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[Not-Fixed] How to install new Z3 D6603 LTE on AT&T network

[Not Fixed] see bottom of this post.
It is fairly easy to install a new D6603 to work completly on the AT&T network. It is not so easy to find the answer of how to do it in the threads and posts. I tried many suggestions and wasted a lot of time. Hopefully this will save you from that fate.
First you must know that you can't use the IMEI number of your new phone if you want it to work completly as it should. If you use the Z3 IMEI you will have trouble with data of various sorts and the phone will go off line when on LTE after 20 or 30 minutes and you will not receive calls or SMS messages. I do not know why but it has been suggested that the AT&T network does not recognise this phone so it causes trouble.
If you have an AT&T nano-sim from your old phone then just put it in the phone. (Cut downs work but can cause other problems some say.) When the SIM is inserted for the first time into a new phone there is a prompt that asks if you want to download the APN. Hit 'yes' and the phone downloads the APN itself.
If it does not ask then go to Settings>More>Mobile Networks>Prefered Network Type and be sure LTE (Preferred) is selected. Then connect your phone to the internet and then go to Settings>More>Internet Settings and select AT&T. You should be good to go.
If you need to get a nano-sim then go to the AT&T store or call and they will give you one or send you one for free. You will need to use the IMEI number from a LTE phone that is already on the AT&T system. You can use your old phone or borrow the number from someone. If the rep installs the sim in the Z3 with the 6603 IMEI don't worry. Just call support later and tell them you sent your new phone back and want to go back to your old IMEI or have a new IMEI (from an existing AT&T phone). They will enter it and off you go. The phone from the IMEI will show in the picture on your account page. Big deal!
Update: This worked for hours last night but this morning it is back to not receiving calls. Simply turning wifi off and it began to receive calls as GPRS was switched back on. My wifi was on which has been said to cause problems. I will test with wifi off and report back. Had "no service" instead of AT&T on upper left of lock screen. A full shut down for several minutes than re-boot solved that.

YMMV. I've been on ATT with a Z3 purchased from Sony store for several months and it was registered in an ATT store by scanning the IMEI off the box followed by updating Internet settings in Setup. ATT online shows unknown model but everything works including LTE and MMS. There is something else involved when problems like this occur probably some setting not getting reset. I registered the Z3 on a new line with a new Sim card because I wanted to take my time moving stuff off my old phone--this may have avoided the problems.

JudH said:
YMMV. I've been on ATT with a Z3 purchased from Sony store for several months and it was registered in an ATT store by scanning the IMEI off the box followed by updating Internet settings in Setup. ATT online shows unknown model but everything works including LTE and MMS. There is something else involved when problems like this occur probably some setting not getting reset. I registered the Z3 on a new line with a new Sim card because I wanted to take my time moving stuff off my old phone--this may have avoided the problems.
Click to expand...
Click to collapse
I've also had no problems with my Z3 on AT&T. Works great, receives sms/mms immediately, etc..

esheesle said:
I've also had no problems with my Z3 on AT&T. Works great, receives sms/mms immediately, etc..
Click to expand...
Click to collapse
AT&T's system sometimes takes a while to get updated with new IMEIs that trigger LTE provisioning for a users' account.
Once your account is provisioned for LTE you never have to worry about it again, but sometimes if you have a phone the system doesn't recognize, it is a pain to get AT&T to properly provision your account. Supposedly properly trained in-store reps can do it - the key being "properly trained" - Never try to do anything "unusual" by calling AT&T customer service, and NEVER use a franchise/kiosk in-person for service - make sure you're at a corporate-owned store! Even then, some stores might have incompetent staff. I've been lucky that all of my local corporate stores are pretty well staffed.

So you are saying that your Z3's with wifi and LTE on with AT&T are working as they should?
With LTE off my phone responds normally with wifi on. With LTE and wifi on it will not respond to calls after a 30 minute sleep. It does not show missed calls. Calls go straight to voice mail after 2 rings. Could you tell me what level your LTE dBm's are? Thanks!

I was told not to give them my imie# but, after recvng the minisim I had to call them in order to 'provision' it to work at all and they needed that #. I have never had any problems personally and am assuming this may be because you gave them the wrong #. Again I am only guessing. Oth, if I had had a different imie to give, I would have done so myself.

It is very strange and I am feeling it is more signal strength related than how you provision your phone. (Once it is provisioned correctly.) It seems that more people have less problems when they already have a nano-sim and just plunk it in the new phone. This might indicate that they already had a strong signal from the get go. My old HTC One + get's a better signal than the Sony in the same locations with the same (new) SIM. With the Devilcase bumper on it gets 5% less. My very limited tests yesterday seemed to indicate that it was signal strength related. I am not enough of a conspiracy theorist to imagine that AT&T would program their system to not function correctly with sims that are provisioned with these Sony phones which they are obviously ignoring for some reason. Or am I?

I had all kinds of problems with the Z3 on AT&T. The IMEI caused an issue since AT&T linked it to a flip phone and therefore couldn't provision LTE. I changed it to an old AT&T LTE device and then I was able to get LTE but was having the same issue with calls going directly to voicemail and texts showing up hours later in bunches. I found the solution was to switch off LTE in the quick settings menu. All calls and texts came through and on time while LTE was off. If I needed a data boost to stream, I turned it back on until I was finished streaming. This was while on KitKat. After upgrading to Lollipop, I was able to keep LTE turned on and calls and texts still arrived on time.

I use data rarely. Mostly wifi. If I don't leave LTE on, my phone reverts to wcdma preferred. And why can't LTE just work without me having to constantly turn it back on? What bugs me is having the APN settings greyed out. I want to be able to turn it off. If anything it seems the phone itself is preventing me from accessing the sim. It feels like I'm borrowing something which contains lots of MY private data. I know my phonebook is stored locally but I also noticed there is no option of specifying the sim or not. Anybody know how to switch APN on and off? In fact, overall even rooted, I still feel like I have almost no power over it. I can't even disable the cellular connection without going full on airplane mode and I do not trust that. I don't even fly so that needs work for sure. Dumb question but could I buy a working nanosim from say 7-eleven that my apn switch will work with?

"Anybody know how to switch APN on and off?"
On my Z3 on OTA stock Lollypop I have an icon in quick settings to turn LTE on and off. Drag two fingers down from the top of the screen. If no LTE icon then select the pencil icon at the top and select the LTE icon. There is also a mobile data icon switch there.
To turn off your radio completly you can get the Advanced Signal Status app and select additional info at the bottom and click phone information and turn off radio. Probably a number of ways to do it but that is one.
Sim contact storage was a way to move information from phone to phone. You can still do it but not really necessary with cloud backup and storage. Google does it for me without me having to do anything which I like. I still save contacts to the sim just because I can. Export and import in your contacts app menu.

johnboatcat said:
So you are saying that your Z3's with wifi and LTE on with AT&T are working as they should?
With LTE off my phone responds normally with wifi on. With LTE and wifi on it will not respond to calls after a 30 minute sleep. It does not show missed calls. Calls go straight to voice mail after 2 rings. Could you tell me what level your LTE dBm's are? Thanks!
Click to expand...
Click to collapse
Works fine here. I don't pay attention to the dBm estimates since these aren't measured with calibrated test equipment and vary widely. Those numbers are basically worthless.
The only valid comparison is data performance in a given environment (ideally a difficult weak-signal one) - and at my desk with very weak signal, every phone I've ever used performs similarly to the Z3.

"Those numbers are basically worthless."
True, but we have narrowed this down to the possibility that it might be signal related so it is worth a shot. If people whose phones are working fine would measure the LTE dBm on Advanced Signal Status at the location where their phone sits and works well the most we might possibly see some measure of difference in the phones that are not working. Most of the non-working phones seem to work sometimes so signal strength is the next best parameter to rule out. Thanks!
Here are the screen shots of my phone with LTE on, LTE and wi-fi and LTE off and wi-fi.
How do the working phones compare? Does your CDMA (voice) also go to 0% when LTE is on and GSM = n/a?

Thanks. I think adv sig nfo actually works. I'm amazed actually. I can't find the phone's native greyed out apn switch anyways which really makes no sense.

[Q] Samsung Galaxy Xcover Pro, help get Verizon Advanced Calling features working

Hello, and thank you in advance for your assistance. I am not certain the correct place to ask this question as I did not see a Xcover Pro subforum. If there is a better place to ask this please let me know.
I have a brand new Samsung Galaxy XCover Pro, I purchased it from Amazon as Verizon does not yet sell this phone to consumers, only to enterprise accounts. I am trying to get Advanced Calling features to work on it, aka: HD Voice, Video Calling, VoLTE, etc. I have LTE+ data and WiFi calling working, but I have no Advanced Calling menu in Dialer or Communication settings. Verizon support tells me it's "not possible" since the phone didn't come from them... If I go into the *#*#4636#*#* menu, under Phone information, "VoLTE Provisioned" is grayed out. See below screenshot. I'm wondering if the phone is missing a firmware update or APK to unlock advanced calling, maybe one that could be installed from another Verizon Samsung phone?
I have tried replacing the SIM card, which required activating it in my old phone, my LG V10, before it would work on the new phone. Advanced Calling features DO work on the LG V10 with both the old SIM and the new one...
Any thoughts or assistance with this would be great, as Advanced Calling seems to be the only thing I can't get to work on this. It is otherwise an awesome phone!
If you're not familar with the phone, I think it's the best buy in 2020. It's a new phone that comes with Android 10 out of the box, with removable battery (!), MicroSD, dual sim, headphone jack, notification LED, a IP68 water / dust resistant rating, milspec designed (5 food drop rated), "built in case", recessed screen, and so on. It's a highly durable, repairable, up to date phone using a respectable mid tier chipset that has modern power savings and so on. It's $500 from Amazon etc, and works on multiple carriers including Verizon and AT&T.
info about the phone: https://www.samsung.com/us/business/products/mobile/phones/galaxy-xcover-pro/

Samsung Galaxy Xcover Pro, Help Get Verizon Advanced Calling Features Working
Take a look at the Questions and Answers on Amazon for that. If I recall correctly, someone posted that they had the same issue and resolved it.
https://www.amazon.com/ask/question..._hza?isAnswered=true#question-Tx3BN4W51N8YVTM

Protonus said:
Hello, and thank you in advance for your assistance. I am not certain the correct place to ask this question as I did not see a Xcover Pro subforum. If there is a better place to ask this please let me know.
I have a brand new Samsung Galaxy XCover Pro, I purchased it from Amazon as Verizon does not yet sell this phone to consumers, only to enterprise accounts. I am trying to get Advanced Calling features to work on it, aka: HD Voice, Video Calling, VoLTE, etc. I have LTE+ data and WiFi calling working, but I have no Advanced Calling menu in Dialer or Communication settings. Verizon support tells me it's "not possible" since the phone didn't come from them... If I go into the *#*#4636#*#* menu, under Phone information, "VoLTE Provisioned" is grayed out. See below screenshot. I'm wondering if the phone is missing a firmware update or APK to unlock advanced calling, maybe one that could be installed from another Verizon Samsung phone?
I have tried replacing the SIM card, which required activating it in my old phone, my LG V10, before it would work on the new phone. Advanced Calling features DO work on the LG V10 with both the old SIM and the new one...
Any thoughts or assistance with this would be great, as Advanced Calling seems to be the only thing I can't get to work on this. It is otherwise an awesome phone!
If you're not familar with the phone, I think it's the best buy in 2020. It's a new phone that comes with Android 10 out of the box, with removable battery (!), MicroSD, dual sim, headphone jack, notification LED, a IP68 water / dust resistant rating, milspec designed (5 food drop rated), "built in case", recessed screen, and so on. It's a highly durable, repairable, up to date phone using a respectable mid tier chipset that has modern power savings and so on. It's $500 from Amazon etc, and works on multiple carriers including Verizon and AT&T.
info about the phone: https://www.samsung.com/us/business/products/mobile/phones/galaxy-xcover-pro/
Click to expand...
Click to collapse
The features you are trying to enable, such as VoLTE, are controlled by the carrier and the device must also have the hardware and software to support those features, as far as I know, there isn't anything you can do from your end.
Sent from my SM-S767VL using Tapatalk

Samsung Galaxy Xcover Pro, help get Verizon Advanced Calling Features Working
Amazon Customer
4.0 out of 5 stars Using with Verizon
Reviewed in the United States on June 9, 2020
Verified Purchase
Very nice phone with a few caveats. First I am a consumer user not a business enterprise.
The phone is fast, very nice screen, quality build with Android 10, no carrier bloatware. The big thing for me is the replaceable battery. Every new smartphone I have had to buy is because the built battery would not hold a charge and was a pain to replace. (I know I have done it myself).
Now for some issues with setup. There is no user manual available. I went to the Samsung site and not there. Therefore you have to stumble through by yourself.
Inserting the SIM and SD Card. The phone has SIM 1 and SIM 2. for Verizon use SIM 1. The SIM card is installed under the SD Card. The slots are under the battery. Turning the phone on is intuitive, push the button on the side. Turning the phone off is not intuitive, the button does not work. The off button is on the upper right corner next to the settings button, both visible after swiping down. Transferring data and apps from your old phone is a snap, follow the prompts.
Since this a Global phone when you turn it on it automatically selects the best carrier, GMS or CDMA. What this means when you turn it on the first time it will connect but maybe not to Verizon. Here is what you have to do.
Go to:
Settings
Connections
Mobile Network
Network Mode
Manual
Network Operators
Choose Verizon
Now you are all set and on the Verizon network. If you try to activate on line with the EMIE it tells you it is invalid however the phone is on the network and works fine. I called Verizon and the only reason this happens is that the global phone is not yet in their EMIE database yet it will work fine (Verizon sells the same phone with a slightly different sub-model number). The only thing you will notice is that on line under "My Devices" you will see your phone number but no picture or model of your phone.
Some have questioned say that the phone does not support WIFI calling, it does in fact support WIFI calling, to activate you have to enter emergency contact information. I know this correct because I have it set up for WI-FI calling. Just ordered an OTTERBOX from their website, 20% less than on Amazon with free shipping.
Hope this helpful, great phone
Read less

Jim1348 said:
Amazon Customer
4.0 out of 5 stars Using with Verizon
Reviewed in the United States on June 9, 2020
Verified Purchase
Very nice phone with a few caveats. First I am a consumer user not a business enterprise.
The phone is fast, very nice screen, quality build with Android 10, no carrier bloatware. The big thing for me is the replaceable battery. Every new smartphone I have had to buy is because the built battery would not hold a charge and was a pain to replace. (I know I have done it myself).
Now for some issues with setup. There is no user manual available. I went to the Samsung site and not there. Therefore you have to stumble through by yourself.
Inserting the SIM and SD Card. The phone has SIM 1 and SIM 2. for Verizon use SIM 1. The SIM card is installed under the SD Card. The slots are under the battery. Turning the phone on is intuitive, push the button on the side. Turning the phone off is not intuitive, the button does not work. The off button is on the upper right corner next to the settings button, both visible after swiping down. Transferring data and apps from your old phone is a snap, follow the prompts.
Since this a Global phone when you turn it on it automatically selects the best carrier, GMS or CDMA. What this means when you turn it on the first time it will connect but maybe not to Verizon. Here is what you have to do.
Go to:
Settings
Connections
Mobile Network
Network Mode
Manual
Network Operators
Choose Verizon
Now you are all set and on the Verizon network. If you try to activate on line with the EMIE it tells you it is invalid however the phone is on the network and works fine. I called Verizon and the only reason this happens is that the global phone is not yet in their EMIE database yet it will work fine (Verizon sells the same phone with a slightly different sub-model number). The only thing you will notice is that on line under "My Devices" you will see your phone number but no picture or model of your phone.
Some have questioned say that the phone does not support WIFI calling, it does in fact support WIFI calling, to activate you have to enter emergency contact information. I know this correct because I have it set up for WI-FI calling. Just ordered an OTTERBOX from their website, 20% less than on Amazon with free shipping.
Hope this helpful, great phone
Read less
Click to expand...
Click to collapse
This only mentions getting WiFi calling working, (which they already have working), but, it doesn't mention anything about the other things they want to enable, such as VoLTE or HD voice.
No one here can help them either VoLTE anyway because it is controlled by the carrier and they won't be able to use VoLTE unless Verizon supports VoLTE for that model number.
Sent from my SM-S767VL using Tapatalk

I had the same problem. Verizon tech support was stumped the device was in their database and still no VoLTE.
The solution that worked for me:
1. Get a new SIM
2. Factory reset with new SIM inserted.

rdwilson713 said:
I had the same problem. Verizon tech support was stumped the device was in their database and still no VoLTE.
The solution that worked for me:
1. Get a new SIM
2. Factory reset with new SIM inserted.
Click to expand...
Click to collapse
could you give a few more details. I have the same phone with the same problem. Are you saying your new sim card install got you the advanced calling features menu to display and working?

GMANNOT said:
could you give a few more details. I have the same phone with the same problem. Are you saying your new sim card install got you the advanced calling features menu to display and working?
Click to expand...
Click to collapse
and btw i have volte working obviously since i can stream video and talk on the phone.

Since I don't have root and Samsung, in their infinite wisdom, elected to disable the testing menu using the phone keys, I used an app to get to the necessary screen. The app is "Force LTE".
I had Internet and could ping by domain as well as IP but no inbound or outbound calling. Again, with zero root rights, the options were greyed out. Once I did a factory reset and popped in a new SIM, while on the phone with Verizon support, they were able to properly provision the phone.
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to be more specific, my phone is working with voice, data and wifi calling. I can bring up the testing menu that looks like yours; volt and wifi calling on but greyed out with video calling off and greyed out. I want to get the advanced calling menu available and turned on. I dont have the menu and im guessing its because its the XAA version csc and not the VZW.
SO is it possible to use Odin and load the VZW csc file to get the verizon hd voice and video menu or would i have to do the whole firmware update with the VZW csc file ?

Verizon z4 on tmobile

Finally upgraded from my moto Z2 force. Wanted to keep all my motto mods so I purchased a Verizon unlocked moto Z4. Calling text data all work fine but I'm unable to get an option for voice over LTE and and when I make a phone call it drops to 3G. I visited a store and they replaced the SIM card. Unfortunately I'm still getting the same results, any hint tips clues on how to make this work ?

Stopdrpnro said:
Finally upgraded from my moto Z2 force. Wanted to keep all my motto mods so I purchased a Verizon unlocked moto Z4. Calling text data all work fine but I'm unable to get an option for voice over LTE and and when I make a phone call it drops to 3G. I visited a store and they replaced the SIM card. Unfortunately I'm still getting the same results, any hint tips clues on how to make this work ?
Click to expand...
Click to collapse
I have a Retail unlocked Z4 on verizon service, so a different situation than you. However, I have had some experience with my VoLTE disappearing from my Phone Settings>Network&Internet>Mobile Network menu.
To fix this:
1. I log into my verizon account from a pc,
2. go to Features/Add-Ons
3. Disable the Advanced Calling/VoLTE
4. Accept the terms&conditions about "changing your plan"
5. Confirm the change.
6. Reboot phone.
7. Go back into Features/Add-ons
8. Enable the Advanced Calling/VoLTE
9. Accept the terms&conditions about "changing your plan"
10. Confirm the change.
11. Reboot phone, and VoLTE should be showing back up on your phone settings (may have to give it an hour or two then try rebooting phone, just turn off and back on again).
The last time my VoLTE disappeared, I kept getting an error when trying to disable the Feature online in my account on my pc. I did the above steps disabling and then enabling a different free feature, and the end result was the same: VoLTE was back on my phone settings.
Maybe try doing something similar while viewing your TMobile acct on a computer.
Alternatively, if you have a family member or buddy that can let you pop in their VZW SIM card in your Z4, then go into their acct settings on a pc, do what I mention above, and then once you have VoLTE back on your phone settigs: Turn off phone and give them back their SIM Card, nothing would have really changed on their acct, and your phone should still have VoLTE in settings (until...I find the VoLTE disappears for me only after some of the Android security OTA updates, which fortunately/unfortunately are not really happening to our Z4s anymore).
Hope this helps.

Question How to set dual sim where SIM 1 is the default for calls/sms and ESIM 2 for data?

Just got this phone and I cannot figure out how to do this. I can only set one as the primary sim.
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Probably a good idea to delete that picture and post without your phone number

butchieboy said:
Probably a good idea to delete that picture and post without your phone number
Click to expand...
Click to collapse
Yeah just realized that, fixed

I think one of your operators blocked that function. I'd try changing sim slots. Verizon to sim2 slot and t-mobile to sim 1 slot.
This is the menu I have:

I have an unlocked s22 ultra and neither sprint (with tmo sim) or Verizon are giving option for esim at all so I'm stuck with just physical sim slot

rroyy said:
I think one of your operators blocked that function. I'd try changing sim slots. Verizon to sim2 slot and t-mobile to sim 1 slot.
This is the menu I have:
Click to expand...
Click to collapse
Yep... it's correct.... depend of the Simcard Operator....

haifish9999 said:
Yep... it's correct.... depend of the Simcard Operator....
Click to expand...
Click to collapse
Rip well I've tried setting t-mobile as first and then Verizon as first, both do the same thing. This wouldn't make sense. I know that if I run Verizon first, they block the *#0011# so I run the t-mobile sim first

rroyy said:
I think one of your operators blocked that function. I'd try changing sim slots. Verizon to sim2 slot and t-mobile to sim 1 slot.
This is the menu I have:
Click to expand...
Click to collapse
haifish9999 said:
Yep... it's correct.... depend of the Simcard Operator....
Click to expand...
Click to collapse
It's actually a regional thing. For some reason, the U/U1 firmwares use this crappy "Primary SIM" menu instead of the usual SIM options.

eurominican said:
I have an unlocked s22 ultra and neither sprint (with tmo sim) or Verizon are giving option for esim at all so I'm stuck with just physical sim slot
Click to expand...
Click to collapse
Did Verizon say why? I currently have an esim with Verizon on my P6P. The average support rep didn't know how. I had to DM Verizon Support on Twitter to get someone who knew how.

North American models do this for some bizarre reason and I hate it. I had a thread where I mentioned this and never found a fix.
(Mine is a Canadian model)

I just spoke with Samsung support. After first trying to tell me I had to call the carrier, he says it doesn't support two sims at the same time. You have to switch between them. Bringing back to Bestbuy. What an utter disappoontment.

drfundy said:
I just spoke with Samsung support. After first trying to tell me I had to call the carrier, he says it doesn't support two sims at the same time. You have to switch between them. Bringing back to Bestbuy. What an utter disappoontment.
Click to expand...
Click to collapse
As a workaround, if you install the Google dialer app, you can pick which one to dial with by default. Basically I set the sim card that I want to use for data only as the primary, use google dialer to use the other sim card for voice calls.
The only real pain point now is texting. It wants to use my primary for texting by default. Have to remember to switch it if I am texting a new number or an existing one where I have not received a text yet on the new phone.
Really still sucks. I've seen screenshots of it letting you use one for data, another for voice and text. It sucks that they would give us less flexibility. As it is, I am likely going to return this. Between that and the camera (P6P is better), it just isn't worth the price tag.

You can buy the dual SIM international version for HK. It's the same hardware (it's not exynos). And it has the individual control per voice / data / messaging. But you won't get true 5G (you might get fake 5G on TMOB where it says 5G but it's only part of the bands required). I had the s21 ultra version.

I have US version of the phone and have the same problem: it's only primary and non-primary. Primary is responsible for all: calls, messages and data. I chatted with Samsung's support. He said he's going to inform dev team.
Does anybody, somebody, have a new info about this situation?
Is there any workaround?
The biggest problem with messages: to download messages I have to switch to my physical sim of my carrier.

This is one of those dumbass Samsung insane decisions that will make me get rid of this phone.

Coming from Pixel 6, dual sim management is a pain with S22. How I kind of work around this scenario below....not optimal but will do for now.
Data SIM: T-Mobile esim (Primary)
Call/Text: ATT physical sim
Text messages: I used native Samsung Messages app (Google Messages app requires you to switch on MMS, annoying)
Call: I went into Contacts, edit a short list of my favorite numbers to default to ATT. This set all calls to ATT for those contacts.

vboyz104 said:
Coming from Pixel 6, dual sim management is a pain with S22. How I kind of work around this scenario below....not optimal but will do for now.
Data SIM: T-Mobile esim (Primary)
Call/Text: ATT physical sim
Text messages: I used native Samsung Messages app (Google Messages app requires you to switch on MMS, annoying)
Call: I went into Contacts, edit a short list of my favorite numbers to default to ATT. This set all calls to ATT for those contacts.
Click to expand...
Click to collapse
Question for you. Can you receive calls and texts destined for your ATT physical SIM while having your primary sim set to the eSIM? This is my biggest stress. I dont want to be out of touch just because I'm using an alternate data SIM

SpeedyOyster said:
Question for you. Can you receive calls and texts destined for your ATT physical SIM while having your primary sim set to the eSIM? This is my biggest stress. I dont want to be out of touch just because I'm using an alternate data SIM
Click to expand...
Click to collapse
YES !
you can receive calls and texts from both numbers !
when you make a call, it will give you a prompt to select sim1 or sim2 (esim).
and when you wanna sent a text, it has a sim1 icon on the texting area, if you want to send with the phone number on sim2 (esim), you just switch to sim2 icon.
i on android 13 beta with unlocked s22 ultra U1

Question Wifi-Calling?

Greetings everyone!
Just got my Pixel 6a, love it so far, but i have one problem: Wifi Call doesnt work.
Whenever i try do a wifi call, i just get the message "out of network call"
Im using a german sim card from o2 (telefonica) and the thing is: my prior phone
was a redmi note 10 5g and with this phone (same sim card) wifi calling just worked like a charm.
so my question is: is there any trick to make it work? any explanation why it doesnt work with the 6a?
its a real bummer to go from a cheap a... redmi where this function just works fine to a nice and not so cheap pixel
(love google phones by the way, its my 3rd one), just to realize that something doesnt work as excpected.
i also tried a different os (calyx os), still no wifi-call.
help?

realCyphox said:
Greetings everyone!
Just got my Pixel 6a, love it so far, but i have one problem: Wifi Call doesnt work.
Whenever i try do a wifi call, i just get the message "out of network call"
Im using a german sim card from o2 (telefonica) and the thing is: my prior phone
was a redmi note 10 5g and with this phone (same sim card) wifi calling just worked like a charm.
so my question is: is there any trick to make it work? any explanation why it doesnt work with the 6a?
its a real bummer to go from a cheap a... redmi where this function just works fine to a nice and not so cheap pixel
(love google phones by the way, its my 3rd one), just to realize that something doesnt work as excpected.
i also tried a different os (calyx os), still no wifi-call.
help?
Click to expand...
Click to collapse
I'm using the Pixel 6a in Germany with o2 too - I've no issues with VoWifi and VoLTE. Are you shure you've enabled WLAN call in the accordant settings?

I use Google Voice...there an easier way w/o picking up an additional phone #?
On AT&T in the US...which is prolly why...lol

accuphase said:
I'm using the Pixel 6a in Germany with o2 too - I've no issues with VoWifi and VoLTE. Are you shure you've enabled WLAN call in the accordant settings?
Click to expand...
Click to collapse
i wrote that i used wifi calling with the redmi just fine, so i guess i know how to set it up, yes. so far i tried two o2 cards, no luck. question is, can you (you) really do phone calls by wifi or are you just using cellular without actually knowing. can you still do phone calls when airplane mode is on but wifi is enabled? do you see the wifi-icon onscreen (below number/name you're calling) when making a call?

realCyphox said:
i wrote that i used wifi calling with the redmi just fine, so i guess i know how to set it up, yes. so far i tried two o2 cards, no luck. question is, can you (you) really do phone calls by wifi or are you just using cellular without actually knowing. can you still do phone calls when airplane mode is on but wifi is enabled? do you see the wifi-icon onscreen (below number/name you're calling) when making a call?
Click to expand...
Click to collapse
can you really do phone calls by wifi ? Yes
can you still do phone calls when airplane mode is on but wifi is enabled? Yes
do you see the wifi-icon onscreen (below number/name you're calling) when making a call? Yes

realCyphox said:
i wrote that i used wifi calling with the redmi just fine, so i guess i know how to set it up, yes. so far i tried two o2 cards, no luck. question is, can you (you) really do phone calls by wifi or are you just using cellular without actually knowing. can you still do phone calls when airplane mode is on but wifi is enabled? do you see the wifi-icon onscreen (below number/name you're calling) when making a call?
Click to expand...
Click to collapse
Hi,
I'm having similar issues with my Pixel 6a, also in Germany. I use it with two SIM cards (o2/Telefonica physical SIM card and Vodafone eSIM). I have enabled Wifi Calling in the SIM card settings for both SIM Cards, but _most_ of the time, it doesn't work. The phone tries to use placing calls over cellular (my home office is in my basement, so cellular reception is pretty bad to non-existent, especially with Vodafone)
Most of the times, because sometimes it does work, then it shows up in the status bar and the wifi symbol is shown when placing a call. I couldn't yet figure out any correlation to when or why it works or doesn't, I have tried restarting the phone, putting it to airplane mode, deactivating and re-activating Wifi-calling - or just using one SIM card.
I'd say ~90% of the time it doesn't work.
btw I have used a Pixel 4a with the exact same setup / SIM cards before and didn't experience any issue whatsoever.
Do you have any workaround in the meantime?

Not sure if this helps any, but when entering *#*#4636#*#* on dialpad, going into 'Phone Information'
Is WIFI Calling Provisioned enabled like in my attachment?
Worth looking into:
How to Enable the Preferred WiFi Calling Option on the Verizon Pixel & Pixel XL
A tutorial on how to enable the Wifi Preferred mode in the WiFi Calling settings on the Verizon Google Pixel and Google Pixel XL.
www.xda-developers.com

andybones said:
Not sure if this helps any, but when entering *#*#4636#*#* on dialpad, going into 'Phone Information'
Is WIFI Calling Provisioned enabled like in my attachment?
Worth looking into:
How to Enable the Preferred WiFi Calling Option on the Verizon Pixel & Pixel XL
A tutorial on how to enable the Wifi Preferred mode in the WiFi Calling settings on the Verizon Google Pixel and Google Pixel XL.
www.xda-developers.com
Click to expand...
Click to collapse
Thanks for your answer. It is enabled for both sim cards indeed, though (WLAN-Anrufe eingerichtet is the option in German).

koenichlich said:
Thanks for your answer. It is enabled for both sim cards indeed, though (WLAN-Anrufe eingerichtet is the option in German).
Click to expand...
Click to collapse
Very welcome.
I'm sorry, I wish I was able to help with this!

I have found the error - it's actually caused by Blokada. I'm not sure whether it's just after some update of Blokada (I have used Blokada v5 for quite some time and regularly update) or the combination of Pixel 6a with Blokada, though. But Wifi calling always does work, when I disable Blokada.
Than I found this thread and have subsequently added com.android.phone and com.android.providers.telephony as bypass nad it does seem to work until now. Somebody else suggested bypass of Carrier provisioning service, I haven't tested yet, since as said it does seem to work now.
Just wanted to share my findings, if somebody else stumbles upon this thread.