Develop Bugs

Incoming callson WiFi calling goes straight to Voicemail

I love the phone and having the hardest time resisting turning the phone back in. I'm on my 2nd S3 and my third Sim card. Everything appears to be going well but I noticed that when my phone is in WiFi calling mode, incoming calls go straight to voice mail. I don't get an alert or anything. If they leave a voicemail, I get that. I searched other phones that have had this issue not just the S3. I am running stock OS but I am rooted.
Can anyone else verify that there incoming calls are working on Wifi Calling ? Any ideas on what I could try ? outgoing calls work fine.
EDIT: Sometimes calls go through, sometimes it doesn't. When it does go through, I can't swipe the green button to answer. It goes through the swipe motion but nothing happens. When I am off of WiFi calling, I can receive calls correctly and I can properly swipe to answer them

soljaofjesus said:
I love the phone and having the hardest time resisting turning the phone back in. I'm on my 2nd S3 and my third Sim card. Everything appears to be going well but I noticed that when my phone is in WiFi calling mode, incoming calls go straight to voice mail. I don't get an alert or anything. If they leave a voicemail, I get that. I searched other phones that have had this issue not just the S3. I am running stock OS but I am rooted.
Can anyone else verify that there incoming calls are working on Wifi Calling ? Any ideas on what I could try ? outgoing calls work fine.
EDIT: Sometimes calls go through, sometimes it doesn't. When it does go through, I can't swipe the green button to answer. It goes through the swipe motion but nothing happens. When I am off of WiFi calling, I can receive calls correctly and I can properly swipe to answer them
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Ah-ha, you just solved a mystery for me! I like to have my phone automatically connect to any wifi in my usual hangouts to save data. I kept wondering why I was missing calls without hearing my ringtone. I have a theory on what is happening. Back on my old Vibrant, wifi-calling could not work on slower networks. I could get it to initialize but never could it actually make a call. I noticed this when up in the mountains at a lodge that had very slow internet. Maybe it's the same issue? Hopefully others will chime in.
Not sure if this a slow network issue or and ICS issue. My S3 does this also and is frustrating since I auto connect to wifi at home and work. Keep missing damn calls. My S2 started doing the same thing when I updated from GB to ICS. Maybe its a Samsung and ICS thing now that I think about it because the wife and kids all run ICS on HTC Amaze without issue.
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Disappointing. Are you on T-mobile? (I expect yes as this, to my understanding, is the only US network licensed to use wifi calling?)
I am thinking of buying an S3 but I have to have wifi calling working on UK operator orange.
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I think most of these threads are locked because XDA is trying to separate them all. Anyways, this is the only way I could respond. Since my first post, I have had more positive experiences with wifi-calling. I think it may be a little of both, slow connection and this newer implementation. On a slow connection it definitely wont work correctly which is what I would expect. What I mean is you can't successfully answer or make a call as the phone app will just hang. Going straight to Voicemail is another mystery altogether. I have 4g internet at home so there is no reason I can think of for that to happen. But like I said since my first post I have successfully made and answered several calls from home using wifi-calling and even a few from a location that had decent internet. Call quality was decent for what it is.
Guys, take a look at this thread. It concerns wifi signal dropping and re-enabling. That would certainly explain why some of the calls made to me when I was at home on wifi went to Voicemail even though I have 4g. I did notice some of this last week.
http://forum.xda-developers.com/showthread.php?t=1790187

Not sure if this a slow network issue or and ICS issue. My S3 does this also and is frustrating since I auto connect to wifi at home and work. Keep missing damn calls. My S2 started doing the same thing when I updated from GB to ICS. Maybe its a Samsung and ICS thing now that I think about it because the wife and kids all run ICS on HTC Amaze without issue.

Wifi Calling
sflagg73 said:
Not sure if this a slow network issue or and ICS issue. My S3 does this also and is frustrating since I auto connect to wifi at home and work. Keep missing damn calls. My S2 started doing the same thing when I updated from GB to ICS. Maybe its a Samsung and ICS thing now that I think about it because the wife and kids all run ICS on HTC Amaze without issue.
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Disappointing. Are you on T-mobile? (I expect yes as this, to my understanding, is the only US network licensed to use wifi calling?)
I am thinking of buying an S3 but I have to have wifi calling working on UK operator orange.

This happens on sprint phones as well...

I see this thread is open again. My experiences with wifi-calling have bore out what I thought: A weak signal will cause problems. I only wish that every call went to voicemail. What happens often with me is that wifi-calling will partially work, as in I can answer a call but the person can't hear me at all and I may catch one or two words from them. If they terminate the call, the phone app is fine, but if I terminate the call, the phone app hangs and freezes everything! Today it was so bad I had to pull the battery and reboot. Maybe wifi calls going to voicemail is an imperfect function that Samsung or rather T-Mobile built into the app. It kinda makes sense as this app could never complete a wifi call if you were connected to slow internet when it was a separate app. In any case I would rather have my wifi calls go straight to voicemail (and get a pop-up notification) than have the app try to work but wind up hanging my phone. What do you guys think?

I don't know about slow networks. I've already exchanged one T-Mobile S III because of Wi-Fi calling problems. My replacement works much better on my work network than it does on my home network and it is much, much slower than my home network is.

dcugooner said:
I don't know about slow networks. I've already exchanged one T-Mobile S III because of Wi-Fi calling problems. My replacement works much better on my work network than it does on my home network and it is much, much slower than my home network is.
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This isn't particularly good news for me. If it isn't software problem that manifests when coupled with a slow network then a future update won't fix it. That's what I was hoping the problem would turn out to be. If its hardware, then the time I have to do something about it is limited as I dropped my first phone and the replacement has a limited warranty, I think. Plus, I've paid to have invisi-shield placed on the front and back and would have to eat that cost if I get another replacement.

Epic Fail
I have this issue and am at my wits end to resolve it. Wifi calling is a major feature that worked fine(except echo) with my Vibrant. However, nothing I have tried will fix my ability to answer calls on WiFi. I have the SIM from the GS3 box. My E911 address exists since my bb8900. WiFi Power Save is off. All routers I use, Linksys E4200 and Linksys WNR1000, Linksys 614. Wireless N and G. T-mo CS could not help. I understand that the WiFi calling changed from UMA to IMS. No separate app. GS2 users with same issue. Anyone with a clue? Please help.

IrieBro said:
I have this issue and am at my wits end to resolve it. Wifi calling is a major feature that worked fine(except echo) with my Vibrant. However, nothing I have tried will fix my ability to answer calls on WiFi. I have the SIM from the GS3 box. My E911 address exists since my bb8900. WiFi Power Save is off. All routers I use, Linksys E4200 and Linksys WNR1000, Linksys 614. Wireless N and G. T-mo CS could not help. I understand that the WiFi calling changed from UMA to IMS. No separate app. GS2 users with same issue. Anyone with a clue? Please help.
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how did you turn off the wifi power save?
I experience the bad quality calls on wifi, at my workplace it is perfect, but at my home, its terrible.
my home network is faster than my workplace.
I think this is something to do with the firewall as well.
and I couldn't find the way to turn off firewall on the dam verizon fios actionnet router.
---------- Post added at 01:27 PM ---------- Previous post was at 01:27 PM ----------
you can also try to broadcast the wifi on channel 3 only, that helped me in my case.

WPSM
There is a link earlier in this thread to another XDA thread. Phone app --> *#0011# --> menu button --> WiFi--> Press WPSM On/Off button.
My GS3 would drop a WiFi signal 3 inches from the router at work and 3 feet from the router at home. At least THAT is fixed now. However, I don't seem to get the same WiFi signal range as my Vibrant did using the same routers Trying the channel 3. I do have a few setting set to auto at least on my home router.
-greenboy- said:
how did you turn off the wifi power save?
I experience the bad quality calls on wifi, at my workplace it is perfect, but at my home, its terrible.
my home network is faster than my workplace.
I think this is something to do with the firewall as well.
and I couldn't find the way to turn off firewall on the dam verizon fios actionnet router.
---------- Post added at 01:27 PM ---------- Previous post was at 01:27 PM ----------
you can also try to broadcast the wifi on channel 3 only, that helped me in my case.
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when my wifi calling was giving me issues i had to go on the tmobile site and set my area for 911 calls for the wifi calling. after that it worked flawlessly

duhitsrandy said:
when my wifi calling was giving me issues i had to go on the tmobile site and set my area for 911 calls for the wifi calling. after that it worked flawlessly
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Click to collapse
Yes, that's required, but not the underlying issue of the thread.

I've had wifi calling weirdness too. I called my sisters Verizon cell and there was no tone but after xx seconds it got her voicemail. When I call my phone on my house phone (Comcast) my phone rings but there's no tone on the house phone!

I NEVER get a ring. Just someone picks up our voicemail does.
Sent from my SGS3 Stock Rooted & Odexed
I love this thing!

Note II drops WIFI Calling??

Hey I'm a 1st to T-Mobile i'm testing it out before I switch all my lines from Verizon. The question I have is that both the Note II and the GS3 that I have seem to drop the Wifi calling feature randomly. I thought at 1st it may have been some sort of power saving option but it seems to happen in frequently. (Doesnt matter if I'm close to the Router or not)
Is this common? Or am I the only one that has had this happen?
Thanks for any input!
-Scoob

Mine does the same thing I just turned off the wi fi calling app and it now works fine
Sent from my SGH-T889 using xda app-developers app

somethinboutpat said:
Mine does the same thing I just turned off the wi fi calling app and it now works fine
Sent from my SGH-T889 using xda app-developers app
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I'm not sure what you mean by turning the App off? When turning the WIFI calling app off does that not mean you are unable to use the feature?? LOL- I have to have this as I have zero reception at my home.
Thanks for letting me know!
-Scoob

scooby-snack said:
Hey I'm a 1st to T-Mobile i'm testing it out before I switch all my lines from Verizon. The question I have is that both the Note II and the GS3 that I have seem to drop the Wifi calling feature randomly. I thought at 1st it may have been some sort of power saving option but it seems to happen in frequently. (Doesnt matter if I'm close to the Router or not)
Is this common? Or am I the only one that has had this happen?
Thanks for any input!
-Scoob
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Click to collapse
Same here
Sent from my SGH-T889 using xda app-developers app

This is happening to me as well.

@ scoob go to setting, more setting, deselect the wifi calling app and it should work for you my coverage at my place is between 0 and 1 bar so this should help
Sent from my SGH-T889 using xda app-developers app

mine goes on and off on both my new note 2 and my wife's new galaxy s3. really aggravating. worse on my phone, when in wifi calling, it only answered calls like 1 out of every 10 times, otherwise they went to voicemail. I took the sim out of mine, then put it back in and pushed it in and out and in the holder a few times and now it seems to receive calls in wifi mode but still always in and out and error to connect and such.

My experience with Wifi-Calling has been nothing but troublesome. It's really not reliable at all, sometimes calls comes through sometimes don't.. and when it does come through I can hear the caller but caller cannot hear me. This is quite common problem with wifi-calling and i given up.
If you get even a 1bar of reception near by the window, I suggest calling T-Mobile and getting their Cel-Fi device (Free of charge but has to return when you leave T-Mobile). 1~2 bar by the window will give you full 4bar reception throughout the house on 4G. Only requirement is that you must be living in single house, can't ship out to house that are connected by or close by. I live in townhouse and I just told them I live in single house and got the device in 3 days. =)

Wi-Fi calling is a disaster. For me, incoming audio drops constantly, but the party I am calling can hear me fine. On other occasions, the call will just randomly drop. Came from a Sensation where Wi-Fi calling was perfect. There does not seem to be any resolution... I have spent hours talking to tech support and they have replaced the device with no improvement. I have also had my ISP out and they have verified that my connection is fine. I have even changed the router out... same issues.

With my wifi calling, as soon as I turn kt kn my bars at home would drop where I would hardly get any service. As soon as I turn wifi calling off I magically get bars. So I leave it off and now I get bars pretty much everywhere I go....almost
from my Galaxy Note 2 using Tapatalk 2

Nellyinda803 said:
With my wifi calling, as soon as I turn kt kn my bars at home would drop where I would hardly get any service. As soon as I turn wifi calling off I magically get bars. So I leave it off and now I get bars pretty much everywhere I go....almost
from my Galaxy Note 2 using Tapatalk 2
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Click to collapse
With wifi calling on, it's suppose to drop signal bars to nothing. You have to go by the wifi bars instead.

Wifi also greatly depends on your network conditions. Cause I have the same problem but it doesnt happen to me that often after some tweaking.

Wifi Issue
I have that problem quite a bit but the signal strength on my router is good. Yesterday i had my internet company reset the cable modem and my wifi problems have decreased a lot but it is still happing. It has to deal with the wifi certificate problems on the Note 2 (Samsung). It is the same problem that I had on the GS3.
Oh well

ghost_231 said:
Wifi also greatly depends on your network conditions. Cause I have the same problem but it doesnt happen to me that often after some tweaking.
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Click to collapse
what tweaking did you do?
my internet is rock solid. only good thing about uverse service, yet this wifi calling is in and out and in and out all the time.

robl45 said:
what tweaking did you do?
my internet is rock solid. only good thing about uverse service, yet this wifi calling is in and out and in and out all the time.
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Click to collapse
not much for me, just very little. tried to set up QoS and worked pretty good. until my bro starts playing on his xbox, then im screwed on it lol

No issues here with wifi calling.

Nellyinda803 said:
With my wifi calling, as soon as I turn kt kn my bars at home would drop where I would hardly get any service. As soon as I turn wifi calling off I magically get bars. So I leave it off and now I get bars pretty much everywhere I go....almost
from my Galaxy Note 2 using Tapatalk 2
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Click to collapse
Uhh, that's the point of wifi calling, to make calls over WiFi and disable your cellular radio. If you turn on Wifi Calling, you should get a blue phone icon on the top left and your "bars" should drop to nothing as your phone turns off the cellular radio. You can still make/recieve calls/sms/mms.
I've been getting an ER01 error lately with invalid certificate, but it seems to be a T-Mobile backend problem? It happens, about 10% of the time and only on my school's network (I have a feeling, it might have to do with the sign in process there).Otherwise, it works well at my apartment.

achusaysblessyou said:
Uhh, that's the point of wifi calling, to make calls over WiFi and disable your cellular radio. If you turn on Wifi Calling, you should get a blue phone icon on the top left and your "bars" should drop to nothing as your phone turns off the cellular radio. You can still make/recieve calls/sms/mms.
I've been getting an ER01 error lately with invalid certificate, but it seems to be a T-Mobile backend problem? It happens, about 10% of the time and only on my school's network (I have a feeling, it might have to do with the sign in process there).Otherwise, it works well at my apartment.
Click to expand...
Click to collapse
i get that certificate problem at my house, not too much anymore, but I still see it. and the wifi calling does drop in and out at various times. not a huge deal for me, but the average person wouldn't deal with that.

achusaysblessyou said:
I've been getting an ER01 error lately with invalid certificate, but it seems to be a T-Mobile backend problem?
Click to expand...
Click to collapse
I've been noticing more & more problems with my service in the last two months. I called T-Mobile to fix it and whatever they did seemed to only help a little. I get times where I get frequent ER01 errors with WiFi & duplicated text messages (same text message gets received by my phone 2-3 times) for an hour or two. I used to also get errors sending texts around that time, but that appears to have gotten better.
Someone else mentioned Uverse, and my WiFi calling problems are at home & work, both of which have AT&T for internet... When I switched from their DSL to Uverse I expected less problems, but got more.

anyadike said:
I've been noticing more & more problems with my service in the last two months. I called T-Mobile to fix it and whatever they did seemed to only help a little. I get times where I get frequent ER01 errors with WiFi & duplicated text messages (same text message gets received by my phone 2-3 times) for an hour or two. I used to also get errors sending texts around that time, but that appears to have gotten better.
Someone else mentioned Uverse, and my WiFi calling problems are at home & work, both of which have AT&T for internet... When I switched from their DSL to Uverse I expected less problems, but got more.
Click to expand...
Click to collapse
Seems to be a problem that a lot of people are experiencing. Just did a quick Google search and some indication points to a possible T-Mobile back-end problem. I wonder if i call up T-Mobile and ask for wifi calling to be explicitly added to my plan if that'll change anything.

Missed calls, delayed voice mail.

Ive had my note 2 now for about a month now and the phone itself has been great. During the first week I experienced horrible signal but that has all stopped recently. I now get 4g everywhere I go around my home and work.
But.. one problem persists. Missing missed call notifications and delayed voice mails. This has been going on since I got the phone and I though it was only a wifi calling bug until today.
Multiple people have called me and left a voice mail which I will only receive once I use my phone. Ie: text/make a call. No missed call notification shows up but I will receive texts and voicemails once I actively use my phone.
I have done tests with wifi calling where my phone would be charging for a few hours and a call would go straight to voicemail. Also pinging my phone yields a 1k+ms ping response and then normal 50ms which leads me to beleive the phone goes into some sort of sleep state and has to be actively on the network to receive any call or text. I thought it was just wifi calling but now its happening without being connected to wifi.
Does anyone have any information on this type of problem?
Sent from my SGH-T889 using xda app-developers app

I had the issues you described with wifi calling. It was so unreliable that I stopped using it. On the regular cell connection I no longer miss calls.

I wish using regular cell was reliable as the coverage is great in my area. But after yesterday's problem I can't trust it anymore.
I'm back to using wifi calling and im using an app called wake lock to keep the wifi connected, as the normal no sleep when wifi setting doesn't work in the settings.
It has been 12 hours and the wifi calling icon hasn't disappeared. I've received emails and texts as well. Hopefully this can be a permanent at home solution. I wonder what causes the cell network to just drop and stay unconnected while the phones on lock though.
Sent from my SGH-T889 using xda app-developers app

hellfirex11 said:
I wish using regular cell was reliable as the coverage is great in my area. But after yesterday's problem I can't trust it anymore.
I'm back to using wifi calling and im using an app called wake lock to keep the wifi connected, as the normal no sleep when wifi setting doesn't work in the settings.
It has been 12 hours and the wifi calling icon hasn't disappeared. I've received emails and texts as well. Hopefully this can be a permanent at home solution. I wonder what causes the cell network to just drop and stay unconnected while the phones on lock though.
Sent from my SGH-T889 using xda app-developers app
Click to expand...
Click to collapse
Are you using ant task killers or battery saving apps? They can turn off your data and so many other processes, they do more harm than good.
Sent from my SAMSUNG-SGH-T889 using xda premium

I have no battery saving apps, all i use is the stock task manager for ending tasks.
UPDATE:
WiFi calling with wake lock seemed to work most of the day. I received many texts and calls from at least 5 different people over the coarse of the day. But then... I go in my garage and lose wifi signal and the phone doesn't connect to a tower and i miss someone trying to call me. Same deal.. no missed call notification and they said it just goes straight to VM without ringing. I write it off as not a big deal as long as the rest of my house wifi calling allows me to miss nothing.
I sleep for a few hours and i wake up and hit my lock screen. The screen flashes on and it shows the WiFi calling symbol.. then lags and flashes to it being gone. I then use my house phone to call it and of course.. no ringing.. straight to VM. I have also received no emails/texts during this time.
I open the battery usage and during the last 15 hours or so there are small increments of signal loss. The whole bar is yellow which isnt great but should still work. But there are small slivers missing completely, and they are identical to the WiFi usage as well. Both show the same 0 signal at the same time.
I'm at my wits end with this problem.. i have tried just about everything from factory reset, SIM reset, using WiFi calling on both my router bands, using settings to keep WiFi on when phones charging. The problem persists on 4g and WIFI. Currently I'm set to GSM only to test this issue using EDGE.
The odd thing is my brother has the same phone and although he reported a few missed calls via wifi calling, nothing as serious as my issue of several blocks of time with 0 signal at all.
I noticed the new update rolling out changes the baseband.. would this do anything to fix any issues with connectivity? Ive read numerous people with this issue using various phones/carriers and the only fix seemed to be getting a new phone number. I hope this isn't the case.

I think you might need a microcell

I'm not sure if that would really help. Like I said I have above average coverage at my house. I never had a problem with my vibrant and the other 2 lines dont have problems. This morning I flashed jedi x7 and I now have a 3g and a H+ icon. I notice that im 95% on 3g and it sporadically switches to H+ randomly for only a few seconds. Also as about 6 hours have past, my network signal in battery usage is a solid bar with no signal loss. Time will tell if that stays true.
One other thing of note, if I perform a speed test when it's on 3g.. I ping 1k+ but pull around 15mbit. When H+ is up before I start the test I ping under 100 and pull 15mbit. Perhaps the constant switching is causing me to disconnect from the tower for brief moments.
Sent from my SGH-T889 using xda app-developers app

hd calling

Well I returned my note 3 for new one. I also had problem with the signal strength bars not showing with my wifi on. Couldn't tell if I had signal or not. This never appeared until after the unexplained reboot and tmo master reset my phone. They tried to tell me that's normal. How's that normal not to know what your signal strength is or I have service. Dial to find out? My new don't have the issue. Well any way on the previous phone when I made calls it would say in green say hd calling, my new one does not say it. Do I turn it on? Or does it show up by itself?

Hmm.. Do you mean when you're on wifi the signal bars disappear? Mine does that to. Once I disconnect from wifi they come back. No issues though. I'm on a custom rom and haven't seen the HD calling you're talking about. I was off stock 10 minutes after I got home though lol. This is an old doc, but maybe this is what you were seeing, http://support.t-mobile.com/docs/DOC-5407. If that is the case it doesn't look like you do anything to turn it on.

I'm on wifi now and I have bars. The only time I don't see them is with wifi calling preference. I had the same set up with the old phone and did get any signal bars. Beats me. The hd calling still bugs me though.

Pixel 3 and Pixel 3 XL Wifi causing dropped calls and dropped mobile data

Both my wife and I have pixel 3's, I have the XL and she has the regular. Both were preordered and delivered at the same time, and we are both on AT&T. Since the beginning we have experienced random issues such as the phone dropping mobile data completely even though the signal shows LTE , and having to cycle airplane mode off and then on again to get data back. The other issue is that we both experienced call issues where our end would drop and we could not hear the other party, but they could hear us fine.
I think I may have traced these issues to WiFi causing the problems. When the data drops, I notice that my wifi is on and occurs when I am not connected to wifi (such as an unidentified network) and on LTE, or when I leave a connected WiFi area (like my house) and keep wifi on. We would have to cycle airplane mode to fix this.
For the calls, I had a call drop yesterday and when I looked at the notification bar it showed connected to wifi. I immediately turned off wifi and the call came right back. I thought this was an AT&T wifi calling issue, so I turned off wifi calling. Today, I was at the post office and had to make a call. Soon after connecting, the call dropped. I checked wifi and it showed unidentified network (not connected), so I turned off wifi. The call immediately came back.
So now, wifi is completely useless to my wife and I. Assuming I don't experience any more dropped data or calls, I cant use wifi to ensure good call quality and constant data.
Anyone else experience this? Could this be an RMA issue? Seems weird that it is happening to both phones. Is there a setting we should turn off that could be causing this?

i have a similar problem where if i am on wifi, when i get off wifi my lte or h+ will show bars but have a small x in the bars. i have to cycle airplane mode to get data back after i switch wifi off. i may just make a tasker task to do this.
i had a call from an s9 yesterday where i could hear them but they couldnt hear me. i think i was on wifi. we tried 2-3 times but he couldnt hear me. when i switched to my google voice phone number and called him, he was able to hear me fine.
there is another thread around here about similar issues. i might try to get a new sim card since this one is almost 9 years old.

dipstik said:
i have a similar problem where if i am on wifi, when i get off wifi my lte or h+ will show bars but have a small x in the bars. i have to cycle airplane mode to get data back after i switch wifi off. i may just make a tasker task to do this.
i had a call from an s9 yesterday where i could hear them but they couldnt hear me. i think i was on wifi. we tried 2-3 times but he couldnt hear me. when i switched to my google voice phone number and called him, he was able to hear me fine.
there is another thread around here about similar issues. i might try to get a new sim card since this one is almost 9 years old.
Click to expand...
Click to collapse
I may have started that original thread a while ago, but since it was more focused on the data drop thing I created a new thread to help narrow the conversation towards the wifi issue. I went to ATT when I first had the data drop issue and got a brand new sim so it is definitely not that.