I have tried several US variants (NAO_US and USC_US) of LG V40 firmwares but could not find one that has VoLTE and VoWiFi enabled.
How do you guys get VoLTE and VoWiFi to work? The features worked with AT&T firmware but I can't go back to it anymore.
Hi I got VoLTE working but not VoWiFi, I used a 'UA' KDZ version 20f but i cant remember which carrier. I had previously gone to us unlocked and european versions but these didn't work. Sorry it's not more specific.
I have got both VoLTE and VoWiFi to work on Cricket network. Here is a brief summary of the fun and painful journey.
1. Unlock bootloader then install TWRP and Magisk.
2. Hex edit boot_a partition to turn off verity check. (This step was necessary before step #3 so the /OEM directory can be modified)
3. Edit XML and config files under /OEM/OP/OPEN_US with references to VoLTE and VoWiFi
4. Add new entries to /OEM/OP/OPEN_US/CONFIG/vo_config.XML file with MCC and MNC values of Cricket Wireless. LG totally left out Cricket in the XML file. For larger providers, the entries are there but most have VoLTE set to on and VoWiFi disabled.
No idea why LG would make it so difficult to turn on VoLTE and VoWiFi. With the toggles hidden and default set to off, gaining root access was the only solution.
Hey guys, I've got a quick question, how do I figure out which LTE bands are unlocked my phone, would there be a hardware reason why none of the stated bands on the spec list would work, I'm particularly interested in getting band 3 to work
piemanny said:
Hey guys, I've got a quick question, how do I figure out which LTE bands are unlocked my phone, would there be a hardware reason why none of the stated bands on the spec list would work, I'm particularly interested in getting band 3 to work
Click to expand...
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Which version do you have? This link will tell you the LTE bands that are enabled. Click on the model of your variant.
https://www.gsmarena.com/lg_v40_thinq-9300.php
Is band 3 available and active in your area?
One way to confirm it is to download "LTE Discovery" app. It has an LTE log that will show you all the towers your phone have connected to.
Related
I'm novice to the whole rooting scene so please cope with me.
I found a good deal on almost new Lg v40 from a Sprint user.
We'll meet at Sprint store to verify device is paid off and unlock it.
Once Sprint unlocks it, can I just use this device on Tmobile with my Tmobile sim and will it have band 71 or do I need to have Tmobile fw on it to open band 71 ?
Lg website lists in specs for sprint model (model LM-V405UA) as having band 71.
Can anyone confirm ?
rdx2019 said:
I'm novice to the whole rooting scene so please cope with me.
I found a good deal on almost new Lg v40 from a Sprint user.
We'll meet at Sprint store to verify device is paid off and unlock it.
Once Sprint unlocks it, can I just use this device on Tmobile with my Tmobile sim and will it have band 71 or do I need to have Tmobile fw on it to open band 71 ?
Lg website lists in specs for sprint model (model LM-V405UA) as having band 71.
Can anyone confirm ?
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I don't think Sprint uses the same LTE bands.
Mine works just fine on T-mobile as of a week or so ago when i got it .Mine is the Sprint version full network & Factory UNLOCKED.
To make sure your GSM unlocked go to system/system-updates--
Then look in the list UICC Unlock it should say -----( The Device is unlocked for any SIM card )
zxhwk said:
Mine works just fine on T-mobile as of a week or so ago when i got it .Mine is the Sprint version full network & Factory UNLOCKED.
To make sure your GSM unlocked go to system/system-updates--
Then look in the list UICC Unlock it should say -----( The Device is unlocked for any SIM card )
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Click to collapse
*Edit - confirmed band 71 is only active in the tmo model, I went with it vs an unlocked variant*
Are you able to use band 71/600mhz? I've seen comments suggesting band 71 isn't enabled in any other model besides tmo, even though specs show all variants having the same band capability.
I'm in the same boat, on tmo & tempted by the lower priced unlocked variant, but would like to confirm band 71 is usable before ordering one.
my sprint v40 was working on t mobile for about two weeks then it went dead and lost its network settings now i cant seem to get it back on tmobile some1 help ! i did the uicc unlock and enable oem unlock
brian9291 said:
my sprint v40 was working on t mobile for about two weeks then it went dead and lost its network settings now i cant seem to get it back on tmobile some1 help ! i did the uicc unlock and enable oem unlock
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Click to collapse
OEM unlock is specifically for bootloader unlocking not network unlocking..
I will be able to report back in about a week whether band 71 works.
I bought the Sprint version of the V40.
I am on Sprint now.
I am crossflashed to US.
I am switching to T-Mobile at the end of the week.
I live in a Band 71 market.
[NG]Owner
So I have switched to TMobile.
I used the hidden Service Menu ( *#546368#*405# ) to force the phone to Band 71. It did not connect to Band 71, instead to Band 2, as reported by LTE Discovery.
I then used the hidden Service Menu ( *#546368#*405# ) to force the phone to Band 12. It did connect to Band 12 as reported by LTE Discovery.
So either band 71 doesn't work, or I don't have access to Band 71 from my house. I have heard that there are confirmed Band 71 sightings in Kansas City, so I will go there to try. Once I do I'll report back.
Both VoWiFi and VoLTE are listed as provisioned.
[NG]Owner
Can somebody also confirm band 71 compatibility? I'm looking to get a Sprint V40 but I'm not sure if cross flashing will enable band 71. Also can somebody confirm if services such as VoLTE, HD Voice, and Wi-Fi calling will work on a cross flashed device? Also how exactly do you force gsm bands if it gives you a checklist? Do you just remove all the bands but one? Also will crossflashing to unlocked make OTA stop working? If so, why does it not work?
So I have to amend my previous post:
I can confirm the following:
Using the Hidden Service Menu from this post, and several apps out of the Play store, my phone sees T-Mobile bands 2, 4, 12 and 71 towers. And I have successfully been connected to a Band 71 tower.
Oddly enough, LTE Discovery still reports the connection as a different band. So I'm going with the Hidden Service Menu as definitive.
[NG]Owner
NGOwner said:
So I have to amend my previous post:
I can confirm the following:
Using the Hidden Service Menu from this post, and several apps out of the Play store, my phone sees T-Mobile bands 2, 4, 12 and 71 towers. And I have successfully been connected to a Band 71 tower.
Oddly enough, LTE Discovery still reports the connection as a different band. So I'm going with the Hidden Service Menu as definitive.
[NG]Owner
Click to expand...
Click to collapse
After you cross flashed, do services like VoLTE, HD Voice, and Wi-Fi calling still work?
---------- Post added at 09:59 PM ---------- Previous post was at 09:52 PM ----------
NGOwner said:
So I have to amend my previous post:
I can confirm the following:
Using the Hidden Service Menu from this post, and several apps out of the Play store, my phone sees T-Mobile bands 2, 4, 12 and 71 towers. And I have successfully been connected to a Band 71 tower.
Oddly enough, LTE Discovery still reports the connection as a different band. So I'm going with the Hidden Service Menu as definitive.
[NG]Owner
Click to expand...
Click to collapse
Also how were you able to open that hidden menu. I entered in the code and nothing happens.
jimmysofat6864 said:
After you cross flashed, do services like VoLTE, HD Voice, and Wi-Fi calling still work?
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Click to collapse
Not sure what you mean by still. I was on Sprint. Received Sprint v40. Immediately crossflashed to US version. Used phone on Sprint. Migrated to T-Mobile. VoLTE, HD Voice, and Wi-Fi calling work. That was the sequence. I have no idea if Sprint has those features or if they work on Sprint. But on T-Mobile with a cross flashed to US version v40, those services work just fine for me.
Now if you are thinking of crossflashing a T-Mobile v40, stop right now. You'll brick it. There is nothing you can do to a TMo v40.
jimmysofat6864 said:
Also how were you able to open that hidden menu. I entered in the code and nothing happens.
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Click to collapse
I assume you are also entering it into the phone dialer. I type in the code, and the hidden service menu appears. If it's not working for you, I don't know why not.
[NG]Owner
I was referring to a sprint model phone but was nice to know everything works. Just have to wait and see if OTA updates work.
Anyone have the lg v40 running on at&t? surprisingly i have no options under mobile networking. I can only enable international data roaming and setup new apn. Usually i'd expect to see settings allowing me to change the bands.
Alibaba0101 said:
Anyone have the lg v40 running on at&t? surprisingly i have no options under mobile networking. I can only enable international data roaming and setup new apn. Usually i'd expect to see settings allowing me to change the bands.
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Click to collapse
Everything is auto- , the phone I have is locked to att and I guess the only way to change that is to unlock the phone.
mtyler7807 said:
Everything is auto- , the phone I have is locked to att and I guess the only way to change that is to unlock the phone.
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thx, i flashed the unlocked firmware and still the same thing. looks like it keys everything off of the sim.
Alibaba0101 said:
thx, i flashed the unlocked firmware and still the same thing. looks like it keys everything off of the sim.
Click to expand...
Click to collapse
It bounces off 2 things, the phone's props and the network being detected. Using the unlocked does not enable settings if it's not natively supported by the carrier contrary to popular belief. That was true on older versions of android. Newer ones relies on multiple configs to decide what options you get to see or not. In most cases, if the phone model is not what is expected for a particular network, it will default to global roaming mode that has the least set of options. From what I've seen, this comes as a result of carriers requesting to have specifically designated models tailored to their service.
If you are rooted, you can tweak stuff in build.prop to have the phone switch carrier and regional modes.
Alibaba0101 said:
Anyone have the lg v40 running on at&t? surprisingly i have no options under mobile networking. I can only enable international data roaming and setup new apn. Usually i'd expect to see settings allowing me to change the bands.
Click to expand...
Click to collapse
root not needed:
1. for network mode, try dial *#*#4636#*#* and then phone information, this works on my v35 with tmo and att sim, you can also use a 3rd app called "network mode" which is a shortcut of the above, hope that works on v40 too.
2. for band selection, I use 277634#*# on v30(tmo unlocked) for both tmo and att sim; I use 277634#*# on v35 (both att unlock and usa unlock) for tmo sim; I use *#546368#*350# (need to dig into the menu to find band selection) on v35 (both att unlock and usa unlock) for att sim; hope either one of these two works for v40.
Hello guys,
Anyone with working Vowifi (working Volte is a sure thing) would you please provide me with your country, carrier name
I am trying to replace my mbn files to get Vowifi working
So far i was able to turn on Volte only using Vodafone UK mbns
Thanks.
No one got working Vowifi
VoWiFi is working fine were, BT Mobile (UK)
not VoWifi related but when you got VoLTE working, did your phone's IMS status change from "unregistered" to "registered" after modifying the qualcomm files?
I'm in the United States. I have AT&T. I've got wifi calling.
I have VoWiFi in the US on Google Fi.
Could anyone share their mbn files with us to try it out (you must have root)
Thanks
Eiad Ajam said:
Could anyone share their mbn files with us to try it out (you must have root)
Thanks
Click to expand...
Click to collapse
That would be awesome
Hi everyone,
Have a global version of X5 Pro.
Trying to make VoLTE and VoWIFI working on T-Mobile in US but no luck.
No toggles in SIM settings and toggles in Phone Info are grayed out.
Any ideas to activate it?
Same with me, I started another thread or two concerning this issue but I believe it has to do with T-Mobile's VoLTE/Wifi-calling provisioning relative to the Find X5 Pro's firmware?
Of course the phone supports VoLTE and WiFi-Calling, so I'm not sure why at least the latter won't work (or at least have a toggle). If you google 'how to enable WiFi calling', most people tell you to set (or re-set) your E911 address because it's a necessary feature of WiFi calling. Ive done this on the T-Mobile website AND with a support rep on the phone, but still no toggle to enable.
I haven't found anything about this outside of XDA so perhaps it's time to submit a ticket directly to Oppo.
Edit: could anyone from the EU/UK chime in on whether they have the toggle options for VoLTE/WiFi-calling? I think we need to identify whether the problem is based on region/carrier rather than the phone.
Pulled from a recent T-Mobile forum post about the same issue (but on multiple different phones):
"In order to enable WiFi calling from an unlocked phone, there appear to be several components which all need to align perfectly. The the phone must have the physical capability, obviously a WiFi antenna. It also seems to rely on VoLTE provisioned and WiFi calling provisioned abilities.
The former carrier must have unlocked the device and its IMEI for use on another carrier.
The current carrier must have enabled WiFi calling, and also configured an E911 address.
"Exactly! The firmware in the Sprint S8 is not compatible with T-Mobile’s WiFi Calling implementation. XDA might offer some work around through flashing or root, but through normal methods, WiFi Calling on such an old device that actually has carrier specific firmware isn’t going to work with a different carrier for those feature implementations. "
dipleg said:
Edit: could anyone from the EU/UK chime in on whether they have the toggle options for VoLTE/WiFi-calling? I think we need to identify whether the problem is based on region/carrier rather than the phone.
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Click to collapse
Vodafone Germany: Custom Firmware with VF branding, but no SIM- or Netlock
VoLTE has no toggle but is activated by default, VoWiFi has a toggle and works.
Has anyone figured out how to force VoLTE on Origin OS Ocean when the phone isn't on the 'supported' list of your carrier? If it is supported then as soon as you pop in their SIM card the option to enable VoLTE appears, but otherwise it just isn't there. With 3g networks shutting down in North America this creates a real problem, because even though I have 5g enabled, and usually pick up a 4g or 5g signal where I live, without VoLTE enabled all calls connect on 3g.
It's a real bummer. But whatever is under the settings, VoLTE is not actually activated. And Vivo is to blame. That's obvious from the service menu.
piskr said:
It's a real bummer. But whatever is under the settings, VoLTE is not actually activated. And Vivo is to blame. That's obvious from the service menu.
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Click to collapse
In Italy after 2/3 days Volte is automatically activated (operator Vodafone). Didn't touch any settings.
maxant69 said:
In Italy after 2/3 days Volte is automatically activated (operator Vodafone). Didn't touch any settings.
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Click to collapse
The VoLTE issue lies with Vivo, not with your carrier. When you put a carrier SIM into your phone it contains unique information that tells the phone who your carrier is and the phone then configures the APN settings automatically. You cannot edit them. In Origin OS Ocean you can open System/etc/apn-config.xml and you will see a list of every carrier in the world and read what default APN settings the operating system automatically configures the APN for that carrier to be.
I have the Vivo X Note with the same Origin OS Ocean firmware as the X70pro. My Canadian carrier supports VoLTE and WiFi calling and their tech support manually added the IMEI of my phone to the equipment list for my line and assured me that VoLTE and WiFi calling are provisioned for the line, but neither of those toggles appear in my Mobile Networks/Sim settings, because the APN that Vivo applies for my carrier doesn't support VoLTE. If I put the same SIM into my Samsung Note 20 Ultra 5g or my Huawei Mate 20 X and look at the APN settings, they permit VoLTE and the toggle and feature works on those phones - so it is not the carrier, or the SIM - it is Vivo and their default APN settings for your carrier.
I have a strong 5g signal here, and I can download and stream or do VoIP calls at 5g, but when I place a voice call it drops to 3g or H. That isn't an issue here in Canada, because we have kept our 3g voice network up and running. When I travel to the US, however, I can't place calls because without VoLTE enabled voice calls drop to 3g - which no longer exists in the United States. Someone needs to convince Vivo to change the apn-config.xml file to reflect APNs for North American carriers to ensure VoLTE is possible. I would just edit the .xml file myself, but you can't save changes to an .xml file without root, and we can't root because Vivo won't unlock the bootloader for Origin OS Ocean devices.
frcraig said:
The VoLTE issue lies with Vivo, not with your carrier. When you put a carrier SIM into your phone it contains unique information that tells the phone who your carrier is and the phone then configures the APN settings automatically. You cannot edit them. In Origin OS Ocean you can open System/etc/apn-config.xml and you will see a list of every carrier in the world and read what default APN settings the operating system automatically configures the APN for that carrier to be.
I have the Vivo X Note with the same Origin OS Ocean firmware as the X70pro. My Canadian carrier supports VoLTE and WiFi calling and their tech support manually added the IMEI of my phone to the equipment list for my line and assured me that VoLTE and WiFi calling are provisioned for the line, but neither of those toggles appear in my Mobile Networks/Sim settings, because the APN that Vivo applies for my carrier doesn't support VoLTE. If I put the same SIM into my Samsung Note 20 Ultra 5g or my Huawei Mate 20 X and look at the APN settings, they permit VoLTE and the toggle and feature works on those phones - so it is not the carrier, or the SIM - it is Vivo and their default APN settings for your carrier.
I have a strong 5g signal here, and I can download and stream or do VoIP calls at 5g, but when I place a voice call it drops to 3g or H. That isn't an issue here in Canada, because we have kept our 3g voice network up and running. When I travel to the US, however, I can't place calls because without VoLTE enabled voice calls drop to 3g - which no longer exists in the United States. Someone needs to convince Vivo to change the apn-config.xml file to reflect APNs for North American carriers to ensure VoLTE is possible. I would just edit the .xml file myself, but you can't save changes to an .xml file without root, and we can't root because Vivo won't unlock the bootloader for Origin OS Ocean devices.
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I don't think it's a Vivo problem. Carriers should give you access. As said before after 2 days I have Volte and HD icon even if device is not ufficial supported. I didn't change or touch anything. If your carrier uses a restricted policy on 5G or Volte there is nothing you can do.
maxant69 said:
I don't think it's a Vivo problem. Carriers should give you access. As said before after 2 days I have Volte and HD icon even if device is not ufficial supported. I didn't change or touch anything. If your carrier uses a restricted policy on 5G or Volte there is nothing you can do.
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Click to collapse
My experience with VoLTE is kinda weird, settings show me that I have both VoLTE and VoWiFi enabled. But none of them really work. It's true that obviously system recognize that, send me a notice that I could have VoLTE enabled and routes me to the message to my provider. And even more thrilled - I can toggle VoLTE in settings, get the HD voice sign in notification bar, but I don't have any VoLTE. The only direct consequence of the toggle is that I lose the caller's name in the phone, every caller becomes the unknown number. But my provider is not trustworthy, the other users have issues with VoLTE, I frankly don't know anyone who has it enabled. Thus, I tried my wife's sim and didn't get even option to enable VoLTE. My wife has a Chinese (Honor) phone and both VoLTE and VoWiFi work with this phone flawlessly. That's why I assume that the problem is on Vivo's side.