Develop Bugs

[Q] Going to Canada, want to use wireless by not cellphone

I've got a stock S3 with T-mobile service and planning a trip to Canada. I don't want any roaming or connection charges while in Canada, I'll just do without the cellphone, but I still want to be able to use the S3 to connect to wireless at the hotel for Skyping, email, etc. What kind of settings will I have to change on my phone, if any, to ensure I don't get hit with any roaming or data charges while using my phone?
Thanks.

denzelnuke said:
I've got a stock S3 with T-mobile service and planning a trip to Canada. I don't want any roaming or connection charges while in Canada, I'll just do without the cellphone, but I still want to be able to use the S3 to connect to wireless at the hotel for Skyping, email, etc. What kind of settings will I have to change on my phone, if any, to ensure I don't get hit with any roaming or data charges while using my phone?
Thanks.
Click to expand...
Click to collapse
I think you can find and uncheck "data roaming" and "use packet data" in settings>>More settings>>Mobile Networks
Alternatively, you could turn on airplane mode and then just manually turn on wifi. All other radios should stay off.

Thanks. With the "support.bell.ca" method - I just don't know how cell phone connectivity would work; would I still be connected to the cell phone towers and receive phone calls (which I don't want) under roaming?
I like the second solution. I knew Airplane mode would turn everything off, but I didn't realize I could then turn wireless back on. I thought it was a all or nothing setting. Learned something useful.

denzelnuke said:
Thanks. With the "support.bell.ca" method - I just don't know how cell phone connectivity would work; would I still be connected to the cell phone towers and receive phone calls (which I don't want) under roaming?
I like the second solution. I knew Airplane mode would turn everything off, but I didn't realize I could then turn wireless back on. I thought it was a all or nothing setting. Learned something useful.
Click to expand...
Click to collapse
I edited my post thinking that same thing. I believe disabling "use packet data" does disable your connection to the network and therefore, no calls. I think using airplane mode is the more certain option though.

I agree. And I don't have a "use packet data" option under Mobile Networks, so it doesn't matter.

Just turn on airplane mode. Then manual wifi. The turn on wifi calling and check prefer that only instead of cell calls. Boom.
Sent while sleeping in chair.

See.
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Sent while sleeping in chair.

Interesting if that would work. But if you attempt to make a phone call, it says Airplane Mode is activated, turn off Airplane Mode to make a call.
Which brings up the question, can I use wifi calling while in Canada if I have wifi service?

Wifi and data problem

I have a T-Mobile htc 10 and recently updated the phone that was sent by T-Mobile (1.81.531.4). Lately, when I'm connected to wifi and leave the range of the wifi the phone will not connect to the data network. It will show 4g (big icon) with 3/4 bars but there is no connection. I can't send text messages and the internet says I have no connection and the web page won't load.
Turning mobile data on and off won't do anything. I have to turn on airplane mode and then turn it on. That's when the mobile data starts working.

I am having that issue as well. I rolled back and the problem went away. Must be something in that update.

How did you roll back? Are you rooted?

Make sure "Auto switch to mobile network" is checked under your advanced WiFi settings.
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Sent from my HTC 10 using XDA-Developers mobile app

I'm also seeing the same thing. Has this issue been resolved? I've just applied "Auto switch to the mobile network" so only time will tell.
UPDATE: applied "Auto switch to the mobile network" unfortunately that did not fix the issue.
My carrier is T-Mobile
Build: 1.81.531.4

I have an unlocked HTC10 and use it on Tmobile, I had that exact problem with mine also after an update which i dont remember the number, but after the last update from last month (1.91.617.1) it got fixed, i was able to make it work with a trade of a little battery life.
My fix:
Go to developers options and enable the "Cellular data always active" that way even when you are connected to wifi the phone will leave the 4g/Lte connection open.
Try that at least until they release the OTA for your phone
Let me know if that works.. good luck!

kelbaez said:
I have an unlocked HTC10 and use it on Tmobile, I had that exact problem with mine also after an update which i dont remember the number, but after the last update from last month (1.91.617.1) it got fixed, i was able to make it work with a trade of a little battery life.
My fix:
Go to developers options and enable the "Cellular data always active" that way even when you are connected to wifi the phone will leave the 4g/Lte connection open.
Try that at least until they release the OTA for your phone
Let me know if that works.. good luck!
Click to expand...
Click to collapse
kelbaez: Thank you I'll try enabling the "Cellular data always active". I'll post back if it works or not. (9/23/2016)
UPDATE: 9/25/2016 Since I applied kelbaez fix on 9/23/2016 phone has not had an issue. Until today.
While traveling (phone was never connected to a wifi) phone seem to have lose connection with T Mobile's data. Enabled and disabled airplane mode fixed it.
However, I still feel kelbaez has fix the issue of being at home and connected to wifi and with his fix I have not as of yet lost data connection. FYI, prior to his fixs at less once or twice a day.

Glad I stumbled upon this thread..been having the same issues. Hope it gets fixed in an update.

WiFi connection while data is on

Apparently Pixel phones does not route connections correctly. I have an issue with a wifi device in my car. My car connects to phone through wifi for music and other services but since this wifi has no internet, my phone automatically keeps data on. When this happens, the car app does not detect the connection because apparently the Pixel phone routes all data through only the "Active connection" which is cellular in this case, if i turn off data, then the app works. This is a petty as its' working fine with other phones like Samsung or iPhone.
Also the car actually needs the data connection on my phone for navigation, update, etc... and with this scenario, it does not work.
I made a test at home with a router. I connected the phone to router which has no internet connection, i then opened chrome and put the gateway address and it did not open the router page. I then disabled data and it was able to open the router page. Again, this is only with the pixel; other phones work even if i don't disable data.
I have seen similar issues with also other WiFi devices. See below link
https://forum.dji.com/thread-103340-1-1.html#post_858055
Any thoughts or nothing can be done with this pixel phone.

Under settings- network and internet- wi-fi- wifi preferences- advanced there is a setting called switch to mobile automatically. Turn this off, it turns mobile data on when there is no wifi but you are connected to WiFi. Give it a try and report back.
Sent from my Pixel XL using Tapatalk

Where? I don't see that. Check below screenshot.
https://ibb.co/6BwH9p9
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I have an OG Pixel running newest Build, non rooted and this is my screen.
Sent from my Pixel XL using Tapatalk

thats very strange. i have also latest build. just updated today with February security update?

Yep, I have the February update just got it yesterday. this options been on there for quite some time for me I don't know if it's a Verizon thing but I remembered seeing it for some time.
Sent from my Pixel XL using Tapatalk

so looks like i am stuck with the wrong phone as there is no solution

One more option not sure it will be work but worth a try. In developer options (if you don't know how to enable it Google it) under networking there is a toggle for mobile data is always active. Mine is toggled on, see if yours is and change that option to see if it makes any difference. If it's off turning it on may bring in the other option in the settings menu, if it's already on, turning it off may do the same thing as the other option in the settings menu does for me.
Sent from my Pixel XL using Tapatalk

tried it already first thing, no difference.

Moto G7 Power - No VoLTE or VoWiFi - Any help or suggestion

Hello experts,
I wanted to see if anyone else has any experience in this?
I raised this issue on LineageOS GitLab, but while they come back to me, is anyone else experiencing this?
Expected Behavior
T-Mobile Network
VoLTE: If I make or receive a call, while VoLTE is turned on, the Cellular connection should remain on LTE.
VoWiFi: In low or no Cellular signal conditions, while VoWiFi is turned on, the calls should travel over WiFi.
Note: All the settings are enabled in the phone. In settings, and confirmed under ##4636## (see screenshots).
Current Behavior
T-Mobile Network
VoLTE: Turned off WiFi for debugging. Made an outbound call. During the call, the connection changes form LTE to 3G. Call is not doing VoLTE. Also true for inbound call.
VoWiFi: Moved to a location with no Cellular Signal, but was unable to complete any calls over WiFi.
Note: See the screenshots, I have all the correct settings enabled, but still IMS doesn't register.
Possible Solution
All toggles work, so the actual service should also work.
Steps to Reproduce
NOTE: First I tested this on complete STOCK ROM, fully updated, on T-Mobile network. Both VoLTE (on by default) and VoWiFi work. Next after installing LineageOS, I tried on the phone:
Went to Settings > Network & Internet > Mobile network. Turned on both the options, rebooted the phone.
After reboot, went into ##4636##, but that still shows IMS not registered.
Turned the WiFi off for debugging. On any outbound or inbound phone call, the cellular connection changes from LTE to 3G. Went to a place with no Cell Signal, and cannot get any calls over WiFi.
/device ocean
/version lineage-17.1
/date 2020/09/26
/kernel 4.9.206-perf+
/baseband M632_26.100.01.120.01R
/mods None
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----
----
Any help would be appreciated.
Thanks.

Any updates on this? I'm thinking of buying one of these, but no VoLTE is a deal breaker.

Same device, same carrier, exactly the same problem on LOS 17.1 and after upgrade to 18.1.
There are reports on GiLab, but no news/updates on that...

Other device (oneplus 5), but exactly the same problem on LOS 19.1 with fresh install (3 months ago).
Very few search results on duckduckgo and google, most results show solution with steps that you wrote in discription. Seems like on ly few devices with this problem.

Cellular Radio will not Power On (therefore can't activiate)

I am trying to help activate a new-to-them Verizon logo'ed Motorola Z2 Play phone. Everything else on the phone seems to work OK. WiFi works. Bluetooth works. GPS works. Apps run.
This phone is a Christmas present (and their kid is rather disappointed). I went to help them to activate it, and I am having major problems too. Tried every trick I know.
At the top it says "No Service", and the cellular signal strength (bars) is grayed out with an "X" over it. It is almost like the phone is in Airplane mode, but isn't. Just for fun, I tried turning Airplane mode on, and then back off, to see if that cleared it. It didn't (no change).
Here is a summary of what I tried so far...
When I try to activate it, I get an initially message (upon powering it up) that the activation is in progress. However, this eventually times out and fails.
If I go into Settings, System, About Phone, Status, and finally SIM Status, it shows a Signal Strength of zero (0).
Like I said, it seems like the Cellular radio is turned off.
A factory reset doesn't seem to help. It brings me into the setup routine, seems to "see" and successfully read the SIM (knows phone number, and there is no "SIM not found" msg, etc). The setup routine stops/hangs trying to activate.
BTW, I have tried their new SIM in a different phone temporarily (an old LTE phone of mine), and it works. So, it is not the SIM.
Here is the "secrete" Phone Info menu. Cut off the top (intentionally by me) it shows the correct IMEI and Phone Number.
Consistent to what I wrote above, the major problem to be that the Mobile Radio Power doesn't "stick". I can successfully set it on, but if I then close the menu, reopen the menu, it displays back to off.
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Do you have any ideas?