Hello, I bought an S7A on eBay. I unlocked it with the GSM unlock code provided. Everything works fine, except ... I can't make or receive calls. When I make a call, no ringing tone, and it hangs up 20 seconds later. When someone calls me, the same, then they come across my answering machine.
I'm on the latest version of Oero available, no root or whatever. From what I saw (on GSMArena), the phone uses compatible frequencies in France.
I am at carrier Bouygues Teelcom.
You have any ideas ? Thank you !
PS: I translate from French, please be indulgent!
Same problem, this phone does not work in China
Since then I have understood the real problem: the phone cannot switch from the 4G network to the 2G network for calls on its own.
I don't know how I did it, but now I can make calls without any problem, but switching to 2G is very long (15 s).
I specify that it is impossible to use VoLTE to circumvent this problem.
For receiving calls, the phone does not switch to 2G and the incoming call still fails.
But I can force the 2G network (With the Samsung Band Selection app). And there, incoming calls work, but we only have 2G to surf.
When connected to WIFI, the phone automatically forces the mobile network to 2G, so incoming calls work without the application mentioned before.
Related
I have a HTC One M8, AT&T, TWRP recovery, flashed and rooted with ICE 8.2.2; SuperSu.
When I am connected to 4G/LTE and someone calls me, it rings on their end but my phone does nothing. I checked my IMEI and see LTE is supported. When I switch my mobile network from 2G/3G/4G (auto) to 2G/3G (auto), it connects (H, H+ icon) and my phone receives incoming phone calls. My SIM card does not mention "4G" or "LTE". I have yet to try the SIM in another phone yet but plan to tonight.
Just to help me out with my thought process on figuring out the issue I'm going to think out loud for a second:
Put my SIM in another phone and make sure 4G/LTE is on, check if it receives calls. If it works, the issue is my phone or ROM. If it doesn't work, SIM card is the issue.
Also, from what I understand, phones on 4G switch to 3G when a call comes in and my phone may not be doing that. Is there a fix for this?
EDIT: As additional info, I am able to make outgoing calls without issue on 4G.
Are you actually using AT&T as your cell provider?
Yes, and I made sure my APN settings are correct.
It's a known issue. AT&T's implementation of Voice over LTE (VoLTE) which they call "HD Voice" for some reason interferes with voice calls on custom ROMs on this device.
No real fix, aside from calling AT&T and asking them to turn off the HD Voice feature of your account. May need to ask for a 2nd Tier tech support to do it. Others here have posted they had to do that (and 1st Tier either had not clue what they were talking about, or wrongly claimed it can't be turned off).
Other threads discussing the issue:
https://forum.xda-developers.com/showpost.php?p=62001970&postcount=28
https://forum.xda-developers.com/htc-one-m8/help/receive-calls-make-detailed-thread-t3146670
https://forum.xda-developers.com/htc-one-m8/help/m8-receive-calls-flashed-wrong-rom-4g-t3365488
https://forum.xda-developers.com/htc-one-m8/help/phone-receiving-calls-help-appreciated-t3382019
Awesome. Thank you!
EDIT: Just finished working through the issue with an AT&T rep through online chat. Had me turn off my phone, disabled it on their end, and turned it back on. Did a test call and sure enough 4g switches to 3g as the call comes in and switches back afterwards. Problem Solved!
Hi folks,
I recently bought an Active Watch 2 and already have a Vodafone UK mobile account to which I added the One Number service.
I've discovered that on my watch while on 4G, I cannot make or receive phone calls.
There is definitely a data connection there, as I can send a text message or use the Internet browser app to view a website.
What happens is I dial a number, I get 2 beeps and then a Call Ended message. I've spent over 10 hours on the phone/chat to Vodafone trying to get this resolved to no avail. I've done a number of resets, SIM swaps etc.
This morning I noticed on the watch under Settings in the Phone app, that there is an option for "Preferred Number for Calls" which is greyed out and set to 'Watch'. I'm sure at one point when I first got the watch I was able to select Phone or Watch. Could this have something to do with it? Is the VF network blocking the call because the watch is trying to phone from the One Number secondary number instead of my contract phone number ?
Any help appreciated!
Hey there.
I have the exact same problem myself, my carrier is o2 and have an Active2 LTE.
Set everything up through the esim QR Code. I am the £5 data per month, and yet am unable to make or receive phone calls through LTE / Wi-Fi. No issues though with data and messaging.
It occasionally worked when I first set it up a couple of months ago, but since the latest Tizen update to 5.0 something, there is no option under 'remote connection' in the Galaxy Wearable app to make/receive calls. When testing my original Galaxy Watch out, the call option is there and it is on Tizen 4.0 and I am able to make WiFi calls.
At first I thought the issue was with o2 but am now thinking it is related to Samsung services. Via Bluetooth the Active2 works fine with call functionality but through WiFi/lte, nothing. The odd issue as well, is that, when testing through LTE on the watch it remotely connects very briefly to the phone when attempting the call but then the phone automatically disconnects from remote dialling.
I would say that it is definitely software related, I also have tried all troubleshooting issues and more with no luck.
Hey there. Have you managed to get a fix for this?
I have been in contact with both o2 and Samaunf on this very issue and Samsung are saying to send it in for repairs. I am very dubious though that it is a hardware issue, rather software related.
Hi I have now got both a galaxy watch and a galaxy watch3 here in the UK to now work stand alone on a pay as you go ESIM and wondered if some of my findings may help.....
First the Galaxy Watch i bought second hand on an auction site
it had been on EE in the UK and when i first loaded an esim on it I could not make calls or connect to the network...
I looked under settings connections mobile networks only to find that there was no option to select 3g / 3g4g mode ....
Hence the unit was setup only to connect via 4g data ....by default ....and so would only send Voice calls over LTE ...and hence when i changed the ESIM from EE yo Vodafone I could not make calls or SMS ...and only had emergency calls over vodafone if i was in a 4g service area with no ability to search for or connect to 3g
So I downloaded OXX versions of the firmware instead of OXA for the UK ...and i got the earliest version i could find.
Then loaded it onto the watch ... then I checked the CSC and EE where using a non BTU CSC code so first...
I changed the CSC to BTU so I could support non EE ESIMs
Next I Uploaded an ESIM from Vodafone via Galaxy Wear on a samsung phone over a bluetooth link after first activating
the esim test feature of wear app to enable QT code scanning to load the ESIM.
The OXX firmware activated the 3g 3g-4g section option under settings connections mobile networks so i could enable 4g/3g auto selection .....then the watch could find and connect to 3g or 4g networks and make voice calls and send / recieve sms.
then I put the watch into firmware download mode to install OXA firmware ...and it was an the oldest version i could find
the watch rebooted and so i now had OXA firmware with the 3g-3g/4g toggle still present under settings.
checked it was on 3g-4g auto selection.
then I enabled Dexv mode and made sure the CSC was still on BTU for generic UK ....it wasnt it had changed so I reset it to BTU
then I upgraded the firmware to the latest version via wear app ...
So end up with a generic BTU UK CSC with the latest Firmware BUT with the 3g/4g selection option under mobile networks.
with another service providers ESIM installed 3g/4g to auto select and it all works fine.
hence myadvice is if you dont have 3g/4g then the watch may be locked to 4g ONLY and VOLTE as its only mode with the CDC set to something generic EE for example...
Hope this is of assistance as many conplain that the watch wont work stand alone for voice calls or sms properly
my days of time and many esim tests until i got 3g support and 3g-4g auto load lead mr to think that the watch is often
locked to 4g data and VOLTE only ....
I now have done this on watch and watch 3 models with full sucess stand alone pay as you go esims ....with the watch fully stand alone...working like a normal cell phone ....with esim service with a different provider to the sim in my samsung phone
comment please .... hope that helps
Hi. My problem is different from this. I can make and receive calls from My Active2 LTE and I can also send text messages. However, I cannot receive text messages. Basically I bought this watch to rely on this for calls and messages and this got totally disappointed me.
Any advise on how we can receive text messages?
I have had this problem too. The issue is in phone settings. Go to ADVANCED FEATURES and turn on ALLOW CALLS ON OTHER DEVICES also turn on mobile data in this setting.
Hi,
I've bought the unlocked (Global) AT&T G8 Thinq! from Aliexpress and shipped it to Poland (EU). It seems that I can chose one of two - calls or Internet.
If I select the "2G" networks on, I can make calls and text messages, but the Internet is so slow, that it is unusable.
If I turn off the "2G" networks, Internet works fine, there is even a LTE icon, but I am unable to call and receive calls ('Mobile network unavailable' popup, when I try to call)...
There is no menu to choose network mode like 'LTE/3G/2G'...
Firmware is most up-to-date - G820UM20r.
Do you have any idea, how could I fix that?
BR,
Dominik
Hello, first of all I want to say that my native language is Spanish and I am using the Google translator to write this, so there may be writing errors and apologize.
Buy a motorola edge x30 and the imported import from China. The phone is unlocked to be used with GSM networks from anywhere in the world. When I bought it, I was with Metro PCS but in Metro I was told that the phone was not compatible with the 3G networks of them. After that I started to investigate and find a web page called kimovil and there I saw that the edge x30 was compatible in the USA with all the networks of 3 suppliers: Cricket, AT & T and T-Mobile: I choose to use change to metro by T-Mobile.
Immediately I left the T-Mobile store after making the change I have tried and could receive and send SMS, receive and make calls, and get access to the Internet without any problem. After a couple of hours of having activated services with T-Mobile, the phone could not or receive more calls (the Internet and SMS continue to work normally, the problem is only with calls). When I try to call someone, the call is not done and says "Hanging Up". I tried everything: Factory Reset, Networks Reset, modify network configuration, everything ... and I can not solve the problem. I went to T-Mobile to tell you about my problem and they tell me that the problem is not them but my phone.
If anyone knows how to solve this problem, I would greatly appreciate the help because I feel frustrated. Thanks
I have MOTO EDGE x30 with T-Mobile. Work perfectly. Check the SIM setting.
[email protected] said:
I have MOTO EDGE x30 with T-Mobile. Work perfectly. Check the SIM setting.
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Good afternoon. I already managed to use the Edge X30 with the T-Mobile network. You just had to put the network selector on automatic so that you can use 5G, LTE, 3G and 2G as you see fit. The problem is that I realized that the phone only calls and receives calls in 3G and 2G, which limits not only the quality of the calls but also limits your coverage to be able to make calls since you can only make them in 3G and 2G . You who also use T-Mobile, does the same thing happen to you?
I'm not sure, but it supports 5G in N1/N3/N5/N7/N8/N20/N28/N38/N41/N78 and 4G in B1/B2/B3/B4/B5/B7/B8/B12/B17/B34/B38/B39/B40/B41. or check volte settings.
you may try to install "carrier services" app by google from the play store. it solves some of my problem with data connection.
jorgerios15 said:
Good afternoon. I already managed to use the Edge X30 with the T-Mobile network. You just had to put the network selector on automatic so that you can use 5G, LTE, 3G and 2G as you see fit. The problem is that I realized that the phone only calls and receives calls in 3G and 2G, which limits not only the quality of the calls but also limits your coverage to be able to make calls since you can only make them in 3G and 2G . You who also use T-Mobile, does the same thing happen to you?
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Click to collapse
Yes I have the same issue. Whenever I make or receive voice calls, the phone falls back from LTE to 2G. I looked everywhere on the phone for 'VOLTE' settings but could not find it. Does VOLTE work for this phone on Tmobile? Very frustrating.
Has anyone been able to find the solution for the calls switching back to 2g? I love the phone but this is extremely annoying. I'm on T-mobile. Thank you
I have a GWA2, bought from an authorised and officially supported vendor.
ESIM is activated, watch can register itself onto network whenever it goes out of BT scope.
Internet is also working, so technically the connection works.
However the watch can not make any outgoing calls at all. I contacted Telekom (provider) but they are stating there is no issue has been found on their site.
Once I turned on the VoLTE on the watch (had to send a specific SMS to the provider), calls are working as they should. However there are many locations where VoLTE is not available due to bad signal and at those places the watch is still unable to make calls.
I have completely removed the eSIM and re-registered it. Didn't help.
Is anyone having similar issue recently?