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Tmobile wifi calling issues when in airplane mode and on Delta flights with gogo

I recently purchased a brand new XT1103 64gb N6 and was hopeful to make this my daily driver, but having nothing but issues with this phone ever since I've started using it...in fact, it has been so horrible I went back to the LG G4 that I was using before the N6...my issues:
#1. Wifi calling - I have gotten this feature to work at home, but it won't work if I put the phone in airplane mode and connect to a wifi network. For example, on Delta flights that have internet they offer free tmobile texting...by following the directions and prompts, it says that I'm connected, but when I try to send a text it tells me to enable cellular network. On my LG G4, if I do the same procedure, it enables the wifi calling feature and displays the wifi calling icon and I'm able to send/receive texts. On the N6, this feature does not work. I have yet to see any discussion on XDA about using the N6 to text inflight on Delta flights. In addition, I was recently in Paris and tried to enable a wifi call and it gave me the same error...."please enable cellular network to make a call"...when I take the phone out of airplane mode and enable wifi calling (when connected to the hotel wifi), it thinks for a period of time then will allow a wifi call, but only if the cellular network is enabled...never in airplane mode with just wifi enabled. Is there something that is wrong with the N6 in regards to wifi calling? On my LG G4, if I put my phone in airplane mode and turn on the wifi, it will enable wifi calling if I connect to a wireless network. Overseas it's imperative that I'm using a wifi call since TMO charges 20 cents/min on the cell network, but having to enable the cellular network forces me to initiate a call before I see that it's making a wifi call. I am not happy about the wifi calling implementation on the N6 and wish it was more like every other TMO phone I have used in the past...
#2. Signal quality and battery life - as noted in many posts, the signal is horrible and continually bounces around. I've followed several recommendations and have done the following when I received the phone - opened the box, flashed TMO 5.1.1 rom and rebooted with my TMO sim...phone did several updates, then updated to Marshmallow...signal was extremely weak anywhere I used the phone (I live in central Iowa and they only have HSPA+) TMO has not turned on LTE in my area of Iowa...I went to Chicago and experienced the same issues...fast battery drain and poor signal....I flashed Pure Nexus 6.0 and TMO 5.1.1 radio and experienced the same issues so instead of getting a headache messing with the phone, I just went to a local tmo store and got a new sim chip for my LG G4 and have been using it without issue for the last couple of days...It worked much better in Paris and maintained a better cell signal in Paris and I was able to make several wifi calls in airplane mode at the hotel there...
Can anyone share their thoughts and help me improve my experience with this phone? I really like the camera, screen, and feel of the N6, but I can't have a phone with poor signal, poor battery, and faulty wifi calling. Thanks in advance. Nick

wifi calling has never worked for me in airplane mode.. is it supposed to, i dont think so? and it sounds like you live in a small city or in the country? it sounds like it when youre talking about your signal. i live in nyc, and am on tmobile, and i am always connected to lte. my signal never changes, except on one spot on a highway near the ocean. other than that, my signal is perfect. anyways, you can flash and try different n6 radios. some work better for some and worse for others. and you dont need root to flash radios, but you do need to use fastboot.

demonkc135 said:
#1. Wifi calling - I have gotten this feature to work at home, but it won't work if I put the phone in airplane mode and connect to a wifi network. For example, on Delta flights that have internet they offer free tmobile texting...by following the directions and prompts, it says that I'm connected, but when I try to send a text it tells me to enable cellular network. On my LG G4, if I do the same procedure, it enables the wifi calling feature and displays the wifi calling icon and I'm able to send/receive texts. On the N6, this feature does not work. I have yet to see any discussion on XDA about using the N6 to text inflight on Delta flights. In addition, I was recently in Paris and tried to enable a wifi call and it gave me the same error...."please enable cellular network to make a call"...when I take the phone out of airplane mode and enable wifi calling (when connected to the hotel wifi), it thinks for a period of time then will allow a wifi call, but only if the cellular network is enabled...never in airplane mode with just wifi enabled. Is there something that is wrong with the N6 in regards to wifi calling? On my LG G4, if I put my phone in airplane mode and turn on the wifi, it will enable wifi calling if I connect to a wireless network. Overseas it's imperative that I'm using a wifi call since TMO charges 20 cents/min on the cell network, but having to enable the cellular network forces me to initiate a call before I see that it's making a wifi call. I am not happy about the wifi calling implementation on the N6 and wish it was more like every other TMO phone I have used in the past...
Click to expand...
Click to collapse
I had the same issue using GoGo on the first flight.
At home, make a few calls when connected to WiFi. In settings/More, Switch from WiFi preferred to Cellular preferred, and go back to home (clicking ok as needed). Then, switch back to Wi-Fi preferred, (toggle the on/off slider at the top as well). Make a call again while connected to WiFi (make sure it shows WiFi calling).
Now, on your next flight, (in airplane mode, enable WiFi) connect to the gogo internet (use the initial splash page to select T-Mo texting/WiFi, captcha etc). Then, try texting - it should work. (it did for me)
I haven't tried WiFi calling from overseas, so can't comment - but I know I'd just use hangouts (or skype) to call.

I'll give that a try when I get home from my trip...I did try making a few wifi calls at home, but I didn't cycle the wifi calling feature...I will roll back the update to the stock TMO 5.1.1 and see how it works...
Quick question, is there a way to not install the 6.0 OTA from tmo? I'm guessing that I can just ignore it...N

Signal issues?

Is anyone having signal issues with the axon pro? My phone keeps going in and out of signal, and while my status bar says that I have "no service" I will have full bars, but only when connected to WiFi. When not connected to WiFi, all the bars are lost.
Is anyone else experiencing these signal issues or bug of this sort? Just trying to determine the root of the problem.
Sent from my A1P using Tapatalk

When did you start having problems? After the latest update?
I think it is a problem with the Wifi calling feature. After trying wifi calling and having problems (the other person couldn't hear me), I decided to turn it off.
After turning it off I started having crazy issues - the wifi calling would turn on even though I had turned it off. After turning off wifi completely, data wouldn't work so I rebooted the phone. After rebooting the phone, I couldn't get a signal at all. I tried rebooting the phone multiple times but the signal wouldn't come back. I switched SIMs and it still wouldn't work. At this point I was thinking there was a hardware problem with the phone so I was considering calling ZTE to get a new one. But I tried one last thing - I turned wifi back on and made a wifi call - the signal came back! So it is a software problem.
So I turned on wifi calling again but configured for "cellular preferred". It seemed to work well for a while, but then a few days later went crazy notifying me every few seconds that wifi calling was turning on/turning off.
To keep the phone stable I have now unfortunately had to setup the phone with "Wifi Calling Preferred". Thankfully soon after I did this I started getting error "REG09: Missing 911 address" so it doesn't try to use wifi calling anymore.
No point calling ZTE support because their phone support is appallingly bad. They won't understand the issue, they won't give me a ticket number. All they will say is either "reset the phone" or try to send me a new phone which will just make me lose time and lose data. They had a website where you could raise tickets for a little while...but it looks like it has been blocked now as it could have been too useful .

gflash2015 said:
When did you start having problems? After the latest update?
I think it is a problem with the Wifi calling feature. After trying wifi calling and having problems (the other person couldn't hear me), I decided to turn it off.
After turning it off I started having crazy issues - the wifi calling would turn on even though I had turned it off. After turning off wifi completely, data wouldn't work so I rebooted the phone. After rebooting the phone, I couldn't get a signal at all. I tried rebooting the phone multiple times but the signal wouldn't come back. I switched SIMs and it still wouldn't work. At this point I was thinking there was a hardware problem with the phone so I was considering calling ZTE to get a new one. But I tried one last thing - I turned wifi back on and made a wifi call - the signal came back! So it is a software problem.
So I turned on wifi calling again but configured for "cellular preferred". It seemed to work well for a while, but then a few days later went crazy notifying me every few seconds that wifi calling was turning on/turning off.
To keep the phone stable I have now unfortunately had to setup the phone with "Wifi Calling Preferred". Thankfully soon after I did this I started getting error "REG09: Missing 911 address" so it doesn't try to use wifi calling anymore.
No point calling ZTE support because their phone support is appallingly bad. They won't understand the issue, they won't give me a ticket number. All they will say is either "reset the phone" or try to send me a new phone which will just make me lose time and lose data. They had a website where you could raise tickets for a little while...but it looks like it has been blocked now as it could have been too useful .
Click to expand...
Click to collapse
Trying posting to their Twitter account and report the issue, that is how i got their attention. Also when you call them (here in the USA) tell them that you have already done a reset on your phone and that did not resolve the issue!!!

gflash2015 said:
When did you start having problems? After the latest update?
I think it is a problem with the Wifi calling feature. After trying wifi calling and having problems (the other person couldn't hear me), I decided to turn it off.
After turning it off I started having crazy issues - the wifi calling would turn on even though I had turned it off. After turning off wifi completely, data wouldn't work so I rebooted the phone. After rebooting the phone, I couldn't get a signal at all. I tried rebooting the phone multiple times but the signal wouldn't come back. I switched SIMs and it still wouldn't work. At this point I was thinking there was a hardware problem with the phone so I was considering calling ZTE to get a new one. But I tried one last thing - I turned wifi back on and made a wifi call - the signal came back! So it is a software problem.
So I turned on wifi calling again but configured for "cellular preferred". It seemed to work well for a while, but then a few days later went crazy notifying me every few seconds that wifi calling was turning on/turning off.
To keep the phone stable I have now unfortunately had to setup the phone with "Wifi Calling Preferred". Thankfully soon after I did this I started getting error "REG09: Missing 911 address" so it doesn't try to use wifi calling anymore.
No point calling ZTE support because their phone support is appallingly bad. They won't understand the issue, they won't give me a ticket number. All they will say is either "reset the phone" or try to send me a new phone which will just make me lose time and lose data. They had a website where you could raise tickets for a little while...but it looks like it has been blocked now as it could have been too useful .
Click to expand...
Click to collapse
Those are precisely the issues I am having as well
Sent from my A1P using Tapatalk

I got some signal issues too I only get 2 to 3 tower usually but at time its completely dead and until I reboot my phone signal doesn't Pop up ...and at times even though I have like 2 signal tower it shows emergency calls oly...I don't use WiFi calling as am on straight talk.but the WiFi calling feature suddenly pops up in the notification bar giving an error message u can't swipe that off the notification bar too u gotta go to MORE in settings and switch on and switch off the WiFi calling feature to remove the error msg from the notification bar .
Signal keeps fluctuating call clarity is a lil bit poor comparing it to my old lg g2 . macro focus doesn't work at all u can't focus a thing that's really close in auto. I dono what to do with this phone.it just doesn't satisfy the basic need of a phone voice calls and message(messages take a long time to send ).

vickytarunl said:
....but the WiFi calling feature suddenly pops up in the notification bar giving an error message u can't swipe that off the notification bar too u gotta go to MORE in settings and switch on and switch off the WiFi calling feature to remove the error msg from the notification bar .....
Click to expand...
Click to collapse
I see the same issue. I have created a thread for it. Not sure how widespread the issue is
http://forum.xda-developers.com/zte-axon/general/wifi-calling-notification-issues-b25-t3290959

Coldheat1906 said:
Trying posting to their Twitter account and report the issue, that is how i got their attention. Also when you call them (here in the USA) tell them that you have already done a reset on your phone and that did not resolve the issue!!!
Click to expand...
Click to collapse
Again, not worth my breath. If you check the new thread someone called up ZTE about the issue and they blamed it on T-Mobile (which is complete and utter BS). When I called about the camera issues they tried to blame it on Google. Why waste my time to be told lies? The support is completely s***.

gflash2015 said:
Again, not worth my breath. If you check the new thread someone called up ZTE about the issue and they blamed it on T-Mobile (which is complete and utter BS). When I called about the camera issues they tried to blame it on Google. Why waste my time to be told lies? The support is completely s***.
Click to expand...
Click to collapse
Well hopefully ZTE will come out with a fix really soon, I don't think that they want to lose the users they have.......

Loss of at&t signal
In one location that I frequent I always sit there without a cellular signal while people around me are using their cell phones

LTE signal strength sporadic
My Pro shows a few bars for a couple seconds,then NO SIGNAL for a few seconds. ZTE is not fixing this problem? It has been going on since January. Now is September.

For those with this issue, does a factory reset change this behavior, or at least the frequency of it?

No 5GHz wifi networks detected nor able to transmit 5GHz hotspot

First off the oligitory i have this phone, P20 pro currently rooted running EMUI 8, stock rom, stock kernel, magisk
Such a weird problem as the title says I can't detect or connect to any 5GHz wifi. I have tried to force connect via "Add Network" function. I have reviewed some files inside /etc that were suggested in a P20 lite thread, can't remember where they were/name, but the "enable 5GHz = 1". Something that is tied to it also, is that I can no longer transmit the hotspot on the 5GHz band, inside the hotspot advanced settings tab.
Now for the things that changed before i noticed no 5GHz networks.
-Changed the 5GHz hotspot to 2.4GHz to penetrate a wall better.
-Traveled to Honduras, switched networks to claro while in Honduras.
I am thinking it might be a geolocation type restriction as ihave never had this happen anywhere else before. It will also be about a week or so till I get back state side to hook the phone back to T-Mobile to see if that changes things. Might be tied the the GPS somehow, might be a stretch but i don't know.

1slotrk said:
First off the oligitory i have this phone, P20 pro currently rooted running EMUI 8, stock rom, stock kernel, magisk
Such a weird problem as the title says I can't detect or connect to any 5GHz wifi. I have tried to force connect via "Add Network" function. I have reviewed some files inside /etc that were suggested in a P20 lite thread, can't remember where they were/name, but the "enable 5GHz = 1". Something that is tied to it also, is that I can no longer transmit the hotspot on the 5GHz band, inside the hotspot advanced settings tab.
Now for the things that changed before i noticed no 5GHz networks.
-Changed the 5GHz hotspot to 2.4GHz to penetrate a wall better.
-Traveled to Honduras, switched networks to claro while in Honduras.
I am thinking it might be a geolocation type restriction as ihave never had this happen anywhere else before. It will also be about a week or so till I get back state side to hook the phone back to T-Mobile to see if that changes things. Might be tied the the GPS somehow, might be a stretch but i don't know.
Click to expand...
Click to collapse
Can other mobile phones find 5Gwifi?

Yes they can. MANY other devices can find and connect to the WIFI. I have got an update after taking the phone out of airplane mode i was able to switch the hotspot back over to the 5GHz. Still cannot connect or find the 5GHz network

1slotrk said:
Yes they can. MANY other devices can find and connect to the WIFI. I have got an update after taking the phone out of airplane mode i was able to switch the hotspot back over to the 5GHz. Still cannot connect or find the 5GHz network
Click to expand...
Click to collapse
Happen to me few days ago after Pie update. It can't find my hotspot created from my Redmi Note 5 Ai over 5Ghz. But it still can find my office 5Ghz network.
Fixed after rebooting the phone. Now it can see both network

So I want to close this thread out. As soon as I connected back to a stateside 4g carrier, the phone decided to re-enable the 5ghz side of the wifi. All of this happened all on its own. I made sure to check it within a short time off reconnecting stateside. Crazy stuff.

Constant notifications "Wi-Fi Calling preferences updated to optimize network exp."

Constant notifications "Wi-Fi Calling preferences updated to optimize network exp."
So, aside from the common touchscreen and proximity sensor issues, I'm getting this notification constantly that is driving me crazy. If I swipe it away it comes back many times per day. It can't be disabled. I've seen reports of it, but it's not widespread. I've not had this issue on any of my other phones, Samsung or otherwise. The only way to get rid of it is to turn off Wi-Fi Calling. I suppose it could possibly be an issue with the wireless in my home. I use an eero router system. But like I said, it works with all my other devices no problem. Anyone else get this?

what carrier?
so notification pops up only when the wifi-calling is on?
try this:
download samsung members app from galaxy store, click get help (bottom), send report. once you submit a ticket, samsung will be able to tell you what is causing the issue.

Yeah I hate that it does this

anaconda_bamn said:
what carrier?
so notification pops up only when the wifi-calling is on?
try this:
download samsung members app from galaxy store, click get help (bottom), send report. once you submit a ticket, samsung will be able to tell you what is causing the issue.
Click to expand...
Click to collapse
I'm on T-Mobile. And almost every instance I could find of this issue on a Samsung device (via google search), the user was also using T-Mobile. And yes, it only happens when WIFI calling is enabled.

comp101inc said:
Yeah I hate that it does this
Click to expand...
Click to collapse
Are you also on T-Mobile?

T-Mobile here, and also having the same issue. I just muted/Silenced all the notifications, but they still pop up in the bar.

I have seen it a couple of times at home (also on T-Mobile), but this past weekend, when using a car hotspot (AT&T), it kept showing up over and over again.

S20 FE Unlocked purchased from Samsung directly. Just transferred from Verizon to T-Mobile. At my home, cellular signal is so weak that the phone is basically unusable for calls. Wi-Fi calling is a necessity so I set the Wi-Fi Calling network preference to "Wi-Fi preferred". It doesn't take long for these notifications to show up when the phone changes back to "Cellular preferred" mode on its own. My work around is to turn on Airplane Mode, wait for it to engage, then re-enable Wi-Fi. This works to keep Wi-Fi calling active and stops the constant notifications. I just have to remember to de-select Airplane Mode when I leave the house. A big PITA.
When I was on Verizon the phone would remain in whatever network preference I selected without issue.

i have a workaround for this using tasker, the catch being that you need to have the android 11 (one ui 3.0) update. if you're still on android 10, the custom setting this watches for doesn't exist yet...it was only introduced in the android 11 update.
Unlocked Galaxy S20 WiFi Calling Issues
Use tasker (or another automation app) to stop your phone from randomly changing the Unlocked Galaxy S20 WiFi Calling preferences!
www.grecobon.com

Wifi doesn't work during call!!

I have this SMG 7810 variant of S20 FE. The problem I noticed now is that whenever I am in call for more than few minutes, then the Wi-Fi seems to not working.. what may be the cause for this? I tried to manipulate some settings here and there, but nothing seems to solve the problem. Is anyone else having the same problem?

As in the wifi disconnect's you mean? I have been having WiFi randomly but regularly disconnect on my SM-G781B (Uk) 'just' using wifi. I know data (3/4/5-G) wont work if you are on a voice call, but afaik Wifi should not be effected.
Thinking out of the box, you might have toi disable the calling over wifi if its enabled on your particular model and see if that helps.

b1k3rdude said:
As in the wifi disconnect's you mean? I have been having WiFi randomly but regularly disconnect on my SM-G781B (Uk) 'just' using wifi. I know data (3/4/5-G) wont work if you are on a voice call, but afaik Wifi should not be effected.
Thinking out of the box, you might have toi disable the calling over wifi if its enabled on your particular model and see if that helps.
Click to expand...
Click to collapse
I don't have any option named calling over WiFi..The Wi-Fi remains connected but can't do anything. that's a weird problem that I'm having

entirely unwatched and therefore untested
EDIT:this is of no use for your problem, sorry!