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Call Waiting?

Not sure if this is a carrier thing or the device? I switched from AT&T to Verizon when this device came out. When on a call and a call comes in I place original call on hold and answer incoming call. If I then hang up on that call it hangs up on both people. Is there no call waiting?
Never had to tell someone they need to hang up so I can switch back to the other person on hold. Seems like either a bad carrier issue or bug? Never had CDMA carrier before so hopefully not an issue I'm stuck with?

deeznuts said:
Not sure if this is a carrier thing or the device? I switched from AT&T to Verizon when this device came out. When on a call and a call comes in I place original call on hold and answer incoming call. If I then hang up on that call it hangs up on both people. Is there no call waiting?
Never had to tell someone they need to hang up so I can switch back to the other person on hold. Seems like either a bad carrier issue or bug? Never had CDMA carrier before so hopefully not an issue I'm stuck with?
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This is a CDMA bug since it happens with Sprint as well. I was like you, I switched over from AT&T about 4 years ago. It absolutely drove me crazy for about a year until I just finally gave up and accepted it. I'm hoping that things will chnage when VoLTE becomes the standard:fingers-crossed::fingers-crossed::fingers-crossed:
UPDATE:
http://forums.androidcentral.com/sp...nd-just-one-call-while-another-call-hold.html

There is a solution on wikipedia
mademan420 said:
This is a CDMA bug since it happens with Sprint as well. I was like you, I switched over from AT&T about 4 years ago. It absolutely drove me crazy for about a year until I just finally gave up and accepted it. I'm hoping that things will chnage when VoLTE becomes the standard:fingers-crossed::fingers-crossed::fingers-crossed:
UPDATE:
http://forums.androidcentral.com/sp...nd-just-one-call-while-another-call-hold.html
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This just worked for me
https://en.wikipedia.org/wiki/Call_forwarding#Keypad_codes

easilybigger2 said:
This just worked for me
https://en.wikipedia.org/wiki/Call_forwarding#Keypad_codes
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What worked? Must have not seen the solution reading the link.

Keypad Code
deeznuts said:
What worked? Must have not seen the solution reading the link.
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If you have Sprint dial *38 and/or *720 to restore your call waiting. And for other mobile companies ##21#. But you can read through and find the correct deactivation. The problem happens because somehow call forwarding was active. I think it happened for me when I used my sprint number as my Google Voice number.

T-Mobile US Issues

I purchased my XZP about a week ago, and since it arrived, I've had issues receiving calls. I can make calls (it takes about 10-15 seconds to start ringing) but when someone tries to call me, it usually rings once for the caller, I get no rings on my end and then the calls go to voicemail. I am coming from the unlocked LG V20. I simply removed the SIM from that phone and placed it in the XZP. I have the dual-SIM version.
I discovered that I can receive calls when "GSM only" is selected under preferred network type, but that kills LTE. Any help would be appreciated.

holypuma said:
I purchased my XZP about a week ago, and since it arrived, I've had issues receiving calls. I can make calls (it takes about 10-15 seconds to start ringing) but when someone tries to call me, it usually rings once for the caller, I get no rings on my end and then the calls go to voicemail. I am coming from the unlocked LG V20. I simply removed the SIM from that phone and placed it in the XZP. I have the dual-SIM version.
I discovered that I can receive calls when "GSM only" is selected under preferred network type, but that kills LTE. Any help would be appreciated.
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I have the G8141 bought from UK and using in the US (Ultra mobile which is an MVNO running on tmobile). I've never had issues similar to what you said. Try a factory reset. Also what ROM version are you in?

gauthamsv said:
I have the G8141 bought from UK and using in the US (Ultra mobile which is an MVNO running on tmobile). I've never had issues similar to what you said. Try a factory reset. Also what ROM version are you in?
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I discovered that the issue is caused by poor service in my area. I have LTE but T-Mobile has used their LTE network to disguise that every other service in this area is garbage. If I drive a few miles away, my service works normally and I can use 3G data while talking on the phone. But at home, I stay on LTE and all my calls are directed to voicemail. I solved it by staying on LTE and using my Google Voice phone number full time and using the Hangouts Dialer app to make and receive calls. Its like I have VoLTE now. hah

Since the phone doesn't support (or vice versa) T-Mobile's VOLTE, the phone will only do calls on other GSM networks which T-Mobile is apparently phasing out. So data is great and the signal looks good, but then no calls in these areas. It's very frustrating. As mentioned above, calls over data from other apps do work. Hangouts, Digits, etc.

Unlocked on T-Mobile

Hi!
Hey any functionality lost by using the unlocked version on T-Mobile ?
Thanks

When speaking to Samsung about this, they told me all T-Mobile bands are supported including 5G on the unlocked versions. What you may lose is video calling (who cares) and possibly wifi calling. But in the past I've seen threads were talking to higher-level techs at T-Mobile can enable those features.

I noticed Samsung checkout page didn't ask if you need a SIM for the unlocked phone. In the past it would give you an option. So curious if you will need to go to the store for a SIM.

Thanks . Video calling is big with me . Rats

My Note 9 was unlocked from Samsung but video calling and Wi-Fi calling work fine. Not sure about this phone though.

Won't you just be able to flash the T-Mobile firmware via Odin if you get the unlocked? Then you get the best of both worlds. This is what I did with my Note10+. Got the Unlocked from Samsung then used Odin to get the official T-mobile firmware.

BigMosley said:
Won't you just be able to flash the T-Mobile firmware via Odin if you get the unlocked? Then you get the best of both worlds. This is what I did with my Note10+. Got the Unlocked from Samsung then used Odin to get the official T-mobile firmware.
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Same here

i had an unlocked note 10 + on tmo and had no issues with video calls or wifi calling. i got from the samsung site that the note 20 has an esim which i would guess is why you dont see any wording for a conventional sim...

marctronixx said:
i had an unlocked note 10 + on tmo and had no issues with video calls or wifi calling. i got from the samsung site that the note 20 has an esim which i would guess is why you dont see any wording for a conventional sim...
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I currently use an unlocked note 10+ on tmo that isn't flashed. The only limitation is that I cannot do tmo-to-tmo video calling. It may simply be a setting on my end but I never looked into it as there are so many options. Everything else works fine and I seem to get every update at the same time.

Dewda said:
I currently use an unlocked note 10+ on tmo that isn't flashed. The only limitation is that I cannot do tmo-to-tmo video calling. It may simply be a setting on my end but I never looked into it as there are so many options. Everything else works fine and I seem to get every update at the same time.
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To fix that issue you can flash TMobile rom onto the unlocked version.

jship said:
To fix that issue you can flash TMobile rom onto the unlocked version.
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Click to collapse
Thanks. I haven't flashed a rom before but there's lots of info available. If I don't upgrade to the Note 20 then I will flash the TMobile rom onto the Note 10+. If I do upgrade I will eventually flash the Note 20.

TMO user with S20 Ultra here. Don't use video calling so I could not say. Wifi calling works.
Third party VVM apps do NOT work and TMO's downloadable visual voice mail app is garbage IMHO.
When I put my VZW sim in the same phone the Samsung VVM app works beautifully.
Unlocked S20 Ultra 512GB here.
"5G" works on TMO where there is coverage however the speed tests show LTE as connection type. Interestingly enough some of the speed tests actually show 5G. Not sure what's going on with that. Have reached over 200Mbps down on TMO "5G" a few times. Most of the time it's the same speed as LTE. Don't care, it works, hot spot works nice too.
If you were to (properly) flash TMO firmware (in theory) it SHOULD make your phone just like a TMO bought phone including the cheesy jingle when booting up. Never tried it, I like the slim as possible approach. Plus the ability to drop in a VZW sim and it just works IS a MUST for me.

knuschit said:
When speaking to Samsung about this, they told me all T-Mobile bands are supported including 5G on the unlocked versions. What you may lose is video calling (who cares) and possibly wifi calling. But in the past I've seen threads were talking to higher-level techs at T-Mobile can enable those features.
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You don't lose wifi calling or video calling using unlocked on TMO.
Sent from my SM-G986U1 using Tapatalk

bkeaver said:
You don't lose wifi calling or video calling using unlocked on TMO.
Sent from my SM-G986U1 using Tapatalk
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What if anything do we loose?

a1atif said:
What if anything do we loose?
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I've been using unlocked devices on TMO for the past few years and everything works. I've not found anything that don't..
Sent from my SM-G986U1 using Tapatalk

tmobile visual voicemail has always worked for me on my samsung purchased unlocked 10+, so i guess our expectations are different.

Can't wait to see if I run into any issues with my unlocked on Sprint/Tmo

marctronixx said:
tmobile visual voicemail has always worked for me on my samsung purchased unlocked 10+, so i guess our expectations are different.
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Only if you use TMO's downloaded app which is utter $4!+ IMHO.
I hate it so much I just dial in to listen the old fashioned way. I screen calls anyhow so the ONLY time it rings I know who is calling so not really a big deal. If callers don't have the secret PIN they get hung up on! F robos!

What about roaming on T Mobile partner network? Will I get a network on my UNLOCKED Galaxy Note 20 Ultra if I am roaming on US Cellular or any TMobile partner Network?
Will my Unlocked Galaxy Note 20 Ultra support all 5G bands from TMobile? (Low, Mid and High ) Layer Cake so to say.
What about SA 5G (Stand Alone 5G) that TMobile just launched. Will the Unlocked Galaxy Note 20 Ultra support it?

Sprint frequencies
I'm mostly concerned about the Sprint frequencies T-Mobile is picking up.

Question Calls End Immediately or Can't be Received - And Speakerphone Won't Work

Very frustrated with Unlocked (USA) S22 Ultra. Somewhat frequently but intermittently my phone is unable to make a call. When I try to make the call it just ends immediately - and of note this is in full cellular service (4g or 5G) and also even if WiFi is on and the call is being attempted on WiFi calling. So it's not just a cellular network problem. The problem is reminiscent of back in the day when I would flash a custom ROM and the call features or CSC was messed up.
I believe a similar issue is that often I will get a text from my daughter (who the heck knows how many business calls I missed) - she says that she has tried to call all day and the call just ends immediately and won't ring through to me.
Looks like there are many complaints out there on the internet -- I am looking for a fix hopefully form someone int his community. I wonder if flashing ATT firmware on my unlocked phone would help??
Another problem is that sometimes (definitely intermittently) I am unable to activate the Speakerphone. Pushing the button highlights the Speakerphone indicator BUT the sound is still through the headset - not the speakerphone. Thoughts?

are you on June update? The latest june update seems to have fixed some of the GSM issue so maybe that would resolve your problem.

jcrompton said:
Very frustrated with Unlocked (USA) S22 Ultra. Somewhat frequently but intermittently my phone is unable to make a call. When I try to make the call it just ends immediately - and of note this is in full cellular service (4g or 5G) and also even if WiFi is on and the call is being attempted on WiFi calling. So it's not just a cellular network problem. The problem is reminiscent of back in the day when I would flash a custom ROM and the call features or CSC was messed up.
I believe a similar issue is that often I will get a text from my daughter (who the heck knows how many business calls I missed) - she says that she has tried to call all day and the call just ends immediately and won't ring through to me.
Looks like there are many complaints out there on the internet -- I am looking for a fix hopefully form someone int his community. I wonder if flashing ATT firmware on my unlocked phone would help??
Another problem is that sometimes (definitely intermittently) I am unable to activate the Speakerphone. Pushing the button highlights the Speakerphone indicator BUT the sound is still through the headset - not the speakerphone. Thoughts?
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Never ever had this problem (ATT - locked, 12/512 SD). if nothing else you may want to try to take to ATT for re-provisioning (I assume ATT may be who you are trying to use)

jcrompton said:
Very frustrated with Unlocked (USA) S22 Ultra. Somewhat frequently but intermittently my phone is unable to make a call. When I try to make the call it just ends immediately - and of note this is in full cellular service (4g or 5G) and also even if WiFi is on and the call is being attempted on WiFi calling. So it's not just a cellular network problem. The problem is reminiscent of back in the day when I would flash a custom ROM and the call features or CSC was messed up.
I believe a similar issue is that often I will get a text from my daughter (who the heck knows how many business calls I missed) - she says that she has tried to call all day and the call just ends immediately and won't ring through to me.
Looks like there are many complaints out there on the internet -- I am looking for a fix hopefully form someone int his community. I wonder if flashing ATT firmware on my unlocked phone would help??
Another problem is that sometimes (definitely intermittently) I am unable to activate the Speakerphone. Pushing the button highlights the Speakerphone indicator BUT the sound is still through the headset - not the speakerphone. Thoughts?
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Click to collapse
I had simmilar problems with exynos variant. After last june updates i think that cellular problems is gone.
But i am not certain this phone (wait for next updates) and now i use stable fold 2.

jcrompton said:
Very frustrated with Unlocked (USA) S22 Ultra. Somewhat frequently but intermittently my phone is unable to make a call. When I try to make the call it just ends immediately - and of note this is in full cellular service (4g or 5G) and also even if WiFi is on and the call is being attempted on WiFi calling. So it's not just a cellular network problem. The problem is reminiscent of back in the day when I would flash a custom ROM and the call features or CSC was messed up.
I believe a similar issue is that often I will get a text from my daughter (who the heck knows how many business calls I missed) - she says that she has tried to call all day and the call just ends immediately and won't ring through to me.
Looks like there are many complaints out there on the internet -- I am looking for a fix hopefully form someone int his community. I wonder if flashing ATT firmware on my unlocked phone would help??
Another problem is that sometimes (definitely intermittently) I am unable to activate the Speakerphone. Pushing the button highlights the Speakerphone indicator BUT the sound is still through the headset - not the speakerphone. Thoughts?
Click to expand...
Click to collapse
I got the U.S. Unlocked 512/12 Snap Dragon also. No problems on prepaid plan on TMobile. Maybe it time to ditch that Crappy AT&T sucketh Network.

Paul_Deemer said:
I got the U.S. Unlocked 512/12 Snap Dragon also. No problems on prepaid plan on TMobile. Maybe it time to ditch that Crappy AT&T sucketh Network.
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Point well taken - but for my area TMobile just can't compare to ATT with reception -..... and that brings up another point , maybe time to move from WV, lol .... oh yeah actually not funny but serious

jcrompton said:
Point well taken - but for my area TMobile just can't compare to ATT with reception -..... and that brings up another point , maybe time to move from WV, lol .... oh yeah actually not funny but serious
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West Virginia explains a lot! I am in South Carolina now but grew up in Pittsburgh so I drive thru West Virginia alot on 79 and not surprised about cell reception.

I've had this happen a few times with an Unlocked version on ATT. I'll try to make a call and it will just immediately end. A reboot fixes it, but if someone was trying to call me I would have no idea.

Have you tried clearing the dialers cache and data?
What about a third party app like googles dialer?

I had the same issue on my s21 ultra and went thru various fixed ( reprovision, changed sim, manufacture reset ..etc). I bought unlocked S22 ultra direct from Samsung and same issue. I have my work # on using physical sim and personal # esim. "when I try to make the call it just ends immediately - and of note this is in full cellular service (4g or 5G).." same issue around 10 times in the last 6 months. It happened on both physical sim and esim. The person who called either number went to voicemail and texting was fine. When I tried to call used either number and it will end right away. when it happened I would reboot and wipe cache partition. I haven't received June update yet and hopefully, that fixes it. I am also unable to send MMS on secondary # but SMS is fine.

Question Calls drop after 29m50s

Running xiaomi.eu 13.0.8 stable. All my outgoing calls end at 29m50s.
I have tried calling different numbers so not a problem with the called number. I have put my Vodafone UK SIM in my S22 Ultra and that's fine, but any call I'm on just terminates at 29m50s.
Has anyone else got this problem? Hopefully we'll see an update soon which may fix it.

this could just be your carrier having a call duration restriction, have you tried your sim card in another device to rule out carrier issue?

phibersg said:
this could just be your carrier having a call duration restriction, have you tried your sim card in another device to rule out carrier issue?
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Yes. It's just the Xiaomi 12S Ultra. With my Vodafone SIM and EE SIM, they both disconnect calls, and in an iPhone, S22, Pixel, etc. they don't

Upgraded to 13.0.9 and still got the issue
Can anyone else try a call and see if they have the same problem?

Has anyone managed to make a call longer than 29m50s?
Just performed a factory reset and same issue.

chistery said:
Has anyone managed to make a call longer than 29m50s?
Just performed a factory reset and same issue.
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fine here

SirTAVARES said:
fine here
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Thanks. Good to know it's not every device. I assume you're running xiaomi.eu 13.0.10?
I know it's not my SIM or my network, so it must be the phone, I just don't know what.

chistery said:
Thanks. Good to know it's not every device. I assume you're running xiaomi.eu 13.0.10?
I know it's not my SIM or my network, so it must be the phone, I just don't know what.
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Click to collapse
yea 13.0.10 eu.
no idea. the only thing i noticed is a drop of quality due the spot where i am, constantly changes between 3g, 4g, 5g depending on where i am. but making it 4g only fixes.

So I formatted/wiped and went back to 13.0.8
Managed a 31 minute call
Installed 13.0.10, didn't sign in to anything, update any apps, etc.
Call disconnected at 29m50.
Time to give up with this phone I guess.

Hi,
I'm experiencing the same issue and it's been behaving this way since day 1. I've tried two different SIM cards. I've even gone as far as factory wiping the phone and even disabling VOLTE and using 3G for calls but it hasn't helped. I'm running on the stock CN ROM.
I want to return the phone, but I doubt I'll get it refunded in full since I've been using it for so long and I'm unsure what Giztop would do and how I'd be able to prove to them it's faulty. v13.0.11 was just released recently and it's not helped either.
I've decided I'm going to wait for the Vivo X90 Pro+ or Samsung S23U and be done with this phone since this issue is a dealbreaker as I tend to make a lot of calls since I also use this as both my personal and work phone. I'm kind of disappointed and am going to miss the camera a lot.