Cannot make / receive calls - Nexus 4 Q&A, Help & Troubleshooting

I am unable to make or receive calls.
Whenever I try to make a call it says Mobile network not available. I get no signal from my carrier and I have to put *#*#4643#*#* change it back to GSM because for some reason it changes it to CDMA.
Whenever I receive a call same thing, lose all my signal and it aparanetly changes froim GSM to CDMA.
When I change it back to GSM I am able to browse and text with no problems but as stated above I cannot call.
If anyone has a solution or suggestion it would be greatly appreciated if you posted it here.
Thanks.

You should be asking your carrier.
Sent from my Nexus 4 using Tapatalk 2

They had no clue, just opened a case.

Related

Calls ending immediately (GSM Mode only works)

hello
I have had my note 3 or about a week now.
I cannot successfully make calls. I can receive calls and do pretty much everything else. Browse internet, sending texts etc.
As soon as i dial a number it takes a while to connect and then it ends the calls.
I am on Three. uk
I have tried with wifes Sim and the phone also fails with her sim but my sim works fine in her phone. so can rule out problem with the sim.
I have tried changing caller id to network mode as read that fixed Galaxy s II devices but that has not worked.
I have tried messing about with the different types of network mode. Only GSM mode works.
I am getting a full 4 bar signal.
I am on stock firmware SM-n9005
baseband n9005xxudmj7
build number jss15j.n9005xxudmk2
Anyone got any idea why this is happening or how i can fix it without sending phone off for repair ?? I have read elsewhere that the December update might have caused an issue like this ?
Many thanks
johnbhoy said:
hello
I have had my note 3 or about a week now.
I cannot successfully make calls. I can receive calls and do pretty much everything else. Browse internet, sending texts etc.
As soon as i dial a number it takes a while to connect and then it ends the calls.
I am on Three. uk
I have tried with wifes Sim and the phone also fails with her sim but my sim works fine in her phone. so can rule out problem with the sim.
I have tried changing caller id to network mode as read that fixed Galaxy s II devices but that has not worked.
I have tried messing about with the different types of network mode. Only GSM mode works.
I am getting a full 4 bar signal.
I am on stock firmware SM-n9005
baseband n9005xxudmj7
build number jss15j.n9005xxudmk2
Anyone got any idea why this is happening or how i can fix it without sending phone off for repair ?? I have read elsewhere that the December update might have caused an issue like this ?
Many thanks
Click to expand...
Click to collapse
Try factory reset with your wife’s sim inside, if still same problem I think service centre is only option.
by any chance, have you set your network mode to 4G only? cause afaik, the phone wont receive call if youre on LTE 4G only mode in network. once i too cant make a call when i set my network mode to LTE only, then i choose LTE/GSM/WCDMA auto, i can receive and make call again
Thanks.
I have tried reset and this does not work.
its definitely not on 4g . I have tried all the network modes and the only one that works is GSM... I dont want to leave it on GSM though as i want to be able to connect to internet whilst out and about.
Seems a bit ridiculous though that i cannot make a call on a phone. Will be off the the three shop tommorow.

Can't make calls when on LTE mode

I have n9005 rooted TouchWiz stock on 5.0,
when my phone is on LTE mode i'am unable to make/receive calls.
Kindly help me solve this problem.
Is the phone set to LTE only? If it is, does the carrier support VoLTE?
thahim said:
I have n9005 rooted TouchWiz stock on 5.0,
when my phone is on LTE mode i'am unable to make/receive calls.
Kindly help me solve this problem.
Click to expand...
Click to collapse
LTE/4G is a Data-Only network. To make calls over it your carrier needs to support Voice Over LTE, or VoLTE for short. Which is the mobile equivalent of VoIP.\
If your carrier does not support VoLTE, and your device is only allowed to access LTE, you can't make calls. Change to 'LTE/WCDMA (Auto)' (4G/3G) or 'LTE/WCDMA/GSM (Auto)' (4G/3G/2G) mode so the phone can automatically change to a network that supports voice codecs.
ShadowLea said:
LTE/4G is a Data-Only network. To make calls over it your carrier needs to support Voice Over LTE, or VoLTE for short. Which is the mobile equivalent of VoIP.\
If your carrier does not support VoLTE, and your device is only allowed to access LTE, you can't make calls. Change to 'LTE/WCDMA (Auto)' (4G/3G) or 'LTE/WCDMA/GSM (Auto)' (4G/3G/2G) mode so the phone can automatically change to a network that supports voice codecs.
Click to expand...
Click to collapse
My phone doesnt has LTE only mode so i keep it on LTE/WCDMA/GSM, still i can't make or rec calls.
Sent from my SM-N9005 using Tapatalk
How about switching to wcdma/gsm or wcdma only?
audit13 said:
How about switching to wcdma/gsm or wcdma only?
Click to expand...
Click to collapse
They work fine, but LTE.
thahim said:
They work fine, but LTE.
Click to expand...
Click to collapse
Something appears to be preventing the automatic switch from LTE to 3G/2G. Did you do something in the Servce menu?
ShadowLea said:
Something appears to be preventing the automatic switch from LTE to 3G/2G. Did you do something in the Servce menu?
Click to expand...
Click to collapse
My device didn't had the LTE option first so i did something which i don't remember now, what it was, i did it when i never used LTE, but as now i'm using LTE and came accross this problem. also i have installed a network type toggle app.
Sorry for being such a nub but where do I go to change the mode? Option > network operation? Thanks
Sent from Tapatalk {♤}
soul2eat said:
Sorry for being such a nub but where do I go to change the mode? Option > network operation? Thanks
Sent from Tapatalk {♤}
Click to expand...
Click to collapse
Network settings has that option for Network Type.
Regions  myanmar
Not receiving incoming calls on AIRTEL 4G LTE
Iam facing peculiar problem with the phone. Need help with the problem.
I am using samsung note 3 LTE. When ever some one tries to call me, my mobile is Not reachable or out of coverage area even when my mobile is in my hand , perfectly working with the second sim. outgoing calls are working fine. Again, when I am in call, then if any one tries calling me, then I get call waiting. So incoming call waiting is working for me. But incoming calls are not able to connect. LTE data is working fine though incoming calls are not working. 
Tried the following but no luck. Problem still persists:
1. Reset phone and erase all data
2. Hard reset phone (volume down + poweroff and clear all data in drive)
3. Tried changing SIM to second slot
When I switch the sim back to 3G mode or 2g mode , incoming calls are working perfectly fine . I googled it and found that most people had same issue and was resolved on switching back to 3G or 2g . 
But I need to use 4g . Please tell me a solution.
I had that same issue until I took my note 3 to Rogers and they said that the note 3 doesn't support Lte
Your rom must support VoLTE.
I would unroot and go back to stock firmware, and see if problem still happens,? if it does ,its most likely the sim card.sd card reader slot, (flex cable),my Galaxy s4 had the similar symptoms , but LTE would work with a custom rom, but not if I used stock firmware, replacing sim card reader flex , just google your mak and model and search ebay. mine cost a few pounds for a decent quality part, so dont go rushing to buy the cheapest. No problems since replacing that part, even after resetting phone 3 times to see if it was a fluke. I know its a bit late for a reply, but this actually worked , I am 99% sure it would work for anyone else who has this problem with lte not connecting when 3G, and 2g do connect. If you have tried swapping sim cards, putting sim in another phone,, etc,etc. this part mentioned(sim card/sd card reader) is your culprit. Took me just over 5 hours of testing to find the solution. thanks and fair well android users
---------- Post added at 06:49 AM ---------- Previous post was at 06:24 AM ----------
For many people having issues with LTE not connecting and diverting to voicemail on android, I am here to offer a solution to your woes. I have a Samsung Galaxy S4, GT-I9505, and recently in in 2018 in July, I had the same problem, phone calls connected on Gsm, Wdcma, BUT when I tried LTe mode, NOTHING, WENT STRAIGHT TO VOICEMAIL.Anyway I tried almost everything mentioned on certain websites and forums, with some luck, Changing LTE mode to GSM worked, and I could receive and hear phone calls. So I investigated further, I tried re flashing stock firmware, factory resetting phone.(nothing worked). I then rooted my phone and flashed a custom rom (do not try this) as it could damage your device if flashed wrongly. Yeah, so I flashed a custom rom, and low and behold problem disappeared, so I used my phone on LTE for 2 days, with no problems, I then decided to go bacjk to stock firmware, ...problem came back, not connecting to LTE mode..........being as patient as I can be, never gave up, and had a spare phone which was dead, just laying in the drawer, ..so ,I took phone apart and thought, it must be where simcard contact make contact with sim card reader contacts ( broken sim card /sd card reader part, and was I wrong, no, it actually was the sim card reader part which coonects with th motherboard, Voila, I am 99% sure if anyone else has this problem with any android that has LTE capabilities, and you know its not the sim card, then try this fix first, MAKING SURE YOU GET SOMEONE YOU KNOW TO HELP YOU , IF YOU ARE UNSURE OF WHERE TO BUY AD HOW TO FIT. hope this has helped,and I know it is a long thread, but hopefully it will be a solution that works for whoever reads and trie this, over and out. yours in sincerity, Tech82, from Surrey, England.
poddy82 said:
I would...
Click to expand...
Click to collapse
You are only 3 years too late. No big deal !
Sent from my Galaxy Note 8 using XDA Labs
In fairness post might be useful to some .
Where it is actually the sim holder .
But 99% of the problems are not the sim holder .
Though very odd that S4 user makes only one post and that's on a Note 3 forum not his phones forum .
i am facing the problem with my LGF180
This is Note 3 forum not your phone .

My nexus 6p can't call and receive call

Hi everyone please I need help
I buy nexus 6p form USA , and I am bring it at Saudi Arabia
After 2 weeks with a good mobile am surprised my phone can't call and receive calls
I tried to change preferred network to 2G or 3G but
I can't and I tried by *#*#4636#*#* still can't, only used lte and mobile data ,
I tried 3 sim card with different companies at my country
and the problem it's still
Please help me pleeeaaase
Hello please answer me
Tried calling the carriers for assistance?
Sent from a 128th Legion Stormtrooper 6P
Ferasmn said:
Hi everyone please I need help
I buy nexus 6p form USA , and I am bring it at Saudi Arabia
After 2 weeks with a good mobile am surprised my phone can't call and receive calls
I tried to change preferred network to 2G or 3G but
I can't and I tried by *#*#4636#*#* still can't, only used lte and mobile data ,
I tried 3 sim card with different companies at my country
and the problem it's still
Please help me pleeeaaase
Click to expand...
Click to collapse
Is your phone reading your sim card.. Did the network come up on the screen?
Yes it's reading a sim card , and I call carrier assistance
Please help me
Ferasmn said:
Please help me
Click to expand...
Click to collapse
Are you rooted?
Did you reboot your phone?
Did you do a factory reset?
Sent from my Nexus 6P using Tapatalk
Are you rooted? No
Did you reboot your phone? Yes
Did you do a factory reset? Yes
You said data works but calls don't?
Sent from a 128th Legion Stormtrooper 6P
Ferasmn said:
Are you rooted? No
Did you reboot your phone? Yes
Did you do a factory reset? Yes
Click to expand...
Click to collapse
did you reflash the Stock Rom?
You should give it a try if you didnt.(does not void warranty)
Contact google, they will probably send you a replacement if you dont want to mess with it that much.
Yes,data works but calls don't
I'm going to suggest a longshot here. It seems that you've gotten some good suggestions so far, so I want to throw this idea out there.
Have you "provisioned" your phone lately & updated the PRL? Meaning, have you told the phone to connect to your cellular carrier, then the carrier then tells your phone what services you are paying for & are supposed to have & what cellular towers you can use? Doing just this usually fixes all sorts of problems.
Go to Settings (the little gear icon), then More (in the Wireless & Networks). Cellular Networks, Carrier Settings. Tap on Update device config. Let it talk to the network. Tap on OK. After that, Update the PRL. Let it do it's thing. Tap on OK.
No reboot is necessary. It should be making calls, receiving calls & data should all be working.
Also, I keep the Preferred network type to global, although my carrier is CDMA & I'm in the US.
Hi dear , can't find carrier setting , I am search in the all my phone can't find it
Ctrl_Alt_Del said:
I'm going to suggest a longshot here. It seems that you've gotten some good suggestions so far, so I want to throw this idea out there.
Have you "provisioned" your phone lately & updated the PRL? Meaning, have you told the phone to connect to your cellular carrier, then the carrier then tells your phone what services you are paying for & are supposed to have & what cellular towers you can use? Doing just this usually fixes all sorts of problems.
Go to Settings (the little gear icon), then More (in the Wireless & Networks). Cellular Networks, Carrier Settings. Tap on Update device config. Let it talk to the network. Tap on OK. After that, Update the PRL. Let it do it's thing. Tap on OK.
No reboot is necessary. It should be making calls, receiving calls & data should all be working.
Also, I keep the Preferred network type to global, although my carrier is CDMA & I'm in the US.
Click to expand...
Click to collapse
Hi dear , can't find carrier setting , I am search in the all my phone can't find it
Please help me brothers..!
Ferasmn said:
Please help me brothers..!
Click to expand...
Click to collapse
Last time something like that happened to me was, when my old iPhone 6 had a blacklisted IMEI number. I could use all my data with the phone but not text or call anyone. Can you text people through SMS?
Yes I can text
Dears any solution s
Ferasmn said:
Dears any solution s
Click to expand...
Click to collapse
Really don't know either then. You said that you tried to change your preferred Network from LTE to 2g/3g but you can't? Are you always connected to LTE then? As far as i know you can't call on LTE.
my phone is also can not call and receive calls,text and 4G are still useful.It just stay in 4g and can not change to 2/3g.Hope someone can help us.

moto e4 verizon end call

hello this is my first post
i unlock the moto e4 verizon with unlock code and it was unlocked but the phone cant make calls anyone else have this problem with the moto e4 verizon
What network u trying to use ? GSM services will only work for data and text .calls just end
Why don't you flash the stock images from the unlocked variant?
Be default, Verizon lock prepay phones from making call.
Although that's interesting because call works for me using Mint Sim. Try factory resetting as well.
Had the same problem, and then noticed that there was no APN listed. After manually entering the APN info from my other T-Mobile phone, I was able to make and receive calls without any trouble. Only thing was that the network drops to 3G during the call--not sure what to do about that.
maybe worth a shot
change preferred network from 4g to 3g, make a call, and change preferred network back to 4g. It's been working for me in cricket that way. same thing in post #8 of this thread
harkay1 said:
change preferred network from 4g to 3g, make a call, and change preferred network back to 4g. It's been working for me in cricket that way. same thing in post #8 of this thread
Click to expand...
Click to collapse
is it a one time thing or do you have to keep doing it?
How did u get the unlock code from Verizon prepay?
Sent from my Moto E (4) using Tapatalk
guest_2011 said:
is it a one time thing or do you have to keep doing it?
Click to expand...
Click to collapse
one time thing for me, has worked after reboots
picsles said:
How did u get the unlock code from Verizon prepay?
Click to expand...
Click to collapse
got the code from ebay
The Verizon E4 Plus works fine for me after unlocked. Tested with both AT&T and Tmobile with no issues. I purchased yesterday at Target for $99 and requested $2 unlock code yesterday. Got code this morning and it works great.
For some reason the device automatically drops to 3G when making or receiving calls. However voice quality is good if not HD.
Overall this is a pretty strong device for under $100...shame is you cant unlock bootloader.
Here's a video showing receiving call and dropping to 3G.
After putting my Cricket sim card in, entering unlock code, and setting up the phone, I followed the "trick" so phone calls would stop dropping to 3G and stay on 4G LTE but it would not work. I tried the following:
1. Change to 3G, made a call, change to LTE, made a call and it still dropped/showed 3G
2. Change to 3G, made a call, and restarted phone. Change to LTE, made a call and it showed 3G still
3. Change to 3G, made a call, and restarted phone. Change to LTE, restarted phone, made a call and it showed 3G still.
The Cricket APN is set correctly as I see 4G LTE when not in a phone call. I am able to make/receive calls, sms, mms (for mms had to use Textra over the default Message+ app).
Any other ideas I can try to get phone calls to be on LTE?
zero2duo said:
After putting my Cricket sim card in, entering unlock code, and setting up the phone, I followed the "trick" so phone calls would stop dropping to 3G and stay on 4G LTE but it would not work. I tried the following:
1. Change to 3G, made a call, change to LTE, made a call and it still dropped/showed 3G
2. Change to 3G, made a call, and restarted phone. Change to LTE, made a call and it showed 3G still
3. Change to 3G, made a call, and restarted phone. Change to LTE, restarted phone, made a call and it showed 3G still.
The Cricket APN is set correctly as I see 4G LTE when not in a phone call. I am able to make/receive calls, sms, mms (for mms had to use Textra over the default Message+ app).
Any other ideas I can try to get phone calls to be on LTE?
Click to expand...
Click to collapse
mine also drops to 3G. nothing can be done about it.
guest_2011 said:
mine also drops to 3G. nothing can be done about it.
Click to expand...
Click to collapse
Hmm...someone on Slickdeals replied to me saying for Cricket, to get "HD-Voice", you need compatible Cricket phones, which the Moto E4 Plus clearly isn't --> https://www.cricketwireless.com/support/apps-and-services/hd-voice/customer/compatible-phones.html
Not a big deal about having phone calls drop to 3G. I was just curious because people and the wiki mention to do that "phone 3G/LTE" workaround.
I can't add any APN. On the Settings, I get a message "Access Point Name settings are not available for this user". There is no way for me to add any APN. Mobile Data works on my T-Mobile SIM.
Edit: Never mind. My bad. I was juggling two of these phones and only one of them had a SIM card. The one with the SIM card allowed me to add an APN.
But I wonder now how this is going to work when I travel abroad and have to use a SIM that would roam across multiple networks. I'd have to add each one manually? Without knowing which networks are available?
Phone(verizon e4plus ) took an ota while on att sim (was sleeping didn't notice til now ) now I only get busy signal tone when I call out I still have not and text messages just can't call out again without that dial tone happening

[HELP] Can't make calls on Slot1 after oreo (Data, Msg's work)

Hi Everyone,
I've been having this issue since a week or so(after oreo). I can't make make calls if i put my Idea 4g sim on slot1. Internet and messages works fine. No issues on slot2. Will appreciate any help thanks
jashd7 said:
Hi Everyone,
I've been having this issue since a week or so(after oreo). I can't make make calls if i put my Idea 4g sim on slot1. Internet and messages works fine. No issues on slot2. Will appreciate any help thanks
Click to expand...
Click to collapse
There could be 3 possible ways.
1) Software bug
2) sim slot pin breakage
3) sim card chip problem
Identify the root cause at first.
hemanth_gunasekaran said:
There could be 3 possible ways.
1) Software bug
2) sim slot pin breakage
3) sim card chip problem
Identify the root cause at first.
Click to expand...
Click to collapse
2nd and 3rd not possible. Since data and messages are working.
Can you provide more information.
Are you on 4g network.
What type of error do you get.
Your circle.
Have you changed your network settings using *#*#4636#*#*?
Have you tried calling using 3g and 2g only?
If not choose WCDMA only (use above code). Also try with GSM only.
!dea user here since a long time(familiar with all their problems and solutions)
Please answer above all questions in as much details as you can.
Please keep in mind that it can be an software bug
alkesh95 said:
2nd and 3rd not possible. Since data and messages are working.
Can you provide more information.
Are you on 4g network.
What type of error do you get.
Your circle.
Have you changed your network settings using *#*#4636#*#*?
Have you tried calling using 3g and 2g only?
If not choose WCDMA only (use above code). Also try with GSM only.
!dea user here since a long time(familiar with all their problems and solutions)
Please answer above all questions in as much details as you can.
Please keep in mind that it can be an software bug
Click to expand...
Click to collapse
Thanks for the reply man really appreciate it
Problem solved after i used Airtel SIM in that same slot for some time. Now my idea sim is working again. Thankx
Hey.... i have same problem.....i tried 2 different airtel sim .....they are working
alkesh95 said:
2nd and 3rd not possible. Since data and messages are working.
Can you provide more information.
Are you on 4g network.
What type of error do you get.
Your circle.
Have you changed your network settings using *#*#4636#*#*?
Have you tried calling using 3g and 2g only?
If not choose WCDMA only (use above code). Also try with GSM only.
!dea user here since a long time(familiar with all their problems and solutions)
Please answer above all questions in as much details as you can.
Please keep in mind that it can be an software bug
Click to expand...
Click to collapse
Hey.... i have same problem.....i tried 2 different airtel sim .....they are working fine in sim slot 2 but having problem in making outgoing calls while placed in sim slot 1. Data network and messages working fine but no outgoing calls.
As u told about *#*#4636#*#* its shows UTMS in voice network
Please help.....sim company saying it handset problem and handset company saying it sim problem.......... my handset is xiomi redmi note 4
My sim is working but I am not messages and calls are not working.
i have updated my mi a1 in pie. now i am not able to use calling and messaging.
kk2150 said:
i have updated my mi a1 in pie. now i am not able to use calling and messaging.
Click to expand...
Click to collapse
Same problem here. Solution for now is to change to 2G network, at least for me. When I try to call with 4G preferred sometimes it work, but when it works they can't hear me and I have to scream. This Pie update have so many bugs it is ridiculous. I can't believe they put such ****ty update to the masses it seems like BETA version. In Oreo when making call phone switches from 4G to 3G instantly now in Pie switches worry slow if it even switch and the signal is so bad that the call drops and that is in places where the signal is perfect
Hi, since last 4 days i am facing same ptoblem cellular SIM in slot 1 not working for incoming and outgoing calls and outgoing sms but internet and sms service (invoming) is working perfect on 4G
When i switch it to 3G/2G it shows no signals
But when i inserted this same sim in slot 2 all things work perfect. same problem occurred even when i inserted other network sim in slot 1 (internet and sms(incoming) worked but unable to do calls) I had factory reset but problem not solved
I am using poco x3 nfc
I anyone have solution plz tell me

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