Related
Telecom New Zealand has recently launced its "new" mobile network - WCDMA on 850MHz (it was a the rather antiquanted CDMA system prior!). Their range of "new" phones was nothing spectacular really and nothing much else worldwide appealed to me more than the X7510, so I duely purchased one from the UK.
When the SIM card was installed the unit come up with the following message:-
The Operator does not exist in the database. Please contact your Operator for the connections settings.
[Intrestingly enough, Vodafone NZ is in the database, even although the X7510 is not sold in NZ - but I digress!]
However the phone function and SMS appear to be working well, apart from the fact that it refuses to acknowledge the NZ Telecom Voicemail number. I get a good solid H in the Quick Menu Bar.
The data connection refuses to work at all though.
I have contacted "the Operator", but they are not all that interested in helping me as the X7510 is not a phone we support and while they've helped a little bit, the several HelpDesk Operators I've tried, all seem to end up with the same conclusion that everything the phone needs to know about the network and connection is on the SIM card.
When I open the SIM Manager, I can "see" some of the data there. (e.g. such as the Voicemail Number, but Voicemail on the phone Speed Dial is blank - no number stored). And when I try and connect to the Internet (using the number that Telecom provided verbally) it keeps asking for more Connections Settings, which I am told, there aren't any more to enter - it's all on the SIM!
It appears to me that the phone is trying to "capture" the Operator's Settings via radio rather than obtain it from the SIM!
Is there a way I can override the radio search function and get the PDA to "look" at the SIM card? Or maybe try any other method to obtain a data connection.
Any advice appreciated.
Cheers, Greg
Model No. ATHE400
ROM Version: 3.27.405.3
Protocol Version: 32.91.7020.20H
ExtROM Version: 3.27.405.104
I'm not too up on this, but I think your X7510 is NOT compatible with the TNZ system. Telstra use a very unusual hybrid of 850/2100 connections where most operators use 850/1900 or 2100 only. One is for upstream and the other for downstream where there are 2 figures.
Although it does support both 850 and 2100Mhz, they are on different frequency bands, so you could have the 850/1900 working OK, but not 850/2100.
What it means in practice is that whichever band you select, you will only get upstream or downstream UMTS connections, not both together. This may be why you see the 'H' but can't connect. In practice, you may only be able to use this phone on the slow GSM network.
Some of the other stuff is setup based, and some info you have been given is simply wrong!
To get the SMS and Voicemail number set, start the phone dialler, and go to Menu/Options/Services then scroll to the bottom setting in the window (VM and SMS) and tap it to highlight, then Get Settings. You may need to manually enter the VM access number you normally dial. Do 'Save to Network' and they should be OK.
For data access, you do not enter any phone numbers- you need to configure the setting as 'Cellular Modem GSM/3G' then enter the Access Point (APN) and any password and username.
It seems Telstra are cagey about publishing the connection parameters but I found this one:
GPRS APN: - telstra.internet
Username: - {blank}
Password: - {blank}
DNS: - 139.130.4.4, 203.50.170.2
As I suspect though, you may only be able to get GSM, not 3G/UMTS
NeilM said:
To get the SMS and Voicemail number set, start the phone dialler, and go to Menu/Options/Services then scroll to the bottom setting in the window (VM and SMS) and tap it to highlight, then Get Settings. You may need to manually enter the VM access number you normally dial. Do 'Save to Network' and they should be OK.
For data access, you do not enter any phone numbers- you need to configure the setting as 'Cellular Modem GSM/3G' then enter the Access Point (APN) and any password and username.
Click to expand...
Click to collapse
Neil,
You are a Gem! Okay, the first part didn't work, but I can enter the Voicemail as Speed Dial #2 or use the Voice Dial on the Parrot BT; so no real biggy that the X7510 simply will not accept the Telecom Voicemail number.
But I did hit paydirt with your data access suggestion and that was the one that was really important for e-mails and Internet access (as there aren't too many Wi-Fi Hot Spots in sparsely populated New Zealand!!)
Thanks so much for your prompt and excellent response.
Regards,
Greg
You're welcome!
Presumably you are only getting GSM speeds for your email and web access? Or do Tesltra do something different with their band splits to allow full 3G access?
It may be interesting to go to DSL Reports when you have a good signal and see what speed you are getting. You might have to repeat the test with a larger file than the default, but you'll get the correct prompts.
GSM will give you from 25 to about 100kbps (GPRS or Edge), 3G will give up to 300kbps and HSDPA can give up to 2Mbps
I don't know if you can do anything about the incorrect speed dial 1, but at least you have a workaround. Are you sure you manually entered the Voicemail number in the VM box in Options/Services/SMS and Voicemail> Get Settings ? I've just tried this with my X7510 and after editing the VM number, then hitting 'OK' it commits the change to Speed Dial 1 correctly.
[Edit. I can alter my Speed Dial 1 number by opening the Dialler then tapping 'Speed Dial', highlighting SD1 then Menu/Edit which opens the settings screen. Scroll to the bottom of the list to select Voicemail and Text Messages then Get Settings. Manually enter your voicemail access number then tap 'OK' which send the settings to the network and commits the change to SpeedDial 1. If that doesn't work, it may suggest Telstra are blocking the ability to change. ]
Once again, thanks for the prompt reply.
On that speedtest link you gave me I got: - 483, 489 & 319 kbps. This is off the local tower which is a good 20 kms from the city. I'll try in the CBD tomorrow and see what I get.
I had aready tried your suggested methods for locking in the Voicemail number, but to no avail. On my X7510 it's called Voicemail and Text Messages and when you highlight and then Get Settings, it always shows a number for the Text Message Service, but a BIG blank for the Voice Mail!!
Intersting comment you made about the Service Provider possibly blocking the ability to change?? If they are, lil' old me ain't going to get them to change that!
b.t.w. it's Telecom, not Telstra (who although here in NZ, are not a big mobile player like they are in Ausssie). I would guess that in NZ, Telecom has about 45% market share and Vodafone likewise.
I'll be in touch on best speed as at this stage, I appear to be somewhere between 3G and HSDPA?
Cheers,
Greg
ok- your figures are showing a pretty good connection speed so you are definitely in the HSDPA zone!
With regard to the blank box for the VM number: have you actually tried typing your VM number into the box then hitting ok?
Neil,
Yes I have tried typing in the Voicemail number directly under Phone Settings. When I hit OK, it says "Sending new settings to Network" and then comes back with "Cannot Save your changes"
On the speed - I have just picked up the "new" USB data card (for use on the same HSPDA Network) for my laptop and given that a try - wow! Download 6,485 kbs - Upload 1,445 - that's 1.5 x times the speed of my Office copper-wire broadband system. Telecom did promise some pretty impressive speeds and they are delivering (by NZ standards anyway).
I actually think your first summation of the this NZ Network being on 850/2100 (and not compatible with setup on X7510) might be correct Neil as about 545 kbs is the best I can achieve on the X7510. Hey, I can live with that, the other features of the X7510 make up for that and the laptop is never far away if I want to get some real speed!!!
Cheers,
Greg
Hello, I have a big problem with my Nexus S Eur (I9023 SLCD)
I bought it used but almost new, and no bill…
The phone, not modified, worked fine for 3 months. (2.3.4 GRJ22)
But one day I could no longer use the calls and SMS, while the Internet connection (3G) worked fine.
The majority of other sim cards are not properly recognized, but mine yes, it recognize the PIN code, the network (Numericable, a French MVNO), and correctly read the APNs. I can go on the net with data connection, but no call, no sms… (No MMS in the subscription I chose)
I tried to restore it with ODIN like I read here, it worked fine, but same problem.
I tried Custom ROM, custom Kernels, I tried ALL the radios of the I9023, no change…
When I call, no error it just hangs up the phone.
SMS, it says sms was not sent
The only one error I can read is, when I want to consult the call forwarding settings : “Network or SIM card error”
Any idea?
If the phone is a stolen one, and if the IMEI is blacklisted (3 months after?!?), is it normal that I still use the 3G connection?
The simcard work fine in my old phone
Thanks !
PS : sorry for my english, I do the best I can
No idea?
Maybe Hardware problem?
is the phone rooted?
try the *#*#3646#*#* to select your correct baseband settings.
When the problem started, the phone was rooted
After, I tried rooted and unrooted
With the 4636 I can access to the list of the baseband settings (now GSM/CDMA Auto (PRL) ), but if I change it (GSM only for exemple), it is not saved.... It doen't say anything, but if i quit the 4636 screen and return to it, it is GSM/CDMA Auto again....
I have this crazy issue with my D2G. I have had a similar issue in the past with all my android phones. It was worst with my SG2. It has not really been an issue up to now with my D2G but it is getting worse.
What happens?
When I call certain numbers there is no Audio in either direction, the call timer counts up and the call is in progress, just no sound in either direction. If the affected number calls me back, the same thing happens.
Which numbers are affected?
Only other mobile numbers. Always the same numbers. Always the same result. It was just an occasional mobile number, perhaps one in a hundred, but in the last couple of days BOTH of my gfs numbers are doing this and she has 2 separate numbers one attached to a D2G and one on a Samsung flip phone.
What have I tried?
Switch between Clean stock Froyo & Stock Gingerbread. Factory Reset, Wipe Cache, Wipe Dalvik Cache. Power Off Phone. Pull Battery. Nothing makes any difference.
If I pull my SIM from my D2G and place it in any other phone, the SAME thing still happens! If I swap the SIMS between 2 affected phones and try, it still happens.
**If I pull the SIM from my D2G and place it in an old Hermes I have lying around calls work perfectly in both directions.**
What works?
Calls to all landlines and most mobiles. Calling a number from the phone using GV or Skype.
Is there any pattern to the destination numbers?
Affected phones are all different brands and carriers, no pattern identified.
Thoughts so far:
It can not be the SIM card as it works in some phones.
It can not be the System version or Radio Firmware version as I get the same issue with Gingerbread and Froyo.
It can not be the cache or any settings specific to my phone.
One of the phones must be an android device.
***Ok, in testing now I just found the problem. If I have the phone set to UTMS then there is no Audio if the other phone is also a UTMS device, but it works fine if the other phone is GSM. If I have the phone set to GSM all calls work all the time to all devices.
The issue is calls between UTMS phones.
At least now I know i can always make/receive calls if I select GSM, I still want to find a solution though.
I am on the Telstra 850Mhz UTMS network in Australia.
I have had the exact same problem with 3 D2Gs. My first phone started after the last Verizon update to GB. That phone was replaced to to a failed dust seal and the first replacement had a failed BT chip. My third phone is now having the same problem, sadly. Of course I'm on Verizon on CDMA. Wish I knew what it was!!
Intermittent No Sound
I have a friend also with a Droid 2 Global
with this same issue.
Seems like leaving Bluetooth turned off altogether
has resolved this issue.
Seems like some sort of confusion when audio is
directed - perhaps audio is intermittently directed to
bluetooth when it should not be...
Any other info suggestions out there ?
Try using ShakeCall from the Market.
It should fix the "silent bug call".
It worked for me and rarely happens. Hope that works.
Please read the detailed post I made and don't post unless you understand what it implies. If you are having no sound problems because you have the volume turned down or mute enabled or you have a bluetooth bug, this has nothing to do with the issue that I have.
I have some kind of low level issue, my guess is that it is something to do with the codec selection based on the network transport type. The fact that the issue is there between 2 phones, then just changing to new Sim cards to identical carrier cards with different phone numbers, removes the issue suggests that the network is storing some information about the numbers. The fact that switching the D2G to GSM makes it work, suggests that the GSM codec is not affected.
I have my phone in GSM mode and now I can make and send all calls, but my data is so slow.
Is there a way I can force the phone to use a specific codec and stay on UTMS?
Ok, so I suspect it is the codec.
I found how to access the programming menu
On the phone's dail pad, enter:
##PROGRAM
Passcode is 000000
Most of the settings are for CDMA, under Test I can change the codec, I'll try some tests.
If anyone knows how to change the default codec let me know!
OK, I found the instructions on Droid Forums..
Pull up the dialer on your phone
Dial ##PROGRAM (##7764726)
Hit Send (the call button)
The password is 000000 (six zeros)
Select "Option 6 - Test Mode"
Hit "Next" until you come to the "Field test screen"
Under "Service Option" (top most), select EVRC-B
Hit "Back"
The phone should then reboot and you'll be all set.
OK, it seems all these settings are for CDMA, I can't find a way to access the GSM settings yet.
Thanks, mactherapy! I've made this change and will report back on whether it helps or not. Good find!! Too bad it won't help you, though.
Sent from my HTC Flyer P510e using xda premium
Well... so far the problem hasn't happened again. This is starting to look promising!!!
Sent from my HTC Flyer P510e using xda premium
Thanks. This works on Droid 3 as well.
mactherapy said:
OK, I found the instructions on Droid Forums..
Pull up the dialer on your phone
Dial ##PROGRAM (##7764726)
Hit Send (the call button)
The password is 000000 (six zeros)
Select "Option 6 - Test Mode"
Hit "Next" until you come to the "Field test screen"
Under "Service Option" (top most), select EVRC-B
Hit "Back"
The phone should then reboot and you'll be all set.
Click to expand...
Click to collapse
I have recently started having this exact same problem on telstra and it is driving me absolutely insane!
If anybody has ANY idea how to fix it on GSM/UTMS please let us all know.
Ok, I am still working on this issue. I figure that if there is some way of changing the default UTMS codec to be the same as the GSM that might work. I am still trying to find the setting for this. However I was looking through the build.prop and I found some settings that seem to have an effect on other issues that I notice.
If you edit build.prop and change the line
ro.mot.phonemode.vzwglobalphone=1
to
ro.mot.phonemode.vzwglobalphone=0
then reboot the phone
The phone behaves slightly differently, the signal strength indicators are more accurate for a start.
Also from what I can see the following options are set to Verizon defaults and are only useful for people on the USA and so should be changed for overseas users..
ro.telephony.gsm-routes-us-smsc=0
ro.cdma.home.operator.isnam=0
ro.telephony.default_network= (set to 7 for global, change to 3 for Gsm/UMTS or 4 for CDMA only)
ro.cdma.nbpcd
keygaurd.no_require_sim=false
These have been discussed a few times (especially .vzwglobalphone).
.gsm-routes-us-smsc is only applicable for Vodafone NL users; for all other carriers, SMS routing is done via local carrier's SMSC.
.default_network doesn't matter at all; it determines the mode the phone starts after a factory reset.
Hey there,
Through the search forum feature I found this issue,
My phone started to do it too, i'm using GSM/UMTS, I've been using the phone since last august and untill 2 weeks ago I didn't have problems.
What I tried was>
Change simcard,
change carrier,
I was on 2.3 I SBF back to 2.2
all without succes.
I only can call one mobile number properly all others are silen,t mobile and landlines alike.
Has there been more succes to get closer to resolve this? I don't mind helping finding it.
I love my D2G and i would get separation problems if I need to change phone
In the end there was nothing anybody could do.
Fault finders at my network provider were just as stumped as me. No amount of reflashing would change anything, the handset was cursed.
I ended up having to give up on it.
The problem continues to get worse. More and more numbers get no audio either when they call me or when I call them. It only happens on the WCDMA 850mhz Telstra network.
The phone behaves normally on any other network or on the GSM Telstra network.
Re-flashing the phone with Miui or CM7 or CM9 or any of the official Motorola firmware's makes no difference. It is a truly crazy problem.
I am going to buy another android phone from Telstra and see if that behaves normally with my sim card. A non android phone I have behaves normally.
The behaviour is still the same, if I am on 3G WCDMA 850mhz on the Telstra network, someone calls me or I call them, it shows the call is connected, neither of us gets any audio, no hash, just silence. Rebooting the phone, changing the rom, factory resets, changing the Telstra SIM, nothing makes any difference. Switch to GSM only and suddenly the issue goes away.
My GF also has a D2G and has exactly the same issue and it is getting worse for her too.
I am guessing that the network is storing something like the phones IMEI on the WCDMA network and then forcing an incompatible audio codec. I don't know enough about the operation of the network to be able to prove anything.
I would like to find some way to force or change the audio codec that gets used when I make calls, is there any way to see what the phone is using for each call?
Ok, another update. I have been doing some more testing. I have discovered that DTMF tones go through to a non Android Telstra phone . Any key presses on the D2G can be heard as DTMF tones on the other phone. DTMF tones do not register on the D2G.
Between two D2G phones on the 850mhz wcdma network there is no audio in either direction and the DTMF tones do not come through either.
As usual switch either phone to GSM and everything works perfectly again.
Right, here we go.
I got a call back a couple of days ago from a tel$tra tech.
This was a long time coming and I have since stopped using the phone altogether anyway.
Basically what you need to do is call telstra tech support and go through the Indian rigmarole with technical support.
These guys will eventually escalate your problem and an Australian tech will call you back.
This person too will be completely useless but do not give up hope.
What you need to do is this: gather data.
Sit down with an internet clock in front of you and log a series of phone calls to numbers that you know the fault exists with and record the details of each failed, no-volume call and weather it was incoming or outgoing, duration of call, type of handsets connected etc etc.
Even though I have given up on the D2G on telstra and moved on, the tech assured me that he would have been able to help with this issue as he had seen it before.
Long time no post, but I found something (I think atleast)
The no sound error occurred only when I make call over the 3G UMTS netwerk. When I forced my Droid on GSM only it worked again.
Has anyone tried this too?
My carrier (KPN Netherlands) has introduced "HD Voice" for it's voice calls over the UMTS netwerk.
Might this be something? Because my Droid started to get the problem around the time the pilot of "HD Voice" was rolled out.
I am posting this as a new thread as my reply on a similar thread got lost or ignored and I would really appreciate inputs :
Randomly at times when I try to register on network manually (MTNL Dolphin 3G - Mumbai). Unrooted MB865 ver 2.3.6 & updated on 18th May 2012 to System Ver 55.28.37.MB865.AsiaRetail.en03. If I keep the setting as Automatic in Type of Network & Operator it functions fine fluctuating between Dolphin for local access & CellOne on roaming access in the same area based on cell tower connection the phone registers on alternating between "E" & "H" automatically based on cell mast direction proximity, however if I select 3G only and uncheck automatic for operator then the phone searches for signal for a very long time and fails to show any operator saying "no connection available" & sometimes when "Dolphin" network does appear and try to select manually get the error as "this sim card does not allow connection to this network". I did complain with the service provider and they were supposed to get back to me after checking in their switchboard exchange where I also provided them my SIM number in addition to my cellphone number(no response). Also as is case with poor service of all Indian cell network providers even in urban cities, also face random peculiar issue of call not being received inspite of signal available on the phone & network asking me to recheck the number I have dialled while placing outgoing calls though it is ok and signal is sufficient. Also "Network Speed Booster" app looks like a lot of bull (any other good apps??)
I needed to know using the secret Menu *#*#4636#*#* for 3G GSM service which kind of network I should ideally select for best results & does this setting override the regular menu network settings??
I get "G", "E", "H" randomly based on my locations but no "3G" or "H+" and further at times these icons are grey and sometimes blue and in either cases randomly
at different locations sometimes data throughput is not there as only one of the arrow shows active blinking. Any advise on the status based on colors and the blinking of the arrows?? Thanks!
PS _ This is what another user had posted (do you guys feel this is a phone defect?)
I wasn't able to solve this problem about an year. But did. And totally sure that it is Device's defect (in some cases it is a ROM deffect as in my case, in other - hardware. Smth like stack overflow issues at GSM controller or so). A year ago when I had face this "sim card does not allow connection... " problem, there are no google serch results on this keywords request. Any. To remove this message I was ought to reboot my device every time it appears. And I was thinking that it is normal behaviour for my device. But now there are lot of complainings at the web ( minimum 5 of Galaxy Tabs P1000, thousands of HTC Disire, few motorolla Deffy, 10 Galaxy Ace, few of Nexus S and so on), so I understand that I'm not alone, and problem is known. So I went to Samsungs Service and they confirmed that it is famous problem, have flashed my phone with some magic ROM (magic because it is official but does not available anywhere in the web, XDA or samsung sites! ) and now my phone works fine. Any other solutions like battery removing, *#*#4636#*#* sirvice menu, new sim-card, flashing variety of modems and roms, didn't helps me. This is not faulty sim. This is serious device's defect. Bring your phone to manufacturer and let them repair it or give your money back. This is their problem not your.
Hello all,
I flashed my girlfriend's Sprint S5 with Lineage OS recently without a hitch, all services working perfectly. We ended up traveling, so she went to Sprint to set up a temporary international roaming plan. Everything was completely as expected abroad. When we got back, her phone would not send SMS messages.
We tried the usual airplane mode and such, and to no avail. Assuming something was wrong with the network configuration from travelling, we reset network settings. Didn't work. I then decided to just do a full wipe and re-flash of Lineage OS. Still doesn't work. I then resorted to going back to the stock TouchWiz ROM from Sprint. At that point, under the stock ROM, SMS were sending. Out of curiosity, we flashed back Lineage OS, and SMS will again not send. We noticed that if the SIM card is removed, SMS will send, but the phone would not be able to access 4G LTE. We also confirmed with Sprint that there are no restrictions on the account.
What could be causing this to occur only on custom Roms? Do we need to do a PRL update? If so, how does that work on stock Android?
Thanks in advance!
S5 sprint No outbound sms
I've had this problem for weeks....So far the only solution is using Google voice app....
I'm using LOS 7.1.1 20170207 kltespr nightly, LTE SMS can only receive, sending doesn't work. Only 3G SMS works.
Things I noticed:
Settings -> About Phone -> Status -> IMEI Information. When on 3G, all information is displayed here, when on LTE, only IMEI and IMEI SV is displayed, there's no PRL/MIN/MEID/ICCID anywhere, not even disabled or greyed out, just hidden completely.
ICCID also shows DUMMY_NV_ICC_SERIAL instead of the actual ICCID.
Same experience for me, I've been trying to find a workaround for over a month with no success. Alternative text messaging apps seem to work, but I don't trust 3rd parties with my SMS.
Unable to send SMS
Mike.
Which third party SMS app are you getting to work? Besides Google voice I have had no luck with any third party app?
I'm having the same issue. I'm on Resurrection ROM which is based on Lineage. Since update I can't send SMS at all other than via Google Voice. I can receive SMS and I can send/receive MMS.
I did find that if I change to 3g only for my network settings, I can send SMS. But then of course I don't get LTE data speeds for everything else. So the issue for me at least is tied specifically to LTE. Wondering if there is an APN or other setting I can change that would fix this but so far no luck finding anything.
Bug reported since 01/28
https://jira.lineageos.org/browse/BUGBASH-37
I've run into the same problem or similar. If I set my preferred network type to GLOBAL then I can send and receive SMS/MMS messages but I'm forced to either Roaming LTE or 3G. It's often stuck in 3G after a drive for any distance. If I force it to LTE, then SMS/MMS stops working and I can't place or receive calls either but the network will show up as LTE and Sprint.
To get there from Settings Home -> More (under Wireless and Networks) -> Cellular networks -> Preferred network type -> Choose Global.
Sometimes I can force it back to LTE but roaming if I switch temporarily to LTE then once it connects switch back to Global. Occasionally I have to put it in airplane mode to get the radios to reset and connect but some combo of switching network type and ending up in global and switching into and back from airplane will do the trick.
YMMV of course.
one way I fix it temporarily is to:
cell networks - carrier settings, let it crash
go in again and let it find your carrier
once connected, make a phone call at least to get it ringing
I can then make sms mms.
it's a rediculous work around but it works for me every time
SMS Sending Problem with Lineage 14.1 (31.07.2017)
Heyy
I'm not able to send sms from SIM 1 but can send sms from SIM 2 in Lenovo A6020a46 (2GB) on Lineage 14.1 (31.07.2017).
The same SIM is working good in another roms and Calling + Internet are working properly.
After dialing *#*#4636#*#* in Phone Information - SMSC Refresh then it appeared "Phone no.", 456 and I pressed Update.
But there was no process for saving or updating. Then I reentered in Phone Information but SMSC Shows blank.
What to do??? anybody help in this matter will be immensely appreciated.
Dilpreet Sidhu
I made this file using Odin with the steps from here. I flashed the file, set the connection to LTE aand it worked. https://forum.xda-developers.com/showpost.php?p=71582847&postcount=5908
To fix this issue with having LTE signal and sending SMS at the same time you have to open EnginneringMode app (or *#*#3646663#*#*) and check 'Sms over Sgs support' in Misc Feature Config tab.
Doesn't work because nothing comes up entering the code. Any idea?
2ISAB said:
Doesn't work because nothing comes up entering the code. Any idea?
Click to expand...
Click to collapse
If that code doesn't work for you, try to find an app called Engineering Mode MTK. Unfortunately I cannot attach any screenshots yet (I got less than 10 posts).
fix
there is an option in network settings (enhanced 4G LTE mode for comunications etc) i disabled that option and messaging works fine now. before unchecking this option i could only send sms only with phone on 3g mode, now it works fine. i think this option is for hd voice calls via 4g lte.
I see this is an old problem and I´m having the same problem. I can receive SMS, but I can´t send.
But to add to that, I couldn´t connect at all with my previous carrier and changed carrier after which I can use data, call and send SMS. I still can´t receive SMS.