Develop Bugs

cannot make calls via wifi calling, but can recieve texts/calls and send text help

I have a TMo galaxy s3. It is running 4.3 firmware. My wifi calling does not allow me to make calls although sometimes I can call my voice mail using wifi calling.
I can however receive calls and texts as well as send texts via wifi calling.
Cellular based calls work fine.
TMO seems to think the phone is defective, this phone is a replacement I just got and they are sending me a new one.
If the new phone experiences the same problem I am going to need some advice to fix it. I must use wifi calling in my house, tmo coverage here is terrible.

As it is, overall, I had nothing but problems with WiFi Calling over Stable Wireless. So I had given up on that. If you really have signal issues, then please see if your Router is capable of prioritizing your phone's traffic over other devices.

Perseus71 said:
As it is, overall, I had nothing but problems with WiFi Calling over Stable Wireless. So I had given up on that. If you really have signal issues, then please see if your Router is capable of prioritizing your phone's traffic over other devices.
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Thanks for the response.
Wifi calling works fine on my G2 with no issues at all.
It works fine on this S3 except for the whole making calls thing. It just instantly ends the call the second the call connects.

In that case follow part 2 of my last post.

Mobile data sticks even on Wifi

I'm having this strange issue that I've never before seen on Android. Whenever I'm connected to Wifi, the phone seems to maintain a mobile data connection. Also, I'm on T-Mobile with wifi calling enabled, and it seems to stick to the cellular network even with wifi on. Am I the only one?

Ive got something similar, my battery stats show Wi-Fi is on even though its off. Rebooting the phone sorted it out.

Prasad said:
I'm having this strange issue that I've never before seen on Android. Am I the only one?
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elvinrush said:
Ive got something similar, my battery stats show Wi-Fi is on even though its off..
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Did you, guys, clear those two? Please!

Oh that makes sense. Thx

Prasad said:
I'm having this strange issue that I've never before seen on Android. Whenever I'm connected to Wifi, the phone seems to maintain a mobile data connection. Also, I'm on T-Mobile with wifi calling enabled, and it seems to stick to the cellular network even with wifi on. Am I the only one?
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My M8 does this, so I would expect the M9 to do this as well. However the mobile data is not used; the icon for mobile data just stays up. It passes data on WiFi when a WiFi connection is available. The WiFi icon is the only one that comes and goes.
I have unlimited calling so I don't use the WiFi calling, can't comment on that.

My mobile radio stays active even while I'm on WiFi calling. Which, I'm pretty sure the mobile radio should completely turn off..
Mobile data icon stays on as well even without wifi calling, same as you.

I think the stickied mobile data icon is a non-issue, but the fact that it sticks to cellular network, pointlessly draining excess battery (especially in a region with poor network connectivity) when Wifi calling is enabled, is seriously annoying.
jauhien said:
Did you, guys, clear those two? Please!
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Both settings are unchecked, like in your screenshot.

Just got mine too.
Am noticing the same problem. Mobile data stays on.
Hopefully there is a fix coming out?

Figured it out (For T-Mobile WiFi calling variants only)
Go into WiFi Calling settings (there should be an icon in your status bar)
Select the bottom "Do not use Cellular". This will disable cellular when WiFi/WiFi calling is enabled.
Cellular was enabled for calling handoffs (when you leave a WiFi calling area, the call gets handoff'd to the network)

wifiguru said:
Figured it out (For T-Mobile WiFi calling variants only)
Go into WiFi Calling settings (there should be an icon in your status bar)
Select the bottom "Do not use Cellular". This will disable cellular when WiFi/WiFi calling is enabled.
Cellular was enabled for calling handoffs (when you leave a WiFi calling area, the call gets handoff'd to the network)
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Nah. That solves nothing. I don't want to be disconnected when leaving Wi-Fi. I just want cellular to be off when in Wi-Fi range, which was automatically managed with the same setting on previous phones.

Prasad said:
Nah. That solves nothing. I don't want to be disconnected when leaving Wi-Fi. I just want cellular to be off when in Wi-Fi range, which was automatically managed with the same setting on previous phones.
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Correct, all that setting does is completely disable cellular. Even if you leave Wi-Fi, or disable it.
On all previous T-Mobile phones with Wi-Fi calling using "Wi-Fi preferred" it would completely disable the cellular radio.
Now, when I have poor signal but am using wifi calling, my phone is constantly searching for signal. Switching between 2g/4g/lte.

Yeah, you guys are correct.
Left home this morning, no Cellular.
Well, shoot...

Boo

Will it support T-Mobile WiFi Calling?

Will it support T-Mobile Wi-Fi Calling? I know Android M supports WiFi calling natively but will the carriers (T-Mobile in particular) need to do anything to allow it?
WiFi calling is very useful to me at home where cell signal is very poor.

sirxdroid said:
Will it support T-Mobile Wi-Fi Calling? I know Android M supports WiFi calling natively but will the carriers (T-Mobile in particular) need to do anything to allow it?
WiFi calling is very useful to me at home where cell signal is very poor.
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Out of the box, at this moment, I don't think it does. However T-Mobile got it working on the Nexus 6 so I don't see why they couldn't add it with an update either before or after they ship. Think positive :thumbup:
Edit: found this from another thread in general section
"It’s also worth mentioning that*T-Mobile has already said*that the Nexus 5X and Nexus 6P should have Wi-Fi Calling support at launch. While it’s expected to be turned off by default, T-Mo has said that after you pop in your SIM and hook onto the network, you should be able to turn the feature on."

Google or T-Mobile said via Twitter or the AMA or somewhere that it does support WiFi calling out of the box, but you need to set it to be on when you get your device - it isn't on by default.
The TBD support is for T-Mobile VoLTE/Band 12, which Google said they hope will be ready to go by ship day.

Ajfink said:
Google or T-Mobile said via Twitter or the AMA or somewhere that it does support WiFi calling out of the box, but you need to set it to be on when you get your device - it isn't on by default.
The TBD support is for T-Mobile VoLTE/Band 12, which Google said they hope will be ready to go by ship day.
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Excellent. Both will help.

Do texts go over wifi as well with wifi calling enabled? At work I only have access to wifi or Sprint (because I am in a basement of a building) and it has a Sprint DAS antenna system installed. I was thinking of switching to Project Fi due to it being on Sprint's network but if texts can go over wifi with T-mobile I would probably go with them since it would open me up to a huge choice of phones in the future (I kind of want to try a windows phone sometime)

Evo_Shift said:
Do texts go over wifi as well with wifi calling enabled? At work I only have access to wifi or Sprint (because I am in a basement of a building) and it has a Sprint DAS antenna system installed. I was thinking of switching to Project Fi due to it being on Sprint's network but if texts can go over wifi with T-mobile I would probably go with them since it would open me up to a huge choice of phones in the future (I kind of want to try a windows phone sometime)
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Yes, texts will go over wifi. Hurry with that Windows phone, before the platform dies completely

Here's the Twitter post where I saw confirmation from T-Mobile on Wi-Fi calling: https://twitter.com/TMobile/status/648919023158206464
The initial question was on band 12 support (hoping we get this soon), but below there's a question on Wi-Fi calling to which they said yes. This was one of the main reasons I'm switching to one of the new Nexus phones - most phones support it on their stock ROMs, but once you get sick of stock and switch to a custom ROM you have to give up Wi-Fi calling.

Question for those of you on T-Mobile...
We all know WiFi calling is enabled, BUT, has anyone seen or regularly sees any kind of indicator that they're actually connected through WiFi calling when on a call?
I have seen twice on the signal tile, it say "T-Mobile WiFi calling". But that's it. I have the setting set to WiFi preferred and I even have the T-Mobile WiFi calling Asus router, but I don't know if it's actually using WiFi calling it not.
If I have zero signal indicated on the signal tile, but WiFi on, I'll get a message telling me to connect to a wireless network when I try to place calls.
I'm also assuming that means the signal indicator tile serves a dual purpose in regards to also showing WiFi signal strength. Because when I'm on WiFi, if I switch on " cellular preferred" (in WiFi calling settings), I'll see the LTE symbol next to the signal icon in the tile, but If I switch to "WiFi preferred", any cellular symbol (LTE, H, 3G) goes away.
On a side note, if you're in airplane mode, you can't make a phone call, even with WiFi on. On my S6 edge, I could, as long as I was connected to T-Mobile WiFi calling. But the phone would let you know with a status bar icon.
I really need WiFi calling in some places at work and I dumped the S6E partly because of the 5X utilizing WiFi calling, so that's why I've wasted all you folk's time in reading this long post. ☺

Well, son of a *****, look what finally popped up...

It was enabled by default as soon as I booted with the TMO sim and ran the update.

Great to read...looking forward to trying it out when it arrives.

minnemike said:
It was enabled by default as soon as I booted with the TMO sim and ran the update.
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As was mine, but it didn't seem to want to work. I had "cellular preferred" set, but it seemed to hold onto the cell signal too much and not want to switch over. I set it to "WiFi preferred" but it still wasn't connecting yesterday. Today however, it's been all good with WiFi preferred. So it might have just been my work's network yesterday.
I still got to see if the phone will hand off the call to cellular before I leave it on WiFi preferred. I'm guessing it only will if I'm on band 12, but I'll test it anyways.

No internet when I'm on voice call

Hi folk, so I've something strange: when I'm on voice call (make or receive) my network change from 4G to H/H+ and internet doesn't work. When call finishes, network go back to 4G and I'm able again to surf internet.
I called my mobile company, Vodafone IT and they told me it's a phone problem (they don't use VoIP) so I contacted Google assistance but since my phone is magisked they can't help me.
Any idea?

last_nooby said:
Hi folk, so I've something strange: when I'm on voice call (make or receive) my network change from 4G to H/H+ and internet doesn't work. When call finishes, network go back to 4G and I'm able again to surf internet.
I called my mobile company, Vodafone IT and they told me it's a phone problem (they don't use VoIP) so I contacted Google assistance but since my phone is magisked they can't help me.
Any idea?
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This is a normal behavior and has nothing to do with your phone or Magisk: If your carrier does not support VoIP, the phone has to switch to 3G or even 2G to make the phone call. After the call has ended, it switches back to LTE.
I know that this can be a PITA, especially when you are supposed to take part in a Skype or Webex meeting with screen sharing and you are sitting in a hotel with bad WIFI. Then you use the phone as WIFI hotspot. As soon as you call in, your web meeting is unreliable.
Been there, done that. There is no way around this, the only thing which works for me is to take part in the call via my notebook instead of calling in via the phone. Then LTE stays - as long as nobody calls you

@BabelHuber thank you for your answer.
But why this happens?
Why isn't possible to have call and 4G/LTE at same time?

last_nooby said:
@BabelHuber thank you for your answer.
But why this happens?
Why isn't possible to have call and 4G/LTE at same time?
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Because the LTE standard simply does not support voice calls.
Hence if you don't have VoIP, the phone has to switch to 2G or 3G. The alternative would be not being able to perform voice calls at all!

WiFi Calling Issues

I have terrible cell signal at home, so rely on wifi calling to make my phone function as, well, a phone. However, recently something has changed where WiFi calling no longer appears to work even though I have it enabled. Actually, that's not strictly true, it works, but only randomly and seems to not be available the majority of the time.
Previously, as I could often get 1 bar of signal, what I would do is enable airplane mode, then turn wifi back on to get wifi calling working. However, this no longer works. I have reset network settings, re-enabled and registered Wifi calling, checked with my provider that Wifi calling is available, used the Samsung Band Selection app to set to prefer using Wifi calling over cell data. I'm sure there are other things I have tried, ultimately, nothing seems to work.
Wifi speeds are good, I'm at the end of my rope with it.
It's a Sprint (T-Mobile) phone, still on a Sprint SIM here, spent an hour with support yesterday and they basically had me repeat everything I have already tried before telling me they will have to escalate it.
Anyone else having issues? Any idea what to do?
Thanks.

Not sure if this will help, but you might want to look into what port wifi calling uses and make a port forwarding entry in your modem. I just remember long ago when tmobile had their TM-AC1900 router,something about it having certain ports open to allow for wifi calling. This was before they released their 4g lye personal cellspots.....this was a wifi cellspot

Wi-Fi Calling on a corporate network
Find the technical details to set up a corporate environment for T-Mobile Wi-Fi Calling.
www.t-mobile.com
Archived - NETGEAR Communities
community.netgear.com
These may help.....
P.s i have Xfinity for home internet and tmobile for a carrier.....my wifi calling has been weird at times out of the home while connected to Xfinity hotspots......and long story short, now that Xfinity has their own cell service they may be crippling ports....just a thought....manually forwarding those wifi calling ports should fix that if that's the case....