I have s21 ultra unlocked from Samsung. I have transfered my existing 5G SIM into this new device and it got activated and everything is working OK. but when I go into settings...> connections ...>Mobile networks .....> connection mode , I have automatic or manual selection options. In either of these modes I am only seeing available service provider networks but not seeing an opting to select only LTE and not 5G. Samsung says it is verizon issue and verizon tells me its samsung problem. Any help out there is highly appreciated. Thanks
Related
I've been banging my head against the wall with this issue for a while now. I have contacted both Samsung and Verizon but so far no luck in resolving the issue. I'm wondering if anyone else is experiencing this.
My S21 Ultra on Verizon is constantly switching between LTE and LTE+. This wouldn't be an issue were it not for the fact that apparently a great deal of the time it actually has no connection at all. This manifests itself with:
1) Text messages that fail to send, or indicate they failed to send when they actually were sent.
2) Incoming calls going directly to voicemail.
3) Outgoing calls that can't be placed unless I toggle Airplane Mode on and then off. (Though as it turns out, sometimes the failed attempts do ring on the recipients phone.)
At some of these times I may see a message along the lines of "Sim Card Not Present." And yes--the SIM card has already been replaced.
3) isn't much of an issue, as I have complete control over that. But 1) and 2) are both really annoying.
I made a screen capture video for a Verizon tech who is trying to help. In 40 seconds my phone switched between LTE and LTE+ six times.
A work-around that seems to be helping is using the "Samsung Band Selection" app to pick a network. I've done that all day today and have not had issues, though I also have not traveled anywhere. I fear this is not a great solution, though, as I don't think I'll be able to use it when moving around.
Is anyone else having experiences like these with the S21 Ultra? If so, are you also on Verizon?
Thanks!
Andyw2100 said:
I've been banging my head against the wall with this issue for a while now. I have contacted both Samsung and Verizon but so far no luck in resolving the issue. I'm wondering if anyone else is experiencing this.
My S21 Ultra on Verizon is constantly switching between LTE and LTE+. This wouldn't be an issue were it not for the fact that apparently a great deal of the time it actually has no connection at all. This manifests itself with:
1) Text messages that fail to send, or indicate they failed to send when they actually were sent.
2) Incoming calls going directly to voicemail.
3) Outgoing calls that can't be placed unless I toggle Airplane Mode on and then off. (Though as it turns out, sometimes the failed attempts do ring on the recipients phone.)
At some of these times I may see a message along the lines of "Sim Card Not Present." And yes--the SIM card has already been replaced.
3) isn't much of an issue, as I have complete control over that. But 1) and 2) are both really annoying.
I made a screen capture video for a Verizon tech who is trying to help. In 40 seconds my phone switched between LTE and LTE+ six times.
A work-around that seems to be helping is using the "Samsung Band Selection" app to pick a network. I've done that all day today and have not had issues, though I also have not traveled anywhere. I fear this is not a great solution, though, as I don't think I'll be able to use it when moving around.
Is anyone else having experiences like these with the S21 Ultra? If so, are you also on Verizon?
Thanks!
Click to expand...
Click to collapse
I was having the same issues. I was also seeing the device lose all network connection in an area with strong 4G. Verizon sent me a new s21u. That did not help. What I have been reading is that it has to do with 5G settings. Having a 5G sim card installed, the device is always looking for 5G. When it can't be located it defaults to 4G. During this process it seems to loose connection. Verizon in its wisdom removed our ability to access ALL the network settings, in particular the ability to select your preferred network type. It is automatically set to 5G. I installed the paid (donation) version of "Samsung Band Selection" from the play store. This allows access to the advanced network setting and allows you to select LTE under the Preferred Network Type. This seems to have fixed 99% of my connection issues.
jadams161 said:
I was having the same issues. I was also seeing the device lose all network connection in an area with strong 4G. Verizon sent me a new s21u. That did not help. What I have been reading is that it has to do with 5G settings. Having a 5G sim card installed, the device is always looking for 5G. When it can't be located it defaults to 4G. During this process it seems to loose connection. Verizon in its wisdom removed our ability to access ALL the network settings, in particular the ability to select your preferred network type. It is automatically set to 5G. I installed the paid (donation) version of "Samsung Band Selection" from the play store. This allows access to the advanced network setting and allows you to select LTE under the Preferred Network Type. This seems to have fixed 99% of my connection issues.
Click to expand...
Click to collapse
ooh... Awesome! Downloaded and changed the setting. Thanks!
S21 Ultra SM-G9980 256GB 5G Dual Sim
Active CSC: TGY ; Original CSC: BRI
Network: Vodafone NZ
Issue: Mobile Data and VoLTE won't automatically connect
Started happening probably after last firmware update (unsure). I noticed that after leaving WiFi network, normally Mobile Data kicks in and phone would automatically connect but hasn't been happening for the past couple of weeks. Also, whenever the phone is connected to 4G, VoLTE won't turn on.
To fix both issue, network has to be restarted by turning Airplane mode on/off OR restarting the device.
This is such a pain to do everytime and I hope someone can direct me to the right way.
Troubleshooting done:
Network settings reset
Factory reset
Replaced sim card with a brand new one
Called provider and they did network reset
Provider reprovisioned VoLTE on account
Inserted another sim from different provider. VoLTE and Mobile Data turns on automatically - no issues.
I have also cross-checked the network bands with mobile phone and Network Provider. No issues.
Called Samsung and basically been told that they can't help me.
Photos attached showing 4G connection with VoLTE toggle on but not active.
Any help would be appreciated.
mpore14 said:
S21 Ultra SM-G9980 256GB 5G Dual Sim
Active CSC: TGY ; Original CSC: BRI
Network: Vodafone NZ
Issue: Mobile Data and VoLTE won't automatically connect
Started happening probably after last firmware update (unsure). I noticed that after leaving WiFi network, normally Mobile Data kicks in and phone would automatically connect but hasn't been happening for the past couple of weeks. Also, whenever the phone is connected to 4G, VoLTE won't turn on.
To fix both issue, network has to be restarted by turning Airplane mode on/off OR restarting the device.
This is such a pain to do everytime and I hope someone can direct me to the right way.
Troubleshooting done:
Network settings reset
Factory reset
Replaced sim card with a brand new one
Called provider and they did network reset
Provider reprovisioned VoLTE on account
Inserted another sim from different provider. VoLTE and Mobile Data turns on automatically - no issues.
I have also cross-checked the network bands with mobile phone and Network Provider. No issues.
Called Samsung and basically been told that they can't help me.
Photos attached showing 4G connection with VoLTE toggle on but not active.
Any help would be appreciated.
Click to expand...
Click to collapse
Call to service provider and see if they can help. I have same model and VoLTE is working fine.
hi
i got the phone from korea, the problem is when connecting to 4G the phone would lose internet and calls then lose the network, i get a message saying "failed to register to network (15)" but if i forced the phone to connect to 3G then it works fine. here's what i tried to fix the problem :
turning off the mobile network then turning it on
resetting the network settings
removing NR Whitelist
and none of them fixed the issue. there's a korean menu in the service mode, but i didn't miss with it. i have attached screen shots of the software information and the korean menu in the service menu.
Who provides your service? Have you tried going into network settings and APN and see what that says
If it is a Korean phone and you aren't in Korea and it is locked into the network then you won't be able to get service somewhere else I don't think
allday5850 said:
Who provides your service? Have you tried going into network settings and APN and see what that says
Click to expand...
Click to collapse
im using my local non korean sim card and it's working fine, and im also using my local sim's APN settings, the sim card is not korean and nor are the APN settings.
i want to exhaust all my available options before i go for the format.
Hello
I just got this phone and set it up. Its a Global version 13.0.4 SKDMIXM.
I am on TMoblie USA - the phone is working great on LTE and 5G .
I am not able to see the Network preference under wifi calling where is can select Prefered Wifi Calling.
It appears that its running on default Prefered Cellular - because I can only see the VoLTE symbol on top.
Can someone help me in fixing this configuration to select Prefered Wifi Calling ? TIA
rogerga said:
Hello
I just got this phone and set it up. Its a Global version 13.0.4 SKDMIXM.
I am on TMoblie USA - the phone is working great on LTE and 5G .
I am not able to see the Network preference under wifi calling where is can select Prefered Wifi Calling.
It appears that its running on default Prefered Cellular - because I can only see the VoLTE symbol on top.
Can someone help me in fixing this configuration to select Prefered Wifi Calling ? TIA
Click to expand...
Click to collapse
Hello, I'm using a 11T Pro Dual SIM India model with India SIM in Slot 1 and TMO SIM in Slot 2.
I have not found the specific setting to make Wifi Calling "Preferred" but, my phone does indicate Vo WiFi even when I have Wifi connected and Mobile Data turned on too once Wifi Calling is enabled as below.
Apparently the Voice Over WiFi Settings (at least here on my phone) only show up for SIM 1, does not show for SIM 2.
Attached are sample screenshots where the Settings are under SIM 1.
Steps to get there-
Settings > SIM cards & mobile networks > Click on SIM 1
All the way down, last Setting is "Wi-Fi Calls" to enable "Make calls using Wi-Fi".
Hope this helps.
graphreak said:
Hello, I'm using a 11T Pro Dual SIM India model with India SIM in Slot 1 and TMO SIM in Slot 2.
I have not found the specific setting to make Wifi Calling "Preferred" but, my phone does indicate Vo WiFi even when I have Wifi connected and Mobile Data turned on too once Wifi Calling is enabled as below.
Apparently the Voice Over WiFi Settings (at least here on my phone) only show up for SIM 1, does not show for SIM 2.
Attached are sample screenshots where the Settings are under SIM 1.
Steps to get there-
Settings > SIM cards & mobile networks > Click on SIM 1
All the way down, last Setting is "Wi-Fi Calls" to enable "Make calls using Wi-Fi".
Hope this helps.
Click to expand...
Click to collapse
Thanks - I saw a post that had this diagram - In my case it has defaulted to
prefered cellular - so i dont get VoWifi
rogerga said:
Hello
I just got this phone and set it up. Its a Global version 13.0.4 SKDMIXM.
I am on TMoblie USA - the phone is working great on LTE and 5G .
I am not able to see the Network preference under wifi calling where is can select Prefered Wifi Calling.
It appears that its running on default Prefered Cellular - because I can only see the VoLTE symbol on top.
Can someone help me in fixing this configuration to select Prefered Wifi Calling ? TIA
Click to expand...
Click to collapse
Operators can disable this menu if they want to lock you onto Wifi preferred or cellular preferred. Does this only happen with this phone or does it also happen with the SIM in another Android phone?
rogerga said:
Thanks - I saw a post that had this diagram - In my case it has defaulted to
prefered cellular - so i dont get VoWifi
View attachment 5657751
Click to expand...
Click to collapse
There's a possibility of TMO-US not supporting WiFi calling on the Xiaomi 11T (Global), perhaps.
Although, I have been using various Unlocked phones (Nokia & Samsung) on TMO-US for the past few years & have practically never had issues with WiFi calling on any. Shall have to test it once I'm back. Won't be for some time.
Is your phone on the latest firmware? Try updating it to check if there's a new update available
which hopefully can solve your issue.
Couple of options to test, in case you have not already tested them-
a) leave WiFi Calling Enabled then disable the VoLTE feature and check if WiFi calling works?
b) disable Mobile Data, WiFi Calling enabled with WiFi connected and check if WiFi Calling works.
c) some users have had to ensure their E911 address is correctly in place on the TMO account too.
mici01 said:
Operators can disable this menu if they want to lock you onto Wifi preferred or cellular preferred. Does this only happen with this phone or does it also happen with the SIM in another Android phone?
Click to expand...
Click to collapse
I move from a One Plus 6 - it had the options
graphreak said:
There's a possibility of TMO-US not supporting WiFi calling on the Xiaomi 11T (Global), perhaps.
Although, I have been using various Unlocked phones (Nokia & Samsung) on TMO-US for the past few years & have practically never had issues with WiFi calling on any. Shall have to test it once I'm back. Won't be for some time.
Is your phone on the latest firmware? Try updating it to check if there's a new update available
which hopefully can solve your issue.
Couple of options to test, in case you have not already tested them-
a) leave WiFi Calling Enabled then disable the VoLTE feature and check if WiFi calling works?
b) disable Mobile Data, WiFi Calling enabled with WiFi connected and check if WiFi Calling works.
c) some users have had to ensure their E911 address is correctly in place on the TMO account too.
Click to expand...
Click to collapse
I had a working One Plus 6 - so I know TMO has VoWifi - I use it a lot due to poor reception at home .
The current workaround to force VoWIFI is
Turn On Airplane MOde
Turn ON WiFi only
then it works in VOWIFI with out any issues
I know I am missing a menu Item that can toggle this setting . I would prefer having that setting but its not a breaker for now . The phone works with all the Network features of TMO , LTE , 4G , 5G etc . No visual voicemail thats all.
Thanks
rogerga said:
I had a working One Plus 6 - so I know TMO has VoWifi - I use it a lot due to poor reception at home .
The current workaround to force VoWIFI is
Turn On Airplane MOde
Turn ON WiFi only
then it works in VOWIFI with out any issues
I know I am missing a menu Item that can toggle this setting . I would prefer having that setting but its not a breaker for now . The phone works with all the Network features of TMO , LTE , 4G , 5G etc . No visual voicemail thats all.
Thanks
Click to expand...
Click to collapse
Perhaps you might want to give this a try-
Phone Dialer- *#*#86943#*#* VoWiFi carrier check disable
From here- https://forum.xda-developers.com/t/wifi-calling-volte-on-mi-9.3917887/
(or here too https://www.hardreset.info/devices/xiaomi/xiaomi-mi-11/codes/)
graphreak said:
Perhaps you might want to give this a try-
Phone Dialer- *#*#86943#*#* VoWiFi carrier check disable
From here- https://forum.xda-developers.com/t/wifi-calling-volte-on-mi-9.3917887/
(or here too https://www.hardreset.info/devices/xiaomi/xiaomi-mi-11/codes/)
Click to expand...
Click to collapse
Thanks - this code is what got me to where I am now . I think from other articles - the mbn config may require some tweaking - but it refuses to give me access to it when i use *#*#663368378#*#*
Same access issue here too.
Wish you luck.
Pinging to see if there is a soln. in future.
Is anyone having an issue where the data network drops from 5G to 3G upon receiving a phone call?
On S21 Ultra, Telstra network.
Have tried Network Settings Reset without assistance, and the telco claims everything is enabled on their end.
I'm also unable to find the VoLTE toggle under Network Connections and cannot enable call waiting - I wonder if this is related.
EDIT: Turns out it was indeed a carrier issue. Resolved with call to Telstra.
It is definitely related. If no VoLTE is set, network will always switch back fron 4G or 5G to 3G to support the incoming call.
Setting to use VoLTE (or 'call via 4G') should be under Mobile Network settings.
You may want to check with Telstra support, as VoLTE may not yet be activated for your device/subscription or apn settings are not correctly set.
@OnnoJ Thanks for the reply. The call via 4G toggle is missing from my "Mobile networks" setting page. I've seen others have a similar issue, but have not found a solution as yet.
Can't believe it - called Telstra again and they now found VoLTE was NOT provisioned! They fixed it on their end and all is working.