Database Users

VZW 4.4.2 (XT1060) on T-Mobile

Verizon is at it again. When using a T-Mobile SIM in my XT1060 with 4.4.2, I'm stuck on EDGE where I'd previously get HSPA+. The APN setup has been fixed, so it no longer disappears, but it doesn't really matter if you're stuck on 2G.
4.2.2
Worked perfectly with HSPA+ and LTE
4.4
Broke APN setup
Gimped HSPA+ speeds
4.4.2
Fixed APN setup
EDGE only data
EDIT: EDGE is forced in Global mode; select LTE/GSM/UMTS and UMTS only to restore HSPA+; wait for the modem to cycle and allow the SIM to register on the network
I still have issues with HSPA+ speeds on my phone. It could be a localized issue, but I'll have to do further testing.
So, it's officially useless.
All have voice/SMS, though some had issues with voice on T-Mo's LTE.

You are the second person to report this. Could you try a factory wipe or something? I have no idea why it would be EDGE only.

I am curious what would have changed. I did compare the built in APN list between 4.4 and 4.4.2 and noticed the built in APN for T-Mobile US changed from fast.t-mobile.com on 4.4 to epc.t-mobile.com in 4.4.2 which is an older APN. Have you tried manually adding back the fast.t-mobile.com APN?

landale said:
I am curious what would have changed. I did compare the built in APN list between 4.4 and 4.4.2 and noticed the built in APN for T-Mobile US changed from fast.t-mobile.com on 4.4 to epc.t-mobile.com in 4.4.2 which is an older APN. Have you tried manually adding back the fast.t-mobile.com APN?
Click to expand...
Click to collapse
Only the unlocked phones automatically add APNs. With the Verizon XT1060, I have to manually enter the APNs, and I only use fast.t-mobile.com.
On top of the EDGE only limitation, it occasionally times out completely, so that there's no throughput up or down through the modem. It seems Verizon has completely gimped data on other carriers. I disabled the Verizon APN and APN Permissions apps, but there's something deeper that's causing this. It could be in the kernel, which wouldn't be a good thing at all.
The kicker though is (excerpt from FCC's C Block Rules):
(e) Handset locking prohibited. No licensee may disable features on handsets it provides to customers, to the extent such features are compliant with the licensee's standards pursuant to paragraph (b)of this section, nor configure handsets it provides to prohibit use of such handsets on other providers' networks.
The key words are disable features and prohibit. Technically, they aren't prohibiting access of the handset on T-Mobile's network, but they are limiting it in a way.

I got H+ with 4.4.2 on my VZW Dev X. I had to edit the APN Type setting to be default,mms,supl. The rest of the settings matched my T-Mobile Galaxy S4 LTE's APN settings. Under mobile network settings, I also have selected LTE/GSM/UMTS.
I am at the office where it is serviced by an internal antenna system, so I don't have T-Mobile LTE, and I don't think its setup for 1900Mhz UMTS, but there is a refarmed T-Mobile antenna and LTE outside.
Ok, now it switched to just bars. And back to Edge. Not sure if this is due to the internal antenna system or the update.
Voice calls (in/out) work, SMS send/receive works, MMS send/receive works, web browser works, Hangouts works.

KidJoe said:
I got H+ with 4.4.2 on my VZW Dev X. I had to edit the APN Type setting to be default,mms,supl. The rest of the settings matched my T-Mobile Galaxy S4 LTE's APN settings. Under mobile network settings, I also have selected LTE/GSM/UMTS.
I am at the office where it is serviced by an internal antenna system, so I don't have T-Mobile LTE, and I don't think its setup for 1900Mhz UMTS, but there is a refarmed T-Mobile antenna and LTE outside.
Ok, now it switched to just bars. And back to Edge. Not sure if this is due to the internal antenna system or the update.
Voice calls (in/out) work, SMS send/receive works, MMS send/receive works, web browser works, Hangouts works.
Click to expand...
Click to collapse
Keep us posted on how it progresses throughout the day.

easyxtarget said:
Keep us posted on how it progresses throughout the day.
Click to expand...
Click to collapse
I wont be able to do anything until at least tonight when I get home.

KidJoe said:
I got H+ with 4.4.2 on my VZW Dev X. I had to edit the APN Type setting to be default,mms,supl. The rest of the settings matched my T-Mobile Galaxy S4 LTE's APN settings. Under mobile network settings, I also have selected LTE/GSM/UMTS.
I am at the office where it is serviced by an internal antenna system, so I don't have T-Mobile LTE, and I don't think its setup for 1900Mhz UMTS, but there is a refarmed T-Mobile antenna and LTE outside.
Ok, now it switched to just bars. And back to Edge. Not sure if this is due to the internal antenna system or the update.
Voice calls (in/out) work, SMS send/receive works, MMS send/receive works, web browser works, Hangouts works.
Click to expand...
Click to collapse
This makes sense as the change in the default APN was the only obvious change I saw between 4.4 and 4.4.2. It's at least encouraging that you got HSPA+ to work by changing the APN. Have the others with problems tried changing or adding a new APN to match the one from the previous build? For reference here is the old and new APN information copied directly from the APN list on the Verizon Moto X.
XT1060 with 4.4 built in T-Mobile APN:
<apn auth="NONE" mmsc="http://mms.msg.eng.t-mobile.com/mms/wapenc" password="none" server="*" user="none" apn="fast.t-mobile.com" mnc="260" mcc="310" carrier="T-Mobile US" protocol="IPV4V6" mtusize="1440"/>
XT1060 with 4.4.2 built in T-Mobile APN:
<apn auth="NONE" mmsc="http://mms.msg.eng.t-mobile.com/mms/wapenc" password="none" server="*" user="none" apn="epc.tmobile.com" mnc="260" mcc="310" carrier="T-Mobile US" preloaded="true" type="default,mms,supl,hipri,fota" protocol="IP" mtusize="1440"/>

Mine is still on EDGE, and doesn't even bother going to HSPA+ even though it's in the area. Even without the APN setup, it would automatically connect to HSPA+. The speeds just wouldn't be right until you put in the APN settings.
Speedtest reported 0.01Mbps down and 0.02Mbps up, so it's definitely 2G and not a reporting bug.

Jason.DROID said:
Mine is still on EDGE, and doesn't even bother going to HSPA+ even though it's in the area. Even without the APN setup, it would automatically connect to HSPA+. The speeds just wouldn't be right until you put in the APN settings.
Speedtest reported 0.01Mbps down and 0.02Mbps up, so it's definitely 2G and not a reporting bug.
Click to expand...
Click to collapse
What do you mean without the APN setup? Just confused as to whether you are describing before on 4.4 and now on 4.4.2. I think everyone is in agreement that the APN settings for T-Mobile on 4.4.2 are wrong which is definitely part if not all of the problem since it's the most obvious change from 4.4. Have you tried adding a new APN using the settings used in the 4.4 build and selecting that as the APN to use?

landale said:
What do you mean without the APN setup? Just confused as to whether you are describing before on 4.4 and now on 4.4.2. I think everyone is in agreement that the APN settings for T-Mobile on 4.4.2 are wrong which is definitely part if not all of the problem since it's the most obvious change from 4.4. Have you tried adding a new APN using the settings used in the 4.4 build and selecting that as the APN to use?
Click to expand...
Click to collapse
As I told you before, the Verizon Moto X DOES NOT automatically add APNs. It never did on 4.2.2, 4.4, or 4.4.2. Only VZWINTERNET is ever automatically added.
I also said that I'm using fast.t-mobile.com.
It's not the APN setup. HSPA+ is disabled.

Jason.DROID said:
As I told you before, the Verizon Moto X DOES NOT automatically add APNs. It never did on 4.2.2, 4.4, or 4.4.2. Only VZWINTERNET is ever automatically added.
I also said that I'm using fast.t-mobile.com.
It's not the APN setup. HSPA+ is disabled.
Click to expand...
Click to collapse
I know what you said but you are referring to what shows on the APN list in Mobile Settings. Just because an APN doesn't show in that list doesn't mean it isn't preloaded into the phone but set to not be viewable. There is a huge list of APN's preloaded onto the Moto X for just about every major GSM carrier in the world and these are used when a SIM used when on that carrier (file pulled directly from my Moto X is attached in the zip file to this post). If the APN preloaded is wrong it will cause problems with data working. My question on you using the APN from 4.4 wasn't just the APN address of fast.t-mobile.com but also the remaining settings which matter as well such as protocol and type. I am just trying to help from my experience dealing with these sorts of issues and the fact that another user got HSPA+ to work earlier today is what made me think there might be more to it.
Anyway I should have access to a friends AT&T Nano SIM in the next day or two and since it uses the same band of HSPA+ as T-Mobile does on the Moto X I can check on that too.

landale said:
I know what you said but you are referring to what shows on the APN list in Mobile Settings. Just because an APN doesn't show in that list doesn't mean it isn't preloaded into the phone but set to not be viewable. There is a huge list of APN's preloaded onto the Moto X for just about every major GSM carrier in the world and these are used when a SIM used when on that carrier (file pulled directly from my Moto X is attached in the zip file to this post). If the APN preloaded is wrong it will cause problems with data working. My question on you using the APN from 4.4 wasn't just the APN address of fast.t-mobile.com but also the remaining settings which matter as well such as protocol and type. I am just trying to help from my experience dealing with these sorts of issues and the fact that another user got HSPA+ to work earlier today is what made me think there might be more to it.
Anyway I should have access to a friends AT&T Nano SIM in the next day or two and since it uses the same band of HSPA+ as T-Mobile does on the Moto X I can check on that too.
Click to expand...
Click to collapse
I know they're included in the build, but I've ALWAYS had to manually add the APN to get things working properly; the included APNs are usually for carrier unlocked retail phones like the XT1053. In 4.4, manually added APNs would usually disappear, but I found a workaround to make it stay. Still, HSPA+ was artificially limited (0.05-0.20Mbps down, 1.0Mbps up) just like when the APN isn't setup. Now on 4.4.2, it will only connect to EDGE, regardless.
Looking further, even when using fast.t-mobile.com, the phone forces epc.tmobile.com and EDGE only. I'm not rooted, so there's nothing I can do about it.

Jason.DROID said:
I know they're included in the build, but I've ALWAYS had to manually add the APN to get things working properly; the included APNs are usually for carrier unlocked retail phones like the XT1053. In 4.4, manually added APNs would usually disappear, but I found a workaround to make it stay. Still, HSPA+ was artificially limited (0.05-0.20Mbps down, 1.0Mbps up) just like when the APN isn't setup. Now on 4.4.2, it will only connect to EDGE, regardless.
Looking further, even when using fast.t-mobile.com, the phone forces epc.tmobile.com and EDGE only. I'm not rooted, so there's nothing I can do about it.
Click to expand...
Click to collapse
Okay that is bizarre. I just remembered one of my coworkers had a iphone 5s on t-mobile and just borrowed her SIM. I am also on a stock, non-rooted Verizon Moto X running 4.4.2 and it connected to HSPA+ immediately. I didn't even change the APN at all. I even ran a speed test and got 4.33MB down and 1.84MB up. Here is a screen shot of the status attached. Not sure why it worked for me and not for you.

Could be time for an FDR, but before that, I'm gonna try a different area of service.
I have another T-Mobile SIM that I can register as well if all else fails.

Jason.DROID said:
Could be time for an FDR, but before that, I'm gonna try a different area of service.
I have another T-Mobile SIM that I can register as well if all else fails.
Click to expand...
Click to collapse
Yeah I wish I could tell you that I did something special to get HSPA+ to work, I literally did nothing other then take out my Verizon one and put in the T-Mobile one, didn't even do a restart or change it off of Global (although I did shortly after switch it to LTE/GSM/UMTS to test that as well). The weird thing is it didn't connect to LTE at all when I know on 4.4 I could get it to connect it just wouldn't let you make calls. To be fair I didn't try much to try and get LTE to work aside from adding a new APN with the so called corrected T-Mobile LTE APN settings as my coworker wanted her SIM back. Maybe others can play around with that more.

landale said:
Yeah I wish I could tell you that I did something special to get HSPA+ to work, I literally did nothing other then take out my Verizon one and put in the T-Mobile one, didn't even do a restart or change it off of Global (although I did shortly after switch it to LTE/GSM/UMTS to test that as well). The weird thing is it didn't connect to LTE at all when I know on 4.4 I could get it to connect it just wouldn't let you make calls. To be fair I didn't try much to try and get LTE to work aside from adding a new APN with the so called corrected T-Mobile LTE APN settings as my coworker wanted her SIM back. Maybe others can play around with that more.
Click to expand...
Click to collapse
I even went into fastboot and erased the modemst1 and modemst2 again to have it reregister everything. Still nothing. Unless T-Mobile removed HSPA+ from the area around my home recently, I'd say it's the phone.
I'll keep playing with it. I'd really like the 4.4.2 flash files though just to be sure something didn't happen in the OTA update.

Jason.DROID said:
I even went into fastboot and erased the modemst1 and modemst2 again to have it reregister everything. Still nothing. Unless T-Mobile removed HSPA+ from the area around my home recently, I'd say it's the phone.
I'll keep playing with it. I'd really like the 4.4.2 flash files though just to be sure something didn't happen in the OTA update.
Click to expand...
Click to collapse
In Mobile Network settings what do you have selected under Select Network (the last option)? Do you have it on Automatic or UMTS only? Also try downloading this application https://play.google.com/store/apps/details?id=com.tapbase.LTEswitcher
Then once you have it try setting the preferred network to WCDMA only or GSM Auto and see if that helps as well.

landale said:
In Mobile Network settings what do you have selected under Select Network (the last option)? Do you have it on Automatic or UMTS only? Also try downloading this application https://play.google.com/store/apps/details?id=com.tapbase.LTEswitcher
Then once you have it try setting the preferred network to WCDMA only or GSM Auto and see if that helps as well.
Click to expand...
Click to collapse
Already tried all of that. It only connects to EDGE. I used the hidden phone settings menu to access the more advanced settings, and still no dice.

KidJoe said:
I got H+ with 4.4.2 on my VZW Dev X. I had to edit the APN Type setting to be default,mms,supl. The rest of the settings matched my T-Mobile Galaxy S4 LTE's APN settings. Under mobile network settings, I also have selected LTE/GSM/UMTS.
I am at the office where it is serviced by an internal antenna system, so I don't have T-Mobile LTE, and I don't think its setup for 1900Mhz UMTS, but there is a refarmed T-Mobile antenna and LTE outside.
Ok, now it switched to just bars. And back to Edge. Not sure if this is due to the internal antenna system or the update.
Voice calls (in/out) work, SMS send/receive works, MMS send/receive works, web browser works, Hangouts works.
Click to expand...
Click to collapse
Just as a follow up.. At home, in an area where T-Mobile has HSPA on 1900mhz, I do get H+ and even LTE (band 4) (LTE speed test screen shot -> http://mark.cdmaforums.com/X-STUFF/2014-02-27 01.47.07.png ).
When On LTE, the "bug" of making a call drops signal/service still happens.
When I keep it on UMTS and have an H+ connection, it works fine. And the connection is stable at home.
I'm attaching some shots.
And I should mention, the SIM I'm using is a T-Mobile Nano SIM that I use with an adapter in my T-Mobile Galaxy S3. I had it switched to Nano so I could also put it in my iPhone if/when needed (its a work thing).

[Q] SM-G900i with ATT network

I got an international version SM-G900i from Amazon. I have an ATT sim card. The text and phone calls work fine but I could not get any data roaming. Though from other posts I got the data roaming, I was not able to set onto the ATT 3G/2G network in the network operator selection. My network is always shown as Maritime. Does anybody know why this happens and ways to change it?
Thanks a lot.

chengyww said:
I got an international version SM-G900i from Amazon. I have an ATT sim card. The text and phone calls work fine but I could not get any data roaming. Though from other posts I got the data roaming, I was not able to set onto the ATT 3G/2G network in the network operator selection. My network is always shown as Maritime. Does anybody know why this happens and ways to change it?
Thanks a lot.
Click to expand...
Click to collapse
Have you checked apn setting and made sure they are correct for ATT?

Well,,,,
madkins0022 said:
Have you checked apn setting and made sure they are correct for ATT?
Click to expand...
Click to collapse
I tried configure the APN setting based on a link online for ATT APN. Now I am losing signals even for calls and texts....I think there might be other things that are wrong...

Error message for no ATT service
Tried different variety of ATT APN setting. Still could not get it to work....the phone shows a signal but gave me an error message that Selected network(AT&T) not available

chengyww said:
Tried different variety of ATT APN setting. Still could not get it to work....the phone shows a signal but gave me an error message that Selected network(AT&T) not available
Click to expand...
Click to collapse
I'm not sure what did you mean by "data roaming"??
Anyway, the problem for now is no network register. The APN settings will NOT affect at this step, so not not try to mess up with it right now.
Try to get into Settings > More networks > Mobile networks, and set Network mode to Auto connect, and Network operator > Select automatically.
That may help the device to register on the Home network.

Problem solved....or maybe not but it is working!
vndnguyen said:
I'm not sure what did you mean by "data roaming"??
Anyway, the problem for now is no network register. The APN settings will NOT affect at this step, so not not try to mess up with it right now.
Try to get into Settings > More networks > Mobile networks, and set Network mode to Auto connect, and Network operator > Select automatically.
That may help the device to register on the Home network.
Click to expand...
Click to collapse
Okay. Thanks. I switched it back to the auto-selection mode. By data roaming....I mean 3G data. My phone is working now. I checked ATT billing usage report, it did not increase the data usage dramatically so I guess everything is fine.

chengyww said:
Okay. Thanks. I switched it back to the auto-selection mode. By data roaming....I mean 3G data. My phone is working now. I checked ATT billing usage report, it did not increase the data usage dramatically so I guess everything is fine.
Click to expand...
Click to collapse
Glad that your phone works now.
BTW "data roaming" and "3G data" are different things. "data roaming" is "3G data" when you are roaming to another network (not your home network).

Note fe won't get 4g lte. 3g only.

Hi there! My note fe can only get 3g. My model is n935k and I am a current an ATT user. I tried to force the phone to LTE only but when I did that, the phone was totally out of service. No network and no call service. I thought note fe LTE band will be worldwide, so is there any setting that I missed?

Tim007super said:
Hi there! My note fe can only get 3g. My model is n935k and I am a current an ATT user. I tried to force the phone to LTE only but when I did that, the phone was totally out of service. No network and no call service. I thought note fe LTE band will be worldwide, so is there any setting that I missed?
Click to expand...
Click to collapse
1. make sure your APN is ATT Nextgenphone (should have been auto-configured when you booted phone the first time) 2. Try reseting your network settings (this will remove bluetooth and wifi settings) settings->general management->reset->reset network settings and/or 3.Call ATT and make sure your account is (still) provisioned for LTE. i have the same model as you do and have no problem getting LTE service. picture below shows i'm connecting to LTE Bands 2, 4, 5 & 17.

I reset the network setting and still doesn't work. The apn is nextgenphone.

cortez.i said:
1. make sure your APN is ATT Nextgenphone (should have been auto-configured when you booted phone the first time) 2. Try reseting your network settings (this will remove bluetooth and wifi settings) settings->general management->reset->reset network settings and/or 3.Call ATT and make sure your account is (still) provisioned for LTE. i have the same model as you do and have no problem getting LTE service. picture below shows i'm connecting to LTE Bands 2, 4, 5 & 17.
Click to expand...
Click to collapse
May I see your apn setting?

fellow note fe user in north america here.
no issue with lte. but @cortez.i what LTE log app is that? and also how did you customize your icons on the status bar?

LTE Discovery from the play store... Substratum theme for Samsung (Swift Dark) for icons.

Tim007super said:
May I see your apn setting?
Click to expand...
Click to collapse
It's the same as on att website. Pic attached

cortez.i said:
It's the same as on att website. Pic attached
Click to expand...
Click to collapse
I tried ways you told me and the phone is still connected to 3g

cortez.i said:
It's the same as on att website. Pic attached
Click to expand...
Click to collapse
And I have tried some app like force phone to switch to lte. After forcing the phone to lte, the phone signal is lost and become emergency call only.

I had the same exact problem and I'm also on AT&T. Restarting the phone fixed it, at least for now.

mb523 said:
I had the same exact problem and I'm also on AT&T. Restarting the phone fixed it, at least for now.
Click to expand...
Click to collapse
sigh, I restarted it and it still showed 3g

Tim007super said:
sigh, I restarted it and it still showed 3g
Click to expand...
Click to collapse
if you haven't done this already, consider trying another SIM. I'd also post screen shots of your configurations; could be something we've missed in our attempts to help you resolve your issues.

Unlocked Sprint G6 on TMUS

Got through the Sprint process and had the G6 unlocked for TMUS. Got the APN set up. Issue is the phone is generally in 3G. I can see under the mobile networks settings, I have the following options:
Automatic (current setting)
CDMA/LTE (LTE yes, calling no)
CDMA
GSM/UMTS
Any idea if there is a way to get a GSM/LTE option. Newbie here, but the phone seems to have the right bands, just the CDMA centric Network settings.
Ideas?

Cmorath said:
Got through the Sprint process and had the G6 unlocked for TMUS. Got the APN set up. Issue is the phone is generally in 3G. I can see under the mobile networks settings, I have the following options:
Automatic (current setting)
CDMA/LTE (LTE yes, calling no)
CDMA
GSM/UMTS
Any idea if there is a way to get a GSM/LTE option. Newbie here, but the phone seems to have the right bands, just the CDMA centric Network settings.
Ideas?
Click to expand...
Click to collapse
Have you tried through the hidden menu

Can not get into the esecret menu. Get bad MMI
I tried to get into the secret menu to change the network setting, but when I try, I get a bad MMI message. I am using
<star>#546368#<star>993#
Was a Sprint model. (993)
Any ideas. I saw the secret menu on YouTube and it does seem to have the gsm/umts /lte setting I would need.

not receiving incoming calls...

just got the phone yesterday and updated it to the P beta. everything works amazingly well for a beta in my opinion, BUT i cant receive calls. outgoing calls, texts, web and apps are just fine.
spent almost 2 hours at tmobile flipping all the settings around and no luck. any ideas would be appreciated.

Same issue here bro...Incoming don't ring but I get voicemail notifications.... Really annoying, even if it is a DP.

Turns out the beta doesn't play well with the essential LTE. Switch to 3g and calls will come through. Hopefully it doesn't take long to find a work around for it

I believe the people having this issue have volte enabled...try and disable volte (it's broken anyway and more than likely why calls won't ring through) and see if that works

Got same issue... My experience was that I could solve the problem with reboot.
Issue came after playing on settings for mobile network.
Is meaning, when you do this you have to reboot afterwards otherwise you can't receive calls
Try it.

vergilbt said:
Got same issue... My experience was that I could solve the problem with reboot.
Issue came after playing on settings for mobile network.
Is meaning, when you do this you have to reboot afterwards otherwise you can't receive calls
Try it.
Click to expand...
Click to collapse
Tried rebooting multiple times while changing settings around. The only way I can get the calls to come through is by going without LTE completely.

knotjeff said:
Tried rebooting multiple times while changing settings around. The only way I can get the calls to come through is by going without LTE completely.
Click to expand...
Click to collapse
Settings/network settings/mobile network/advanced/enhanced LTE?

I had the same issue and to fix mine I just enabled Wifi Calling.
When on wifi I didn't get a call, just missed call notification. After enabling wifi calling, it comes through without issue.
I tested calling off wifi and on wifi and all calls come through good now.
This could be similar, so you guys might want to look at that also.
Good luck!

Heard from a few that this was solved by going into phone app settings -> calls -> calling accounts, then turning on "receive incoming calls". Seems it's disabled to save battery? Can't confirm as I just flashed to try it out and then went back to 8.1 because I like themes too much. Lol.

I'm on Sprint and was never able to make or receive calls regardless of Network settings in the easily accessible options menu.
The following fixed my issue. You can access this menu without downloading an app but I forget how so it's easier to just download the free app https://play.google.com/store/apps/details?id=com.xsquarestudio.forcelte
I had my network mode set to LTE/CDMA when first using this app, and somewhere in the middle I changed it to CDMA but I'm not sure how much that impacted the actual fix.
These were my steps. I'm not responsible for any damage this may cause to your device as I'm not sure if messing with these settings is foolproof or not.
First, opened previously linked app "Force LTE" then under "Set Preferred Network Type" I changed to CDMA only. Enabled/disabled airplane mode. This seemed to do nothing as LTE was still showing in statusbar.
I then chose CDMA auto (PRL), airplane mode on/off, didn't seem to do much either. LTE still showed in statusbar and couldn't make calls. Also "Voice Network Type" showed "Emergency Calls only" inside the app.
I then chose the 3 dot menu and chose "select radio band". I changed that to United States, without resolving problem. Then selected "Cellular 800" and this may have solved the problem, but I continued on and selected PCS, fiddled with some settings in Phones settings menu. Was finally able to receive calls and my signal indicator showed 3G. In app Voice Network Type was listed as 1xRtt. I decided to select radio band once more and chose Class 10.
Calls were still functioning fine. So I went into Main settings menu and changed mobile network from CDMA to LTE/CDMA. LTE kicked in and calls still work!
Again, these settings may only work for Sprint hence the PCS Network option, and I believe Sprint may utilize the 800mhz frequency. The app might show you different options depending on your carrier. I don't know.
Anyway, fully functioning! Woohoo!!

Forgetfull said:
Settings/network settings/mobile network/advanced/enhanced LTE?
Click to expand...
Click to collapse
I don't have anything in my settings that says "enhanced LTE" .
Tried using the 4g/LTE and the LTE only options. Neither would let calls through.

I have this problem using the Essential PH-1 with Android 9 Pie in South Korea on the KT network. It should be fully compatible, according to radio specifications, however it only works when I change the following setting:
Settings | Network & Internet | Mobile network | Advanced | Preferred network type | 3G
This is not ideal, since it makes the Internet slow, but at least I can make/receive voice calls. I submitted a support ticket to Essential requesting their official help (I'm well within warranty).

I had the same issue when I use my Att prepaid plan. The problem is caused by wrong network type, you can send text and browse internet, because they use the different channel. My PH-1 wrongly recognized the sim as CDMA/LTE mode, just switch it to 4G/LTE, it will be work. Go to Settings, then search "wi-fi calling", point "advanced" then you can see an opinion "Preferred network type" if you are ATT or T-mobile user, and your preferred network type is "LTE/CDMA“ then your phone cannot make call. Switch it to "4G/LTE", you phone will be work. BTW, Verzion uses CDMA, so if you are Verzion user, CDMA/LTE will work for you phone.