and it has option for the VoLTE in the Network & internet > Mobile Network
It has Enable VoLTE and it can be toggled on and off. (although we don't have the VoLTE here )
If they are already providing VoLTE. Flash SEA firmware.
Related
I have T-Mobile in the US, and they recently got rid of one of the bands my phone was relying heavily on, so I want to be able to do calls over wi-fi and VoLTE which is not currently a feature with the international firmware I have. Since the Z5 Compact hardware technically has the capability to do this with other carriers using the EE firmware, and the XZ1 Compact is specifically able to do this with T-Mobile with the US firmware, is there a way to either flash just the bits I need or root and install the whole XZ1 Compact ROM on my Z5 Compact?
Sorry if this is a dumb question, I've been reading about how folks buying the XZ1 Compact are flashing bits and pieces to get wi-fi calling and VoLTE working with the fingerprint reader (normally disabled in the US version), and thought if there's a trick I can do with my existing phone it might save me $500.
Z5 Compact stock rom already have VoLTE and VoWiFi function, but the option only appear if the network supports it, but probably not on the us firmware?
gspbeetle said:
Z5 Compact stock rom already have VoLTE and VoWiFi function, but the option only appear if the network supports it, but probably not on the us firmware?
Click to expand...
Click to collapse
I have Hong Kong firmware that came with the phone. T-Mobile doesn't support the phone here in the US, but I did notice that there are firmware versions (Czech, Austrian, a couple others) that are T-Mobile branded. Is it worth a try to flash one of those (assuming it does include VoLTE), or for this purpose, would T-Mobile in another country be considered another carrier?
T-Mobile here in the US seems to be heading toward 100% VoLTE with only one 2G band left in my area. However, at least in the US, T-Mobile has not certified the Z5 Compact for VoLTE. I think the only Sony phone they've certified is the new XZ1 Compact. Does that mean I'm out of luck, or is there some kind of work-around?
I also have this issue, but I'm more of a noob to this than most people here, including the OP. I have a few fundamental (probably stupid) questions:
bokononisidore said:
I have T-Mobile in the US, and they recently got rid of one of the bands my phone was relying heavily on, so I want to be able to do calls over wi-fi and VoLTE which is not currently a feature with the international firmware I have.
Click to expand...
Click to collapse
1.) How do you know this? How do you track what band(s) your phone is using?
bokononisidore said:
T-Mobile here in the US seems to be heading toward 100% VoLTE with only one 2G band left in my area. ?
Click to expand...
Click to collapse
1.a.) Again, how do you know that there's only that one band left?
bokononisidore said:
I have Hong Kong firmware that came with the phone.
Click to expand...
Click to collapse
2.) How can I check exactly what firmware I have? I got an international version when I ordered it from Amazon, so I didn't even have to flash anything to enable the fingerprint sensor. I also know it was from a Spanish country because everything was in Spanish when I booted it for the first time. But how do I know verify which version it is exactly?
Also, OP, did you ever resolve this?
I don't use forums too much, so I have a feeling I'm going to be commenting here within the quote. Sorry about that. I hope this is helpful.
fr0zensphere said:
I also have this issue, but I'm more of a noob to this than most people here, including the OP. I have a few fundamental (probably stupid) questions:
1.) How do you know this?
I called T-mobile, and this is what they told me. In fact, it was so bad for their customers in my area that they were offering a special deal on new phones just to people in my service area.
How do you track what band(s) your phone is using?
I can't remember the code I used, but google "hidden codes xz1 compact" and you'll find a service code to see the settings. Be careful not to use one that will reset the phone.
1.a.) Again, how do you know that there's only that one band left?
Both through speaking with their tech support and reading their press releases online.
2.) How can I check exactly what firmware I have? I got an international version when I ordered it from Amazon, so I didn't even have to flash anything to enable the fingerprint sensor. I also know it was from a Spanish country because everything was in Spanish when I booted it for the first time. But how do I know verify which version it is exactly?
This is going to be in one of those service codes.
Also, OP, did you ever resolve this?
Click to expand...
Click to collapse
I ended up buying an XZ1 Compact and flashed the firmware for the international version with one portion using the US firmware. What I originally wanted to do couldn't be done with the old phone.
I made myself a file of notes back the first time I was taking care of all of this. These are not my words, but direct quotes from various forums, but I didn't keep all the sources so I'm afraid I'm unable to cite them properly. However, before embarking on this process, I should tell you that I haven't had any push updates since I did this over a year ago, and I haven't figured out how to repeat the process to update with new firmware. Good luck!
You can probably try googling some phrases from these in quotes to find the original sources:
I tried just those two files and didn't have any luck.
ETA - man, am I dumb! I accidentally was flashing the system_X-FLASH-ALL-C93B.sin and vendor_X-FLASH-ALL-C93B.sin files from the US firmware instead of the CE firmware! Once I used the correct files, it worked perfectly.
So to summarize (and definitely do at your own risk!)
0) I backed everything up.
1) I didn't load drivers because I had them.
2) I followed the directions at the link below to get xperifirm and newflasher, then used xperifirm to download the Xperia XZ1 poplar roms for G8432 Central Europe 1
3) I copied the two files listed above to my newflasher directory.
4) I shut down the phone, waited 5 seconds, then held down the volume down key and plugged it into my PC using a USB A to C cord.
5) I ran newflasher as administrator, and chose N when it asked if I wanted to load a driver
6) When newflasher told me I was done, I unplugged the phone and started it up.
The fingerprint scanner works, group texting works, and my system is showing the same signal strength!
See my screens in the prior 2 posts. It's really much easier than what you are describing. Download the Customized UK firmware from Xperifirm. Download the Customized US firmware from Xperifirm. Copy the system sin file and vendor sin file from UK firmware and replace the files in US firmware with the copied files. Flash the modified US firmware using newflasher tool. Bingo!
So I decided to take the plunge on this with the XZ1 Compact at least. Not only do I have the fingerprint sensor working, but also WiFi Calling and VoLTE on T-Mobile US.
I took the oem_X-FLASH-ALL-C93B.sin from the US Customized version, and overwrote the one included with the UK (Device is UK Model) version, and then proceeded to flash with Newflasher.
Everything seems to be working without issue. I couldn't possibly enjoy this phone more now.
I am being a bit lazy and will refer you to XZ1 Compact thread. pbarrette has done amazing job with figuring out all the bits and writing out how stuff works
Start reading from this post https://forum.xda-developers.com/sho...9&postcount=35
Most informative post is here https://forum.xda-developers.com/sho...&postcount=105
In summary, oem.sin from XZ1 Compact "Customized US" should be used to flash XZ1. All other *.sin etc files should be from XZ1 firmware (can use other region for fingerprint reader support).
Create folder caled 'partition', extract partition.zip into that folder and it will get flashed.
To put the phone in flash mode, you need to:
1] Power the phone off.
2] Press and hold the Volume Down Button.
3] While doing #2, plug the phone into your computer.
Device Manager should show an Unknown or Other device. Quite possibly the one above what you think is the right one.
It will have a device descriptor like this USB\VID_0FCE&PID_B00B in the "Details" tab.
Run newflasher and answer Y to the GordonGate driver.
It will exit after having dumped a zip file into the newflasher directory.
Unzip and install that driver for the device described above.
---
I know userdata.sin and fota-reset.ta is responsible for wiping userdata so its safe to delete these two files in case you need to keep userdata, but cust-reset.ta and master-reset.ta somebody need to try and let us know if these two files is also responsible for wiping userdata. The rest of ta files is ALWAYS recommended for flashing, don't skip it! Simlock.ta is by default skipped so you no need to delete it.
http://www.xperiablog.net/2018/01/2...-firmware-for-xperia-xz-premium-xz1-and-more/
https://forum.xda-developers.com/xperia-xz1/help/flashing-international-firmware-model-t3683552
maybe best description
A quick update since my last reply:
I mentioned not being able to repeat the process. Turns out, it's because I didn't have the driver installed, which is basically step one. So user error, not related to any risk or issue with having flashed the custom rom to the phone.
N920A AT&T (Required VoLTE or Root or Unlock Bootloader or Any Better Alternative)
Dear's
I have Samsung Galaxy Note 5 SM-N920A with Andriod nougat 7.0 (which U.S with AT&T). So basically i'm back to india. Now i want to use jio network sim card which only supports VoLTE.
I will post my questions in order, because since days i have been doing research and found nothing helpful.
1. I'm trying to use Jio network, which requires VoLTE, any patch or fix available?
2. Since i couldn't find patch tried another variant Rom which brings me to a problem of Bootloader by AT&T. Any way to unlock bootloader?
3. Now since i cannot find unlock bootloader i tried to go for root. Here goes with more issue there is no root. (Available if downgrade but would be stuck on some 5.1.1 also no way of downgrading). Any way to root?
4. Since no root i tried with many setting change at APN, *#*#4346#*#* (VoLTE wont get enabled), and so on. Nothing VoLTE shows up in settings. Any better option?
5. Wanted call recording since Jio 4G app is VoIP based call recording apps wont work with that. Any better suggestion if using Jio 4G Calling app with recording?
Hello everyone,
I'm a new user of XZ1 (SOV36) AU unlocked with JP rom 47.2.c.1.126
My wifi keeps getting disconnected randomly. Tried 2 different wifi connections and it is the same
I know it was a sony known bug. Is it not resolved on this rom? Is there any other Rom I can try without this bug? I noticed others are flashing global roms however they said the phone is not going to deep sleep and the battery life is shortened.
Please let know if you are aware of some tricks to reolved this.
PS: I enabled wifi verbose logging in Developer options and turned off mobile data always on.
Thanks guys!
bootloader unlock not possible so i can't disable NFC when I flash global rom. i guess I have no choice but to live with Japan rom
engineer000 said:
bootloader unlock not possible so i can't disable NFC when I flash global rom. i guess I have no choice but to live with Japan rom
Click to expand...
Click to collapse
I just got this phone today. AFAIK you have few options for debloating.
1. Use temporary root method
2. Flash AU rom by replacing the OEM file from a global rom (UK variants). This debloats it by not installing AU bloats.
gurangax said:
I just got this phone today. AFAIK you have few options for debloating.
1. Use temporary root method
2. Flash AU rom by replacing the OEM file from a global rom (UK variants). This debloats it by not installing AU bloats.
Click to expand...
Click to collapse
thanks for your response. my only problem is wifi keeps getting disconnected randomly and it is the reason why i wish to change to global rom. bloatware i can live with them. disabled and uninstalled other bloat without root
am I the only one who has wifi issues do you have the same version of rom as I have? 47.2.c.1.126
engineer000 said:
thanks for your response. my only problem is wifi keeps getting disconnected randomly and it is the reason why i wish to change to global rom. bloatware i can live with them. disabled and uninstalled other bloat without root
am I the only one who has wifi issues do you have the same version of rom as I have? 47.2.c.1.126
Click to expand...
Click to collapse
have same rom. no wifi issues. probably you need to change the wifi channel? are you using 2.4G or 5G wifi or does it happen in both. It doesn reconnect automatically after disconnect? maybe its related to the Acces Point wifi strength also
I'm near the router.
this is 5Ghz wifi. I'm trying to check with 2.4ghz, just can't update the one I am using now.
It reconnects automatically after disconnect, takes a couple of minutes. sometimes i need to manually connect in settings.
I'll observe it and will try with 2.4ghz
I think I have the same problem too. Disconnect too often and then the 5G Wifi disappeared for a while, while my other devices can still see 5G
But for me, it usally happens if you just rebooted your phone or if you go from home, connect to other wifi and go back home.
I tried reflashing and resetting my router and tweaking the settings correctly but nothing helped much. It's only my XZ1 that happens. 2G works perfectly but it's slow.
My firmware is 47.2.A.11.228
evildog1 said:
I think I have the same problem too. Disconnect too often and then the 5G Wifi disappeared for a while, while my other devices can still see 5G
But for me, it usally happens if you just rebooted your phone or if you go from home, connect to other wifi and go back home.
I tried reflashing and resetting my router and tweaking the settings correctly but nothing helped much. It's only my XZ1 that happens. 2G works perfectly but it's slow.
My firmware is 47.2.A.11.228
Click to expand...
Click to collapse
What is the original model of your XZ1? Mine is SOV36 originally and have been flashed with G8341 by the seller, with the bootloader which can't be unlocked. It has random reboot issue which has been fixed by uninstalling nfc modules, and debloated. I'm not having any issue with 5G or 2.4G wifi.
I only have problem with wifi on my Android Box which was fixed by changing the wifi channel on my router. The NFC module could be the reason interfering with the wifi signal or any of the inner parts. You can try disabling/uninstalling the nfc module from your phone and try again to see if the problem persists.
I uninstalled the nfc module from the ADB shell. Or you can just disable them also from ADB shell. Its not possible to disable it from the settings.
gurangax said:
What is the original model of your XZ1? Mine is SOV36 originally and have been flashed with G8341 by the seller, with the bootloader which can't be unlocked. It has random reboot issue which has been fixed by uninstalling nfc modules, and debloated. I'm not having any issue with 5G or 2.4G wifi.
I only have problem with wifi on my Android Box which was fixed by changing the wifi channel on my router. The NFC module could be the reason interfering with the wifi signal or any of the inner parts. You can try disabling/uninstalling the nfc module from your phone and try again to see if the problem persists.
I uninstalled the nfc module from the ADB shell. Or you can just disable them also from ADB shell. Its not possible to disable it from the settings.
Click to expand...
Click to collapse
Oh SOV36 is a japanese carrier model. Yeah carrier phone are normally not unlockable
Mine is G8341, normal phone and unlockable. Rooted with Magisk and debloated by disabling apps. Didn't want to uninstall completely to avoid bricking
Did another tweaking of router settings. I don't use NFC so i disabled it on settings and frozen them via Titanium backup and reboot. Seems working so far, no disconnect. Hope it works longer
evildog1 said:
Oh SOV36 is a japanese carrier model. Yeah carrier phone are normally not unlockable
Mine is G8341, normal phone and unlockable. Rooted with Magisk and debloated by disabling apps. Didn't want to uninstall completely to avoid bricking
Did another tweaking of router settings. I don't use NFC so i disabled it on settings and frozen them via Titanium backup and reboot. Seems working so far, no disconnect. Hope it works longer
Click to expand...
Click to collapse
SOV36 is unlockable, someone has already did it, but it involves paying a sum. I would like to know how he did it. And there is also someone who installed TWRP with root and LOS on a bootlocked phone. I don't know how he actually did it but I have an idea.
Also when you disabled nfc from settings, its not totally disabled. You can see that there are some nfc modules still running in the background and they need to be disabled completely using adb command for unrooted phones.
gurangax said:
SOV36 is unlockable, someone has already did it, but it involves paying a sum. I would like to know how he did it. And there is also someone who installed TWRP with root and LOS on a bootlocked phone. I don't know how he actually did it but I have an idea.
Also when you disabled nfc from settings, its not totally disabled. You can see that there are some nfc modules still running in the background and they need to be disabled completely using adb command for unrooted phones.
Click to expand...
Click to collapse
Alright
installing TWRP on a locked bootloader is possible since but would need rooted phone. We did it back then on Z3 compact
Downgrade to the lowest firmware with exploits, root, install TWRP and flash latest firmware via TWRP
cool. let me try your suggestions above and I'll let you know. maybe the nfc because it is the only difference to global version.
maybe my phone has some issues too. i have another japan phone xz2 from docomo and wifi works well. both jpn firmware and global flashed fimware.
evildog1 said:
Alright
installing TWRP on a locked bootloader is possible since but would need rooted phone. We did it back then on Z3 compact
Downgrade to the lowest firmware with exploits, root, install TWRP and flash latest firmware via TWRP
Click to expand...
Click to collapse
I would like to try this on my bootlocked SOV36. One thing I noted is from J4nn, he mentioned about setting OEM and another partition (can't recall) as read only or else it will trigger an error, I wonder which TWRP version has this set or must it be set/compiled manually. I would like to use any other custom roms just to test them especially android 10/11, although current global pie version has no problem only NFC is disabled which I don't use.
Found out that the bootloader can be unlocked by qunlock and need credit for unlocking, but if a custom firmware can be flashed without unlocking the bootloader then it is not needed.
---------- Post added at 04:23 PM ---------- Previous post was at 04:20 PM ----------
engineer000 said:
cool. let me try your suggestions above and I'll let you know. maybe the nfc because it is the only difference to global version.
maybe my phone has some issues too. i have another japan phone xz2 from docomo and wifi works well. both jpn firmware and global flashed fimware.
Click to expand...
Click to collapse
I think japanese NFC uses felica and osaifu keitai for NFC modules, I have these modules also on a S7 Edge Docomo version. There's no problem if you use japanese ROMs, problem will only be on firmwares with incompatible/modified NFC modules.
gurangax said:
I would like to try this on my bootlocked SOV36. One thing I noted is from J4nn, he mentioned about setting OEM and another partition (can't recall) as read only or else it will trigger an error, I wonder which TWRP version has this set or must it be set/compiled manually. I would like to use any other custom roms just to test them especially android 10/11, although current global pie version has no problem only NFC is disabled which I don't use.
Found out that the bootloader can be unlocked by qunlock and need credit for unlocking, but if a custom firmware can be flashed without unlocking the bootloader then it is not needed.
---------- Post added at 04:23 PM ---------- Previous post was at 04:20 PM ----------
I think japanese NFC uses felica and osaifu keitai for NFC modules, I have these modules also on a S7 Edge Docomo version. There's no problem if you use japanese ROMs, problem will only be on firmwares with incompatible/modified NFC modules.
Click to expand...
Click to collapse
I'll be fine with Global rom as long as there's no battery drain. Right now, I'm still using the latest AU firmware. It is fine, I just disabled some apps and uninstalled those that can be installed. Using Google Phone and Messages app makes it like a Global firmware.
The wifi is slow and disconnects randomly again after reboot, even I fully disabled NFC. Wifi 2G/5G still fast on other devices no problem
I know this thread is about SOV36, but i'm not sure if it has a difference with normal phone with nordic firmware
I think i'm gonna buy another phone now
gurangax said:
What is the original model of your XZ1? Mine is SOV36 originally and have been flashed with G8341 by the seller, with the bootloader which can't be unlocked. It has random reboot issue which has been fixed by uninstalling nfc modules, and debloated. I'm not having any issue with 5G or 2.4G wifi.
I only have problem with wifi on my Android Box which was fixed by changing the wifi channel on my router. The NFC module could be the reason interfering with the wifi signal or any of the inner parts. You can try disabling/uninstalling the nfc module from your phone and try again to see if the problem persists.
I uninstalled the nfc module from the ADB shell. Or you can just disable them also from ADB shell. Its not possible to disable it from the settings.
Click to expand...
Click to collapse
hello, i have xz2 japanese softbank version. can u tell me how to disable the nfc module via adb? i want to use global firmware and disable the nfc to prevent random reboot.
thanks before
elmaleek03 said:
hello, i have xz2 japanese softbank version. can u tell me how to disable the nfc module via adb? i want to use global firmware and disable the nfc to prevent random reboot.
thanks before
Click to expand...
Click to collapse
try this link https://forum.xda-developers.com/t/...n-with-adb-pie-47-2-c-1-126-non-root.4081391/
gurangax said:
try this link https://forum.xda-developers.com/t/...n-with-adb-pie-47-2-c-1-126-non-root.4081391/
Click to expand...
Click to collapse
thanks for the reply, unfortunately those command screwed up my device. i did it succesfully by just disabling the com.android.nfc through adb, reboot and no more nfc error in the logcat. deep sleep works well too
elmaleek03 said:
thanks for the reply, unfortunately those command screwed up my device. i did it succesfully by just disabling the com.android.nfc through adb, reboot and no more nfc error in the logcat. deep sleep works well too
Click to expand...
Click to collapse
yes you are suppose to just uninstall the nfc modules, the link is for xz1. its just for reference
For wifi random drops; flash via emma flash tool.
I had same issue whenever i flash stock via newFlasher.
Obligatory - This is my first post here, please go easy on me. If this is the wrong section please point me where I need to go.
Okay, I have been having issues getting IMS registration (for att) on my N20U (unbranded) Snapdragon. This is an issue because I don't receive most calls without VoLTE, and the service I am using is actually FirstNet. (An at&t service that provides priority cell tower access for first responders.) Who is also dropping legacy 3G and analogue calling at the end of the year.
The FN sim I was given would not change the network CSC to ATT like it should have in order to work properly.
I was able to get to the manual CSC change menu through the dialer code with a TFW-att sim card (yes, while on oneUI 3.0). I suppose the menu is locked out when other csc's are active.
This allowed me to force change to ATT's csc, then place my FN sim in the phone. The kicker? I had to toggle "do not auto update CSC based on sim data" in the menu to get this method to stick.
Things are grand, working fine, but i got curious as to what options the other csc's had to offer. So i start flipping through the list and end up landing on.....you guessed it..... XAA.
Without thinking about it, i ran it, the phone rebooted, and now im screwed. Flashed the ATT rom with Odin- no change. Factory reset? No change. I messed up BIG.
Finale / TLDR
If you didn't get what just happened there, I used a specific sim card to enable a CSC a menu that uncle sammy does not want you playing with. Proceeded to disable auto CSC changing by SIM, then walked back into a CSC that does not allow me to open said menu. Thus preventing my phone from working fully on ANY NETWORK ever again. With root impossible...
Side notes that failed: Tried fac reset/ tried firmware flash/ tried samkey (no android 11 support)/ tried force change from network side. I hope im not out of options?
****you2dude said:
Obligatory - This is my first post here, please go easy on me.
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Please check your PM inbox ASAP. Thank you.
-Regards: Badger50
Hello,
I have an unlocked Xfinity Mobile device that I bought from Xfinity Mobile. This means that I purchased from them and then paid off the phone in full, allowing it to be unlocked. I can plug in other SIM cards (such as atnt) and have them work fine, which means that my phone is 100% unlocked. However, because Xfinity Mobile is a b*tch, APN settings are still locked for some reason, even when my phone is unlocked. I believe it has to do with the fact that carrier-specific software was installed when I first installed my Xfinity Mobile SIM card. I need to access APN settings to ensure my phone gets full functionality from my new carrier, Visible, which doesn't install any carrier-specific software because it's very new or something like that. Plus, Xfinity Mobile's carrier software doesn't allow me to manually disable 5G functionality (select what bands or whatever I want to use), which I may want to do at some point. I also think the Xfinity Mobile boot load screen is hideous, and I would like to get rid of it.
After searching around, I found out that the best way to do this was to flash U1 software to my phone using Odin with the carrier code XAA or something like that to revert my phone to the original Samsung-bought factory-unlocked state. However, after searching around some more, I found out that to do this, I would have to factory reset my phone and then re-import my apps, data, images, etc., with Smart Switch, which doesn't preserve per-app data. I have way too many apps requiring logins to dig out the passwords for each app and log in again, so I would prefer not to factory reset my phone.
Searching around some more, I found out that it was possible to retain data when switching from U to U1 by selecting the "Home CSC" file instead of the non-"Home CSC" file when flashing with Odin in the respective area where it asks for the CSC file, but this would result in a "Dirty flash" which could brick my phone. Of course, I don't want to brick my phone, so this is kind of a no-go. But, some people did say that using the "Home CSC" wouldn't affect the phone that much, and it was safe to do, but I don't want to put the safety of my shiny phone on the line.
Tl;dr: I want to go from my carrier-locked U firmware to U1 unlocked XAA without losing my data / requiring a restore with Smart Switch. Is this possible?
Both the u and u1 lost the ability to switch lte bands in the June and July updates. The last one that allows changing lte bands is the may update (cvdb etc)
How To LOCK LTE Band Without Root on SAMSUNG Device
This method is specifically for Samsung Galaxy. Because the default hiddennetwork system application is available. for devices with other brands and types, I haven't tried it. Please follow the following methods: 1. You need to install this app...
forum.xda-developers.com
robnitro said:
Both the u and u1 lost the ability to switch lte bands in the June and July updates. The last one that allows changing lte bands is the may update (cvdb etc)
How To LOCK LTE Band Without Root on SAMSUNG Device
This method is specifically for Samsung Galaxy. Because the default hiddennetwork system application is available. for devices with other brands and types, I haven't tried it. Please follow the following methods: 1. You need to install this app...
forum.xda-developers.com
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Well, I still want to flash U1. Would flashing U1 Home_CSC bootloop my phone
garailcat said:
Well, I still want to flash U1. Would flashing U1 Home_CSC bootloop my phone
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So then the phone is NOT giving you the popup prompt to reboot to apply new carrier settings, when you insert a different SIM? And it still shows all of the Xfinity bloat and their configuration?
iBowToAndroid said:
So then the phone is NOT giving you the popup prompt to reboot to apply new carrier settings, when you insert a different SIM? And it still shows all of the Xfinity bloat and their configuration?
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No, if I put in an ATNT SIM, it will switch to ATNT software and install its respective bloat.
However, my current service provider, Visible, does not have its carrier software/firmware. Therefore it would make no sense for me to use Visible on Xfinity Mobile carrier software.
garailcat said:
No, if I put in an ATNT SIM, it will switch to ATNT software and install its respective bloat.
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So then can you leave it on AT&T bloat, since that firmware allows APN change/add...?
iBowToAndroid said:
So then can you leave it on AT&T bloat, since that firmware allows APN change/add...?
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No.
I'd rather blow my brains out than have 300 useless apps. Also, the actual data indicator icon thing looks ugly as all hell.
Xfinity mobile is more stock than the other bigger providers regarding bloat and other things; it's just that it doesn't allow APN editing, which is incredibly annoying.