Hi, I updated to Android 12 when it was released, and it seems to have broken 5G NSA support on T-Mobile. With non-standalone in my area, I'm able to connect to midband 5G and get excellent data speeds. After the Android 12 update, it seems to prioritize standalone (SA) lowband 5G, which is often even slower than LTE, and I have not once seen it connect to NR NSA. I never encountered this on Android 11, but don't want to reflash my phone just to troubleshoot. I'm wondering if anyone else has encountered this issue. Thanks!
what app are you using to get the connection info? i have yet to find a network tools app that handles dual sim phones well. a few apps state android os itself dropped 2 sim support after android 9.
dkryder said:
what app are you using to get the connection info? i have yet to find a network tools app that handles dual sim phones well. a few apps state android os itself dropped 2 sim support after android 9.
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I'm just going into Settings -> About Phone -> SIM Status. It tells me the type of connection for voice and data. If I were on midband, it would show LTE for Voice and NR NSA for data. But it's showing NR SA for both, indicating my phone is on lowband.
zschmeez said:
I'm just going into Settings -> About Phone -> SIM Status. It tells me the type of connection for voice and data. If I were on midband, it would show LTE for Voice and NR NSA for data. But it's showing NR SA for both, indicating my phone is on lowband.
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Click to collapse
ok. i just got a straight talk t-mobile sim activated this morning and i show LTE for voice and NR NSA for data network type. i've done a few speedtests and it's been between 130-150Mb down with 30 Mb up. however, google fi which is same t-mobile tower gets over 200Mb down /30Mb up. so it just appears to me that t-mobile gives a sweeter deal to Fi than to straight talk. but that's just one morning and a couple tests.
dkryder said:
ok. i just got a straight talk t-mobile sim activated this morning and i show LTE for voice and NR NSA for data network type. i've done a few speedtests and it's been between 130-150Mb down with 30 Mb up. however, google fi which is same t-mobile tower gets over 200Mb down /30Mb up. so it just appears to me that t-mobile gives a sweeter deal to Fi than to straight talk. but that's just one morning and a couple tests.
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Click to collapse
Hmm, I'm on a normal T-Mobile plan, but I'm not sure if that would make a difference. Are you on Android 12?
This issue only showed up for me the day I updated my phone. I don't think I dropped it or anything, so I doubt it's something physically wrong with it. But I don't want to unlock the bootloader, wipe my phone, and roll back to Android 11 just for troubleshooting.
Figured out a solution. I stuck in my mom's T-Mobile SIM, which is much older and doesn't support standalone 5G, and it connected to NSA. So it's some software thing where they're heavily prioritizing SA 5G over NSA, even when NSA is available and SA is garbage.
zschmeez said:
Hmm, I'm on a normal T-Mobile plan, but I'm not sure if that would make a difference. Are you on Android 12?
This issue only showed up for me the day I updated my phone. I don't think I dropped it or anything, so I doubt it's something physically wrong with it. But I don't want to unlock the bootloader, wipe my phone, and roll back to Android 11 just for troubleshooting.
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Click to collapse
Yes, android 12. As well as a new sim. There was some mention by T-Mobile of having a new sim for the 5G. I have no idea if s new one is required, just that they said it in the materials they sent me that 5G would work best.
I have T-Mobile and am getting great service with 5G where I am. I have just recently got it connected though, and I was already on Android 12 when I had it connected for service. Not sure if that matters though?
I use Mint on T-Mobile towers. I just upgraded to Android 12 OTA, and with the adaptive connectivity setting enabled I see LTE as the mobile voice and the data fluctuates between IWLAN and NR NSA. I have wifi-calling enabled, with mobile network preferred. I didn't pay attention to this status screen in the past, so cannot say if anything changed really...
Related
So I was bored and wanted to play around and try to get this to work. So far I have been successful to get data text and mms working on 3G. Now I have noticed that when I boot the phone that it connects to LTE with a strong signal then it reconnects back to 3G its almost like its possible but something it blocking it. Has anyone had success getting further?
UPDATE: I have gotten FULL LTE on Verizon working. Currently trying to figure out a way to allow CDMA as well for calls
Ya good luck I had same issue as you . Talk text 3g working good. Or LTE only working .Never could figure out how to get them both going
Yea I know after hours of messing around lol and two sim cards wasn't satisfying enough I like the phone enough to jump off big red to try T-Mobile. I honestly like this phone better then my Pixel XL
I ditched my Verizon unlimited data plan for cricket unlimited and have no regrets. Best choice I ever made
joeyac02 said:
So I was bored and wanted to play around and try to get this to work. So far I have been successful to get data text and mms working on 3G. Now I have noticed that when I boot the phone that it connects to LTE with a strong signal then it reconnects back to 3G its almost like its possible but something it blocking it. Has anyone had success getting further?
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Click to collapse
Can you explain in detail exactly how you got this to work? I am dying to get this phone I had 1+1 when first realeased and left Verizon to get it, but now Im back on Verizon with my business phone and want this phone nothing else is close to this phone
bigtymeplayer85 said:
Can you explain in detail exactly how you got this to work? I am dying to get this phone I had 1+1 when first realeased and left Verizon to get it, but now Im back on Verizon with my business phone and want this phone nothing else is close to this phone
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Click to collapse
It won't work it's one or the other. You are wasting your time
The city I live In has Verizon's xlte network and if you upgrade to advanced Calling then voice calls and messages all use 4g LTE data instead of CDMA, so I would only need LTE data to work, I was able to get the 1+1 to get Verizon's signal but after 5 mins they noticed and intentionally blocked me off their Network a message popped up on the 1+1 saying I had been blocked
bigtymeplayer85 said:
The city I live In has Verizon's xlte network and if you upgrade to advanced Calling then voice calls and messages all use 4g LTE data instead of CDMA, so I would only need LTE data to work, I was able to get the 1+1 to get Verizon's signal but after 5 mins they noticed and intentionally blocked me off their Network a message popped up on the 1+1 saying I had been blocked
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Click to collapse
You have to add VoLTE on the phone AND with the carrier. you did both of these options, and t hen were blocked? Did you ever call and ask "why?"?
Thanks
joeyac02 said:
UPDATE: I have gotten FULL LTE on Verizon working. Currently trying to figure out a way to allow CDMA as well for calls
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Click to collapse
Just curious how you have "LTE" activated on the phone. I turned on "only LTE", but I get absolutely nothing. I am only interested in LTE on t he phone, I do not need to make voice calls of SMS
Force LTE provisioning
I know that people had the same issue on the ZTE axon 7 but we're able to force LTE provisioning by going into the dialer and dialing *#*#4636#*#*. This brings up a hidden test menu and under phone information there is a switch for LTE provisioning. It takes a few tries but eventually sticks on the axon. Can someone try this on the one plus phones to see if it works?
I know this has been rehashed many times, but I thought I'd share a my experiences of how to make the 3T usable on Verizon. Main reason I have the 3T is dual SIM and OEM bootloader unlock. Fantastic device. Switched from Verizon to AT&T just for the phone. The problem is my work uses Verizon. I refuse to carry two phones. So what I've done to solve this is bought the GravityBox app, which has a feature that allows, (among many things!) you to add a custom quick setting shortcut for Network Mode. It lets you decide which SIM the setting applies to, as well as any network modes to cycle through when pressing the shortcut. I of course pick the Verizon SIM. And only select two network modes: 1 CDMA only and 2 LTE only. CDMA only allows calls,text and 2G to work perfectly. When a sending or receiving a MMS on Verizon SIM, or needing to use Verizon LTE, I toggle to Verizon LTE only. This does kick AT&T offline for some reason, but beings that I rarely need to use Verizon data, it's not that big of deal.
So sorry if this was common knowledge but I haven't seen anything on this yet so I thought I'd share. I decided to try setting up AT&T's number sync between my new mate 10 pro and my LG Sport and it worked. What makes that amazing is this is the first non att branded phone I have ever been able to set up directly between the phone and a att smartwatch that didn't require me using a att branded smartphone in the middle. You can't find the ability to do it through the my att app or website but if you initiate through the watch, it will open the browser on your phone and then give you a number sync code, once you log in through the browser, you put in the code and then accept terms and it will successfully link. This phone also seems to work well with the LG Sport. Battery life is waaay better then when it's paired to my Att Note 8.
FYI, Att number sync allows multiple devices to receive a phone call or text message from the main line they are tied to. That way every thing is seen from one number. One of the requirements is that the phone must be Att branded.
So that tells me between this and VoLTE working on att with this phone, this phone was all but ready for att network and only thing missing was the att branding on the phone before att backed out.
Sorry if long l, just wanted to share to maybe help other att users.
Have you been able to get/verify that VoLTE is working on your mate 10 Pro? If yes, how did you verify it works? I have a Dual Sim 10 Pro rebranded to the US 10 Pro (did at Best Buy) with the Enhanced Voice and VoLTE options enabled. Thanks.
Sent from my SM-N950F using Tapatalk
I didn't use the default apn that sets up when I had my att sim inserted. I used the settings from att's support page: https://www.att.com/esupport/article.html#!/wireless/KM1218306
If I remember, there were a few subtle differences. Honestly, I didn't notice if VoLTE was working before the new apn settings but I see that it works for sure with the new apn settings. My status doesn't change from LTE whether on call and/or browsing.
ILuvRice said:
I didn't use the default apn that sets up when I had my att sim inserted. I used the settings from att's support page: https://www.att.com/esupport/article.html#!/wireless/KM1218306
If I remember, there were a few subtle differences. Honestly, I didn't notice if VoLTE was working before the new apn settings but I see that it works for sure with the new apn settings. My status doesn't change from LTE whether on call and/or browsing.
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well, not working for me... i used an app to validate data connection during phone call and when connected to a call, data drops to HSPA+.
d.cortez said:
well, not working for me... i used an app to validate data connection during phone call and when connected to a call, data drops to HSPA+.
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Click to collapse
Hmmm...visually the LTE symbol dosesnt change and I think it sounds like it should. What's the app you used? I'll check and see if I get the same thing.
ILuvRice said:
Hmmm...visually the LTE symbol dosesnt change and I think it sounds like it should. What's the app you used? I'll check and see if I get the same thing.
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Click to collapse
I use Network Cell Lite to check connectivity when on a phone call.
d.cortez said:
I use Network Cell Lite to check connectivity when on a phone call.
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Click to collapse
So I made a phone call with the app running and it showed under the raw tab:
Voice NW: LTE
Data NW: LTE+
So I'm guessing its working.
ILuvRice said:
So I made a phone call with the app running and it showed under the raw tab:
Voice NW: LTE
Data NW: LTE+
So I'm guessing its working.
Click to expand...
Click to collapse
yep, that's an indication it's working; time to call ATT. Thanks for checking.
d.cortez said:
yep, that's an indication it's working; time to call ATT. Thanks for checking.
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Click to collapse
No problem. I was thinking, you said you rebranded to us but I wonder if by a slim chance there is some hardware difference that is dectected? Like maybe a certain band att uses. I haven't looked at the differenceces in bands between models.
ILuvRice said:
No problem. I was thinking, you said you rebranded to us but I wonder if by a slim chance there is some hardware difference that is dectected? Like maybe a certain band att uses. I haven't looked at the differenceces in bands between models.
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Click to collapse
Cellular bands are the same as US version; when not in a call I connect to LTE+. I can achieve cellular download speeds of 98 Mbps. Main difference between US version and mine is my phone is dual SIM Mate 10 Pro. The second SIM connects to 4G when I make a call. If I use only 1 SIM, connection drops to HSPA+. I see an option to enable VoLTE on the second SIM, but it's disabled. Have you to find a way to enable it. I appreciate your feedback, thanks again.
d.cortez said:
Cellular bands are the same as US version; when not in a call I connect to LTE+. I can achieve cellular download speeds of 98 Mbps. Main difference between US version and mine is my phone is dual SIM Mate 10 Pro. The second SIM connects to 4G when I make a call. If I use only 1 SIM, connection drops to HSPA+. I see an option to enable VoLTE on the second SIM, but it's disabled. Have you to find a way to enable it. I appreciate your feedback, thanks again.
Click to expand...
Click to collapse
As you probably know, mine only has one Sim slot and when I go to settings and drill down into the mobile network options, under 'Advanced' Enhanced LTE Services is already enabled.
ILuvRice said:
As you probably know, mine only has one Sim slot and when I go to settings and drill down into the mobile network options, under 'Advanced' Enhanced LTE Services is already enabled.
Click to expand...
Click to collapse
i have the same setting/option and it's also enabled; see below. will contact at&t again tomorrow.
So I spent an extensive amount of time about this whole VoLTE situation with this phone with both At&t and ASUS. My question is how do you know if you are actually utilizing the VoLTE connection?
I am able to make clear voice calls while browsing the internet or downloading an application. My speeds vary anywhere between 60 and 100 Mbps with no connectivity issues. The phone has no indicator of LTE connection but is constantly 4g++. Asus and at&t both stated that is the LTE connection. So I went into the phone settings via the image in this and it shows the VoLTE setting not toggled.
So the next question is, what indicator is there that this connection is NOT VoLTE other than this toggle? The speeds appear faster than Hspa+ but nobody I spoke to had the technological knowledge to be able to explain this. Also what speeds down and up is everyone else receiving?
From what I have read, this phone doesnt support VoLTE. And what worries me is that all the carriers are transitioning to VoLTE starting in 2020. Some are saying phone calls will no longer be possible on this phone. Which confuses me as it just released.
You can tell by making a voice call and seeing if the phone stays on 4G++ or drops to 2G/3G. I am 99% sure we will not get VoLTE on this phone. TMobile rep suggested tweeting TMobile on Twitter as the marketing team there might help, but I just don't care anymore. I'll stick with my pixel 2 xl for now.
Is ANOTHER thread on this necessary? Wtf? No volte. Not now, not ever. Get your money back. Asus are idiots for releasing this phone in us with no volte. 2020, no phone calls. Enjoy!
M1A1SteakSauce said:
From what I have read, this phone doesnt support VoLTE. And what worries me is that all the carriers are transitioning to VoLTE starting in 2020. Some are saying phone calls will no longer be possible on this phone. Which confuses me as it just released.
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Click to collapse
I know VoLTE is 100% possible on this phone, however not in the USA. It has something to do with the USA companies and At&t told me VoLTE is definitely a possibility as well as WiFi calling in the future but that has to be certified by the US companies. This phone supposedly works with WiFi calling as well as VoLTE in the European market as they don't have the same issues with the companies controlling the way it operates. I am moving to Norway on the 23rd but honestly the connection has been fantastic and I do like the phone quite a bit. During my phone calls I remained at 4g+ or ++ while surfing the web or watching Netflix with no issues during the call or the film itself.
I have messed around with it to see if there was anything that seemed off about it but so far it has worked just as well as My note 10+. Also the phone is operating on 4g so saying that it can't be used is silly. The 4g band will be around for quite some time while some companies like Verizon are removing 3g as it operates on the cdma versus gsm. At&t will continue 3g operations until 2022 and 4g will take years to completely phase out from 5g and by then another phone will replace the ROG 2.
I will however annotate how this phone operates on the European networks once I arrive. As per my previous post I can obtain 40mbps up to 100mbps which is definitely 4g speeds. 3g can not obtain those types of speeds. The bands available are key to the operating network for sure though. I think at&t seems to offer the best fit here in the USA.
Eebzter said:
I know VoLTE is 100% possible on this phone, however not in the USA. It has something to do with the USA companies and At&t told me VoLTE is definitely a possibility as well as WiFi calling in the future but that has to be certified by the US companies. This phone supposedly works with WiFi calling as well as VoLTE in the European market as they don't have the same issues with the companies controlling the way it operates. I am moving to Norway on the 23rd but honestly the connection has been fantastic and I do like the phone quite a bit. During my phone calls I remained at 4g+ or ++ while surfing the web or watching Netflix with no issues during the call or the film itself.
I have messed around with it to see if there was anything that seemed off about it but so far it has worked just as well as My note 10+. Also the phone is operating on 4g so saying that it can't be used is silly. The 4g band will be around for quite some time while some companies like Verizon are removing 3g as it operates on the cdma versus gsm. At&t will continue 3g operations until 2022 and 4g will take years to completely phase out from 5g and by then another phone will replace the ROG 2.
I will however annotate how this phone operates on the European networks once I arrive. As per my previous post I can obtain 40mbps up to 100mbps which is definitely 4g speeds. 3g can not obtain those types of speeds. The bands available are key to the operating network for sure though. I think at&t seems to offer the best fit here in the USA.
Click to expand...
Click to collapse
I am currently using this phone with AT&T. So should I be good for calls through 2020 and 2021? Reason I ask is because I literally just got it a week ago, and then read this news about the whole VoLTE thing and was just devastated thinking I have to now find a way to sell it and find a new phone.
Also, since I got the phone, I am only ever on H+ for the signal. I thought it was LTE capable? I came over from Verizon, so the H+ was something new to me. I know I am in a LTE area. Do I need to do something to activate it?
M1A1SteakSauce said:
I am currently using this phone with AT&T. So should I be good for calls through 2020 and 2021? Reason I ask is because I literally just got it a week ago, and then read this news about the whole VoLTE thing and was just devastated thinking I have to now find a way to sell it and find a new phone.
Also, since I got the phone, I am only ever on H+ for the signal. I thought it was LTE capable? I came over from Verizon, so the H+ was something new to me. I know I am in a LTE area. Do I need to do something to activate it?
Click to expand...
Click to collapse
Was this a ported number? When I went from Verizon to at&t there was an issue when I ported the same number back to at&t. They were able to get it resolved by calling Verizon having them refresh the port and then re initiating the LTE from their end. And that was with my Samsung. I did speak to at&t again today about the LTE and they may have to make sure your Sim is "LTE" and also making sure they unlock it on their end. Supposedly the LTE and volte have to be activated from them. Also ensure you have the appropriate APN setting as sometimes with unlocked phones those setting do not carry over.
And the phone should be working fine until a minimum of 2022 even with 3g or H
Eebzter said:
Was this a ported number? When I went from Verizon to at&t there was an issue when I ported the same number back to at&t. They were able to get it resolved by calling Verizon having them refresh the port and then re initiating the LTE from their end. And that was with my Samsung. I did speak to at&t again today about the LTE and they may have to make sure your Sim is "LTE" and also making sure they unlock it on their end. Supposedly the LTE and volte have to be activated from them. Also ensure you have the appropriate APN setting as sometimes with unlocked phones those setting do not carry over.
Click to expand...
Click to collapse
I did bring the number over from Verizon. I may have to go in to AT&T to resolve that from what you're saying then.
Dealing with the APN setting, I am good with tech, but this part has me a tad confused. What should I be looking for on the phone? I see under APN, it says AT&T is selected. There are other options like tracfone, but I assume its fine then if it has AT&T selected?
M1A1SteakSauce said:
I did bring the number over from Verizon. I may have to go in to AT&T to resolve that from what you're saying then.
Dealing with the APN setting, I am good with tech, but this part has me a tad confused. What should I be looking for on the phone? I see under APN, it says AT&T is selected. There are other options like tracfone, but I assume its fine then if it has AT&T selected?
Click to expand...
Click to collapse
Here is what at&t recommends for APN settings
https://www.att.com/esupport/article.html#!/wireless/KM1218306
And yes something about how Verizon and at&t handle it some things can get "hung up" in the system
Eebzter said:
Here is what at&t recommends for APN settings
https://www.att.com/esupport/article.html#!/wireless/KM1218306
And yes something about how Verizon and at&t handle it some things can get "hung up" in the system
Click to expand...
Click to collapse
I appreciate the help! I will give it a try!
---------- Post added at 04:13 AM ---------- Previous post was at 03:59 AM ----------
Eebzter said:
Here is what at&t recommends for APN settings
https://www.att.com/esupport/article.html#!/wireless/KM1218306
And yes something about how Verizon and at&t handle it some things can get "hung up" in the system
Click to expand...
Click to collapse
I tried those APN settings and it seems to not work. The signal bar still shows a signal, but there is no longer a H or H+ sign. Hmmm
M1A1SteakSauce said:
I appreciate the help! I will give it a try!
---------- Post added at 04:13 AM ---------- Previous post was at 03:59 AM ----------
I tried those APN settings and it seems to not work. The signal bar still shows a signal, but there is no longer a H or H+ sign. Hmmm
Click to expand...
Click to collapse
That's interesting, but I would recommend going to at&t and confirming that LTE is good to go on your phone. They can also verify nothing is stuck in the system and your appropriate APN settings
Brand new pixel 5 on Google Fi and I cannot get wifi-calling to work at all. Old phone is a pixel 2 and it would use wifi-calling on every call, and it worked great. I have an absolutely trash cell signal, but a full wifi signal with gigabit internet....
Tried:
* wiping data/cache on google fi and carrier services
* erasing esim and re-activating
* contacted fi support who added me to "wifi calling opt-in program"
Nothing works. Anyone have this working?
EDIT/TL;DR: After about 2 days my wifi-calling suddenly began working. Apparently this may be the norm.
m03sizlak said:
Brand new pixel 5 on Google Fi and I cannot get wifi-calling to work at all. Old phone is a pixel 2 and it would use wifi-calling on every call, and it worked great. I have an absolutely trash cell signal, but a full wifi signal with gigabit internet....
Tried:
* wiping data/cache on google fi and carrier services
* erasing esim and re-activating
* contacted fi support who added me to "wifi calling opt-in program"
Nothing works. Anyone have this working?
Click to expand...
Click to collapse
There is definitely and issue with Google Fi and the pix 5. Mine won't use Sprint networks and will only sometimes call on wifi at least I think it is using wifi.
There would be a big wifi symbol right above the phone number if you were using wifi-calling.
EDIT: And you're correct, my pixel 5 also will not join Sprint, it stays on T-mobile. Even using the Sprint Dialer code (*#*#34777#*#*), it gives an error:
Google Fi:
Invalid MCC/MNC: Sprint (310120)
Same exact issue. I have a tread on here that I opened today about it. I've been on with Fi support multiple times. They are working on it at least so they say.
Duratime said:
Same exact issue. I have a tread on here that I opened today about it. I've been on with Fi support multiple times. They are working on it at least so they say.
Click to expand...
Click to collapse
Good to know. There's another thread about it here:
https://support.google.com/fi/thread/79698885?hl=en
On Consumer Cellular, wifi calling worked on my Samsung phones fine, even my wife's 3 year old Samsung. I don't even have that option with the Pixel. It's definitely a phone thing for some.
I'm on Fi with my new P5 and wifi calling works well. I'm in a strong TMO area and get only 5G for cell. I think why you don't see Sprint anymore is because their frequencies and bandwidth are all wrapped up in TMO now. Even my Network cell phone app which always showed both TMO and Spring along with my wifi no longer shows the Sprint network hiding in the background. Fi would do this so it could quickly switch to the stronger signal.
jawmail said:
I'm on Fi with my new P5 and wifi calling works well. I'm in a strong TMO area and get only 5G for cell. I think why you don't see Sprint anymore is because their frequencies and bandwidth are all wrapped up in TMO now. Even my Network cell phone app which always showed both TMO and Spring along with my wifi no longer shows the Sprint network hiding in the background. Fi would do this so it could quickly switch to the stronger signal.
Click to expand...
Click to collapse
You might be right, but there is strong Sprint coverage at my house and nearly no TMO. Shouldn't it switch to Sprint in that case? Also, if I mount the Fi sim in my Pix 4XL, I do get the Sprint service. It seems from what Fi support is telling me that they are going back to the carrier for answers but I think it is a phone issue. My address shows to be in an "excellent" Google Fi coverage area. I hope they can get it to work, since I love the call forwarding feature.
Duratime said:
You might be right, but there is strong Sprint coverage at my house and nearly no TMO. Shouldn't it switch to Sprint in that case? Also, if I mount the Fi sim in my Pix 4XL, I do get the Sprint service. It seems from what Fi support is telling me that they are going back to the carrier for answers but I think it is a phone issue. My address shows to be in an "excellent" Google Fi coverage area. I hope they can get it to work, since I love the call forwarding feature.
Click to expand...
Click to collapse
I'm not sure to be honest. From what I've read about the new TMO 5G, it is not standalone 5G meaning it use some sort of combo between the 2 companies frequencies to create a sort of hybrid 5G. I've read they use the TMO frequencies as the backbone and the Sprint frequencies since they are much higher can carry much more data do all the work. So basically the two companies have combined their networks in certain areas, I live near Chicago and coverage and speed is great. YMMV.
Maybe in other areas where they don't have 5G yet you may still have Sprint 4G access I just know I do not on the Pixel 5. On other Pixels from the 4 on down you may not have this issue because they are not 5G. If you Google "Tmobile 5G technology" it's a good read.
My wifi-calling started working suddenly, about 2 days after activation. I do wonder about the lack of sprint usage though.
TL;DR: USCC -> AT&T -> Google Fi -- Any way to get 4G/LTE on these carriers?
Hey all,
I haven't been very involved in the rooting/flashing/whatever scene since the Gingerbread-KitKat days, so my apologies for what might be a noob question, or if it even is the right question to ask.
A bit over a year ago, I switched from US Cellular to AT&T and brought my V40 with me. Despite some IMEI issues (was only 14 digits instead of 15, which messed with some online forms), I eventually managed to get it transferred. However, there was one big issue: I was only getting 3G/HSPA+ service. I imagine this would've been a deal breaker for most, but since I only really use my phone data for music streaming and Google Maps when I'm driving, it wasn't that big of a deal for me.
Then, recently, I switched to Google Fi to save money. I knew that the V40 didn't support the fancy carrier-switching stuff, but I didn't care as long as I had some sort of service. The same problem still persists, however: I only have 3G/HSPA+ service.
When I briefly looked into this last year, I remember seeing something about flashing some firmware that'd unlock the non-USCC LTE bands, but I'm not sure if this was valid (could be misremembering). Would flashing some sort of firmware on my phone allow me to have 4G again, and if so, what would I flash? The generic US unlocked firmware?
Also, not sure if this matters, but GSMArena and LG's own website both seem to state that the US Cellular's V40 model is the LM-V405UA0, but my model number according to Settings is LM-V405UA (no zero at the end). My phone worked fine on US Cellular, so I'm not sure what difference there is between the two models, if any.
edit:
Messing around with my phone settings, I was actually able to force a 4G LTE signal from T-Mobile (Google Fi's primary network iirc) under Settings > Network & internet > Mobile networks > System select and flipping the Network mode option between "Global" and "LTE/GSM/UMTS". Going from the latter to the former will switch me to 4G/LTE from 3G/HSPA+, but going in the opposite direction keeps me on 4G. To revert, I have to go further into the GSM/UMTS settings and select "UMTS/HSPA/HSPA+ only" in the Network submode option.
Both the 3G and 4G options had about the same (slow) network speed of 2mbps down, and according to Signal Spy, the LTE was probably using band 4 (it had a question mark beside it, implying it wasn't very certain). I don't know if it's a band issue or a location issue, but since I'm on WiFi most of the time nowadays, I'm not that pressed about it... maybe I'll back things up and flash the US Unlocked firmware as a weekend project sometime.