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.
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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?
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Click to collapse
They work fine, but LTE.
thahim said:
They work fine, but LTE.
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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?
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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...
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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 .
Has anybody tried the G950FD on T-Mobile and AT&T in the US? Ideally Tmo on SIM1 and ATT on sim2.
I know the S7 couldn't switch well between the two networks as a dual sim phone.
Also is WiFi calling working? B12? Is SIM2 3G on AT&T or still just 2G?
Thanks!
Sent from my ASUS_Z00A using Tapatalk
I've done some more searching so let me clean this up for future searchers...
Q1. At&t will not work well on SIM2 since they killed their 2g network. There does seem to be a 3g antenna in SIM2, but for some reason still requires a 2G network. Tmo works fine in SIM2.
2) Tmo WiFi calling is not working. Though there is hope that this will work in the future (with root). Not much hope for a native solution.
3). Volte (b12) does seem to work with certain country modems. But as of today, its not clear which countries.
Sent from my ASUS_Z00A using Tapatalk
filterxg said:
I've done some more searching so let me clean this up for future searchers...
Q1. At&t will not work well on SIM2 since they killed their 2g network. There does seem to be a 3g antenna in SIM2, but for some reason still requires a 2G network. Tmo works fine in SIM2.
2) Tmo WiFi calling is not working. Though there is hope that this will work in the future (with root). Not much hope for a native solution.
3). Volte (b12) does seem to work with certain country modems. But as of today, its not clear which countries.
Click to expand...
Click to collapse
thanks for info
I have international S8 SM-G950F.
Recently, I switched to Ultra Mobile and contacted them about using VOLTE because they advertised it.
Ultra Mobile is a MVNO of T-Mobile. The reason I contacted them is because you need to have a SIM that is provisioned for WiFi Calling before it will work. I tested this by going into Connections, then Data Usage, and finally Mobile data. (Turn switch off and then try using the phone or sending MMS. Mine worked. But remember I contacted the carrier after they advertised that they have WiFi Calling....
I have a factory unlocked S8 I just recieved that I've been using on Straight Talk(verizon network) and that's been working fine but I wanted to test the reception of t-mobile in some places and I can't get anything to work. I have a Flash Wireless sim that I've used to at least see if I have service on other phones but I get nothing on the S8.
In Network Mode I only have the option for LTE/CDMA or CDMA. No Global or GSM options are even listed. Does this have to do with the SIM card not being properly registered? I would think I would have a Global option regardless of SIM I put in it.
mjsbullitt said:
I have a factory unlocked S8 I just received that I've been using on Straight Talk(verizon network) and that's been working fine but I wanted to test the reception of t-mobile in some places and I can't get anything to work. I have a Flash Wireless sim that I've used to at least see if I have service on other phones but I get nothing on the S8.
In Network Mode I only have the option for LTE/CDMA or CDMA. No Global or GSM options are even listed. Does this have to do with the SIM card not being properly registered? I would think I would have a Global option regardless of SIM I put in it.
Click to expand...
Click to collapse
I have the same problem. I'm on MetroPCS and I bought a Galaxy S8 used on Straight Talk before. I can't make any phone calls, but I have LTE and SMS works just fine. Does anyone else experience the same issue? I really appreciate any help. Thank you.
I recently brought Galaxy S8 SM-G950F (international unlocked) version and use Ultra mobile which in turn uses T-Mobile network in US. I have following queries:
1. Currently Wifi calling is not working nor can I see any options to enable/disable it. Does international unlocked phone do not have this feature? I tried the call setting menu and more connection settings but it does not appear in both of them.
2. After the call connects, my data switches to H or H+ (3G) but otherwise it remains on LTE/LTE+. Is this an issue with my phone or the carrier? My friend uses the same ultra mobile network with IPhone 6s and LTE works while on call so I think its not a carrier issue but not sure. I have heard LTE works on carrier provided galaxy s8 models.
I also have any option to exchange my phone for North America unlocked version S8 SM-G950U. Does this model supports above features? Should I go for this exchange?
ariesb2b said:
I recently brought Galaxy S8 SM-G950F (international unlocked) version and use Ultra mobile which in turn uses T-Mobile network in US. I have following queries:
1. Currently Wifi calling is not working nor can I see any options to enable/disable it. Does international unlocked phone do not have this feature? I tried the call setting menu and more connection settings but it does not appear in both of them.
2. After the call connects, my data switches to H or H+ (3G) but otherwise it remains on LTE/LTE+. Is this an issue with my phone or the carrier? My friend uses the same ultra mobile network with IPhone 6s and LTE works while on call so I think its not a carrier issue but not sure. I have heard LTE works on carrier provided galaxy s8 models.
I also have any option to exchange my phone for North America unlocked version S8 SM-G950U. Does this model supports above features? Should I go for this exchange?
Click to expand...
Click to collapse
You will not get wifi calling or volte on any of the unlocked phones while they are stock. Each carrier is slightly different on what u need to do. Tmobile only need a firmware flash with a carrier that has the option. Att is the hardest, many more steps.
Hello everyone
I bought a new RN7 global version and the seller told me it runs cdma
But when I insert my cdma sim it doesn't work . Any suggestions or trick . Or this redmi note 7 doesn't support cdma
Any body home !
same the problem
I have same the problem, I unlocked bootloader and installed China , indian, Rusia , and global eea Rom but still cdma not working.
zali111 said:
I have same the problem, I unlocked bootloader and installed China , indian, Rusia , and global eea Rom but still cdma not working.
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Click to collapse
I'm preparing to install Russian rom from xiaomi . So you advice me not to do
I'm pretty sure that it is a GSM only phone. The W-CDMA listed in the specs is actually UMTS, the competitor to CDMA2000 and the 4G standard used by GSM networks.
What network are you trying to connect to?
smallmj said:
I'm pretty sure that it is a GSM only phone. The W-CDMA listed in the specs is actually UMTS, the competitor to CDMA2000 and the 4G standard used by GSM networks.
What network are you trying to connect to?
Click to expand...
Click to collapse
Yes it is CDMA2000 EVDO.
When I insert *#*#4636#*#*
I have cdma among networks' list.
I don't think it is going to work. Which cell provider are you trying to use? In what country?
Most US reviews of unlocked phones specify that they will only work on GSM networks like T-Mobile.
smallmj said:
I don't think it is going to work. Which cell provider are you trying to use? In what country?
Most US reviews of unlocked phones specify that they will only work on GSM networks like T-Mobile.
Click to expand...
Click to collapse
I'm from Yemen Arabia. My network is Yemen Mobile Telecom.CDMA2000 3G EVDO.
and the rn7 reads the sim information like network name and services on the sim .
I have no idea about Yemeni carriers, sorry. Have you tried calling them?
Jassas1 said:
Hello everyone
I bought a new RN7 global version and the seller told me it runs cdma
But when I insert my cdma sim it doesn't work . Any suggestions or trick . Or this redmi note 7 doesn't support cdma
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Click to collapse
Hi I don't know if this helps anyone and I know this is an older post but I think I found how to turn CDMA on. developer options enabled, go into about phone settings and tap "internal storage" until it opens up phone info. Choose the sim slot and there you can set preferred network to CDMA only or something like that. I don't know much about mobile network but I saw that CDMA setting in there.
That menu you get after clicking on internal storage is the same as typing *#*#4636#*#* in Phone. I've tried changing it to CDMA only or LTE/CDMA but nothing happens, the UIM card is recognized but it can't log on to the network.
More info: the Global Rom version of the phone only works with CDMA carriers that have LTE data and VoLTE voice. It does *not* work over CDMA 1x or EVDO. I had to swap a new China Telecom UIM to get VoLTE working.
Hi. I bought Redmi Note 7 Pro from aliexpress with global Rom. It does not connect to my carrier in Poland. The status of the sim keeps changing from no service to emergency calls only every 2 seconds. Is there any way to fix it?
RN7 not work on the network CDMA.
Enviado desde mi Redmi Note 7 mediante Tapatalk
Is there anything I can do or should I return the phone?