Database Users

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 .

Help - Note 4 - SM-910G INU working only on 2g GSM.

UPDATE - 25/10/16 - Gave phone to Samsung Service center and they have updated me today that they found the radio is corrupted possibly so they have asked Samsung to give them a confirmation to proceed with Radio firmware reloading which includes IMEI re-coding. There's a chance of even them getting the device bricked of course but lets see what happens.
Hello all,
I have SM-N910G with latest stock rom (N910GDTS1DPI1).
Was using this phone on Reliance Jio VOLTE since end July and had set network more to LTE only (sicne RJio only has 4g LTE coverage).
Last thursday morning I noticed the phone is not registered on network and on trying to troubleshoot further by switching to a different (Vodafone) SIM, realized that the phone is only able to register on GSM (2G) networks and Edge data works too.
Have tried factory reset (and reloading of stock ROM thru ODIN including NAND erase using PIT files too) to check if I can get the phone to work on 3g/4g but no use. Seems like this is hardware issue (radio gone faulty?).
The phone is 18 months old so out of standard warranty hence I'm not much hopeful that Samsung Service center will be of any help. Before I take this there, just wanted to check if anyone else faced such issue before and have managed to sort the same out.
Cheers and thanks in advance.

udewal said:
Hello all,
I have SM-N910G with latest stock rom (N910GDTS1DPI1).
Was using this phone on Reliance Jio VOLTE since end July and had set network more to LTE only (sicne RJio only has 4g LTE coverage).
Last thursday morning I noticed the phone is not registered on network and on trying to troubleshoot further by switching to a different (Vodafone) SIM, realized that the phone is only able to register on GSM (2G) networks and Edge data works too.
Have tried factory reset (and reloading of stock ROM thru ODIN including NAND erase using PIT files too) to check if I can get the phone to work on 3g/4g but no use. Seems like this is hardware issue (radio gone faulty?).
The phone is 18 months old so out of standard warranty hence I'm not much hopeful that Samsung Service center will be of any help. Before I take this there, just wanted to check if anyone else faced such issue before and have managed to sort the same out.
Cheers and thanks in advance.
Click to expand...
Click to collapse
Check your apn settings go to settings/mobile notworks and manually edit apn for you specific carrier.

Trex888 said:
Check your apn settings go to settings/mobile notworks and manually edit apn for you specific carrier.
Click to expand...
Click to collapse
Thanks but it's not an apn issue. The phone doesn't simply register on any 3g or 4g networks. Hence the thought that it's hardware issue.

same problem
Please if you get any solution do post here
As I am facing same problem but in my case
I am getting 3g & 2g signal & data also but not
Getting 4g volte to any sim I tried apn setting
Changing hard reset also tried reinstalling firmware
But no luck
Please somebody help us out
Thanks

prasadamb said:
Please if you get any solution do post here
As I am facing same problem but in my case
I am getting 3g & 2g signal & data also but not
Getting 4g volte to any sim I tried apn setting
Changing hard reset also tried reinstalling firmware
But no luck
Please somebody help us out
Thanks
Click to expand...
Click to collapse
What do you mean by not getting Volte on any SIM? It's only for Reliance Jio. For other service providers, you need to get a 4G SIM before you can use 4G.
My phone is now dead bricked and beyond repairs as confirmed by Samsung service center. I'm not spending 15k for motherboard change.

4g
I have idea 4g sim but when I insert it
My note 4 doesn't shows it it says no sim card
Insert sim when I put Jio sim I get no service/ Jio 4g
Emergency calls only signal when I tried bsnl 3g
& Tata Docomo 3g sims both sims getting network
Signal & I can call also but when I tried to connect to internet by using these 3g sims my mobile connects and switchs off suddenly I have to pull out battery or connect to charger to start the mobile
This is my problem

prasadamb said:
I have idea 4g sim but when I insert it
My note 4 doesn't shows it it says no sim card
Insert sim when I put Jio sim I get no service/ Jio 4g
Emergency calls only signal when I tried bsnl 3g
& Tata Docomo 3g sims both sims getting network
Signal & I can call also but when I tried to connect to internet by using these 3g sims my mobile connects and switchs off suddenly I have to pull out battery or connect to charger to start the mobile
This is my problem
Click to expand...
Click to collapse
That's weird indeed. Have you ever tried any custom Roms or rooting because of which your Knox status would have tripped? In any case it's worth taking the phone to nearest samsung service center. They charge just 200 bucks to inspect the issue and another 200 to reload the software if needed. But in my case it was hardware fault so they couldn't do anything.

note 4
udewal said:
That's weird indeed. Have you ever tried any custom Roms or rooting because of which your Knox status would have tripped? In any case it's worth taking the phone to nearest samsung service center. They charge just 200 bucks to inspect the issue and another 200 to reload the software if needed. But in my case it was hardware fault so they couldn't do anything.
Click to expand...
Click to collapse
I haven't tried rooting yet and by the help of
A local mechanic who is a good friend of mine
And has a free entrance in local care center
We both went there and the care center gay
Tried to flash the mobile but no success now he says
That we should officially send the mobile to
The care center in a bigger city or like Mumbai
Where there are experts to tackle such weird problem

prasadamb said:
I haven't tried rooting yet and by the help of
A local mechanic who is a good friend of mine
And has a free entrance in local care center
We both went there and the care center gay
Tried to flash the mobile but no success now he says
That we should officially send the mobile to
The care center in a bigger city or like Mumbai
Where there are experts to tackle such weird problem
Click to expand...
Click to collapse
All the best mate. Just remember that they will ask you to sign up for Dead Brick risk which means you're OK if device goes dead during software flashing. The only way to get device working again is to replace motherboard which costs around 15k.

note 4
udewal said:
All the best mate. Just remember that they will ask you to sign up for Dead Brick risk which means you're OK if device goes dead during software flashing. The only way to get device working again is to replace motherboard which costs around 15k.
Click to expand...
Click to collapse
Thanks a lot for your advice I know that
That's why I am trying out side support
Let's see what happens
Again thanks for your cooperation mate

Hey i have the same Problem. i tried, reseting, other custom roms and much more but i dont solved the Problem.

No Network on Essential phone in India

I am currently in India, and trying to use my Essential PH1 with a Vodafone India 4G sim card. The SIM is not registering with the phone, and I am unable to get any network. I keep getting the message "your SIM is not allowed to use this network". I have tried contacting the local service center, but they tell me that the handset settings need to be changed. The same SIM works well with other phones in India.
I am using a Vodafone India 4G sim.. its a 'postpaid' connection (if that matters). When I manually select the network, all the available networks are listed, when I select "choose automatically", a message pops up "already registered on the network", but i dont get any signal.
When I manually try to select Vodafone IN from the list, pop up message says "your SIM is not allowed to use this network"
I have checked with Vodafone customer care, and they are sure its a phone config issue.
The same SIM works perfectly fine in any other handset. (Currently running the same SIM in Nexus 5)
Since this phone has not been launched in India yet, there is no technical knowledge or troubleshooting database available locally. Would you be able to help me with the correct settings so that the I can continue using the phone in India?

HI
I am having the same Issue with my phone, just bought it from US. indian SIMS not registering, were you able to find a solution for this?
Thanks

No.. not yet. The Essential customer care was supposed to get back, but they are not responding since the last couple of days. Do keep in touch if you are able to find a solution...
rahuljj said:
HI
I am having the same Issue with my phone, just bought it from US. indian SIMS not registering, were you able to find a solution for this?
Thanks
Click to expand...
Click to collapse

Hi
Received an OTA today for the device, Airtel and Vodafone are now registering ,. Jio is not able to register.
Cheers

I'm having a similar problem in Japan with Softbank, which ironically bought Sprint - the sole carrier of the phone in the USA.
There is no signal at all, and when selecting Softbank manually from the list of carriers, an error message stating it can't authenticate on the network popped up.

I faced the same issue a week ago, with both Airtel and Jio not registering the device on their networks. Yesterday, I booted up the phone again, installed the OTA, and was on my way to the Airtel store to talk about it. When I put in my SIM and turned it on, it got a signal and LTE data. I didn't try the same with Jio.
The most likely reason for the phone not being detected initially is that Essential has just one SKU, as far as I know, with all IMEIs of the 99x series. That's the typical IMEI series for Verizon and Sprint in the US, which are CDMA networks. Most other GSM IMEIs are of the 35x series.
I had planned to contact Essential support about this, but I didn't get down to it. I'm not sure what exactly made it work the second time. Maybe the OTA update changed something, or maybe Airtel took a while to auto-register (whitelist) the IMEI of this phone after it first detected it being used with a legitimate Airtel SIM. Regardless, it works just fine now.
NOTE: After I was able to get a signal, I could see the LTE symbol with no internet connectivity. I changed the preferred network type to "Global" in Settings and then it worked just fine. The default setting of LTE/TDSCDMA/CDMA/EVDO/GSM/WCDMA didn't allow data, only calls and SMS.

Yes am too facing same problem with essential PH1
used all operator Indian 4g / 3g sim card
even cdma also ...no result ...no network
Product Name -Mata
Variant Openus
Baseband 2.0.c4-M1.2
Secure boot Yes
Device State Locked
anyone some clue ???
regards,

When using outside of the U.S.A change network type to Global. Secondly insert the Sim (with the phone turned off). You should receive service when you turn the device on. In case you don't, give it a moment.
I had to replace my Sim as a last resort and then it worked without a problem.
Good luck.
-Nav

https://www.reddit.com/r/essential/comments/761q61/reliance_jio_india_coverage_works/

Can you please test it for jio sim also
Hi,
I am planning to import the unlocked essential phone from USA. Can you please check and confirm if it works with jio sim or not. As my primary sim is on jio.
Thanks
Riyaz
sashank said:
I faced the same issue a week ago, with both Airtel and Jio not registering the device on their networks. Yesterday, I booted up the phone again, installed the OTA, and was on my way to the Airtel store to talk about it. When I put in my SIM and turned it on, it got a signal and LTE data. I didn't try the same with Jio.
The most likely reason for the phone not being detected initially is that Essential has just one SKU, as far as I know, with all IMEIs of the 99x series. That's the typical IMEI series for Verizon and Sprint in the US, which are CDMA networks. Most other GSM IMEIs are of the 35x series.
I had planned to contact Essential support about this, but I didn't get down to it. I'm not sure what exactly made it work the second time. Maybe the OTA update changed something, or maybe Airtel took a while to auto-register (whitelist) the IMEI of this phone after it first detected it being used with a legitimate Airtel SIM. Regardless, it works just fine now.
NOTE: After I was able to get a signal, I could see the LTE symbol with no internet connectivity. I changed the preferred network type to "Global" in Settings and then it worked just fine. The default setting of LTE/TDSCDMA/CDMA/EVDO/GSM/WCDMA didn't allow data, only calls and SMS.
Click to expand...
Click to collapse
---------- Post added at 02:51 AM ---------- Previous post was at 02:48 AM ----------
Hi,
I am planning to import the unlocked essential phone from USA.
And my primary sim is JIO
Can you please check and confirm if it works with jio sim or not.
Will the essential phone support volte
Thanks
sashank said:
I faced the same issue a week ago, with both Airtel and Jio not registering the device on their networks. Yesterday, I booted up the phone again, installed the OTA, and was on my way to the Airtel store to talk about it. When I put in my SIM and turned it on, it got a signal and LTE data. I didn't try the same with Jio.
The most likely reason for the phone not being detected initially is that Essential has just one SKU, as far as I know, with all IMEIs of the 99x series. That's the typical IMEI series for Verizon and Sprint in the US, which are CDMA networks. Most other GSM IMEIs are of the 35x series.
I had planned to contact Essential support about this, but I didn't get down to it. I'm not sure what exactly made it work the second time. Maybe the OTA update changed something, or maybe Airtel took a while to auto-register (whitelist) the IMEI of this phone after it first detected it being used with a legitimate Airtel SIM. Regardless, it works just fine now.
NOTE: After I was able to get a signal, I could see the LTE symbol with no internet connectivity. I changed the preferred network type to "Global" in Settings and then it worked just fine. The default setting of LTE/TDSCDMA/CDMA/EVDO/GSM/WCDMA didn't allow data, only calls and SMS.
Click to expand...
Click to collapse

[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

Notwork Issue inside Home

Hello I have Lenovo K6 power. It can not connect to any network 4g/3g/2g inside my home. While other devices like samsung and Mi can access the network.
When I came outside of strret My device can connect the network. Can any one please help on this issue?

Contact me in 8921154867-whatsapp
Sent from my Lenovo K33a42 using Tapatalk

I have the same issue ..any solution for it??when i insert my sim card to another ph it will work fine but when i put the sim at my ph the internet not working but...other jio sim cards working fine..how to fix it??

Sanmoy said:
I have the same issue ..any solution for it??when i insert my sim card to another ph it will work fine but when i put the sim at my ph the internet not working but...other jio sim cards working fine..how to fix it??
Click to expand...
Click to collapse
Dail *#*#4636#*#*.
Clice phone statistics
Then click right coner
Click radio band
Select automatic. Band

anamulhaq said:
Dail *#*#4636#*#*.
Clice phone statistics
Then click right coner
Click radio band
Select automatic. Band
Click to expand...
Click to collapse
Bro if you are using k6 power on marshmallow can you please type *#*#4636#*#* go to radio band and send a screenshot as a reply. I want to flash back to marshmallow and I want to know if automatic option was available in radio band selection. As you see there is only United States available in the nougat version

My lenovo K6 note, can't use too call from sim card. and when i play youtube video will be lagging and n no sound . play game too no sound.but when i am play youtube from google chrome its work normally..
please help me.