Anyone using, or planning to use, the HTC Touch Cruise on the UK T-Mobile network will very probably need to do a special setup on their device to get voicemail access working properly.
The symptom is that your callers will be able to leave you voicemail messages but you will not be able to pick them up from your phone. When you get a voicemail message you will get the notification but when you press the soft key to access voicemail it will dial the number but you will then get an error message saying "access to this number is barred" and the system will hang up on you.
If you try accessing voicemail by holding down the "1" key or by explicitly dialing the voicemail access number retrieved from the network (probably of the form "+44050<your mobile number minus the leading zero>" or ""+44068<your mobile number minus the leading zero>") you will get the same message. Dialing 222 will work but will also initiate a voicemail setup message each time and however many times you switch your phone on and off to reload the voicemail settings from the network it still won't work.
I just spent 2 days with the very helpful T-Mobile support to sort this out, ultimately getting escalated up two levels in the technical support group, until I got someone who recognised the problem.
The issue is simple to resolve. The problem is that the format of the voicemail access number that the T-Mobile UK network pushes down to the handset is incompatible with the HTC software on the Touch Cruise (and maybe other devices too). The thing the software doesn't like is the "+" at the beginning.
To fix it go to the Settings/Personal/Phone application and click the second tab ("Services"). Now select "Voice Mail and Text Messages" and click "Get Settings...". You should now see a screen with two access numbers populated, one for voicemail and the other for text messages. Both will probably start with "+44". The text message access number is OK so don't mess with that but the voicemail access number won't work with the UK network. Simply replace the "+" with "00" and click OK and then your voicemail should work as you expect.
I haven't tried accessing voicemail outside the UK so it is possible that the above might break your access when roaming and you might need to edit back the "+" when travelling. I'd be interested in knowing if anyone has any experience with non-UK access and a "0044..." setting rather than the default "+44...", does it dial the UK access number OK?
(Actually, I never looked at the mechanics of accessing voicemail outside the UK, does it still dial the UK number or does the host network automatically push an alternate local access number to your phone when you register with the network?)
- Julian
Nice on Julian. I bought an Orbit 2 on O2, but my number doesn't transfer to O2 for few days yet, so have been using my T-Mobile SIM, and also experiencing this problem.
Thanks for sharing the tip!
I'm on UK T-Mob Web&Walk. Switched the +44 entry to 0044...but my TC then coundn't send texts. Switched it back and fortunately can still access voicemail as well as send texts. Strange.
I'm with T-mobile running an old T-mobile sim card on my new TC, when first called voice mail it gave me a long introduction then said "turn of your mobile off and on again to not get this messages again", I turned TC to "air plain mode" back to on mode and everything was cool from there on.
It seems that not everyone have that problem OR T-mobile has sort out that problem after Julian told them about the problem. In any case, thanks Julian to share this with us.
PS (today after reading this post is the first time that I use voice mail with my new TC)
Similar problem on WM 6.5 Asus Crystal
I had exactly this problem with T-Mobile and WM 6.5.
T-Mobile technical support was excellent, ringing back on several occasions to ensure that the problem was fixed, even though my handset is not a supported model. Once I was put through to 2nd layer support they fixed it in seconds.
In a nutshell, if you text and voice service centre numbers begin with a +44......, change them to 0044......
This did not happen on my XDA Exec WM5.0, so appears to be a new thing in WM6.5?
Related
Hello
I got myself a shiny new TyTN. So far (coming from Blue Angel, then Universal), I'm very impressed with the device. There's only one slight nuisance: I don't receive text notifications for new voicemails anymore. I just spent about half an hour with my operator's technical (competent, by the way) support trying to sort this out.
They told me these notifications were a special category of text messages; say I have one voicemail waiting for me - I get a text message "You have 1 new voice mail in your voicemail box". If I don't listen to it and I get a second, the network only sends an update telling me "You have 2 new voice mails in your voicemail box" etc. I guess this works the same in other countries as well.
Support did a trace and they saw that the notification not only went out, but was acknowledged by my device after between 8 and 40 seconds. Still, my device doesn't show the message. Is there any tool I can use to purge the text message cache on my SIM card (support told me the messages were stored on the SIM)? Or is it possible HTC f***ed up and implemented this feature wrong, so I would have to wait for a firmware update?
@Fermin
I own an Orange device (SPV M3000). When I receive a notification about voicemails it shows up like an SMS message.
I had a look on the WorldWideWeb and found some information for you
1---
I had the same problem today. I was notified of the voicemail and I checked it. Erased the voicemail and the notification still remained. For the life of me i couldn't get it to go away. I tried to dismiss it like 20 times and nothing...finally I had to call my own phone from work leave a test voicemail and check it again. Erased it again and it went away.
---
2---
Try this:- phone>menu>options>services. You should see an array of listings including "Voice Mail and Text Messaging".
Highlight this and then >get settings.
You should have a number in the 'Text messages service center' box.
If you don't - it's a quick call to your provider.
---
Hope it can help you out!
Let me know if it doesn't.
Wondering, did you perform a hard reset to see if that fixes the problem?
Why do you want to receive a text message when you get a voicemail? The device supports the protocol that delivers a 'spool' icon to the phone when a vociemeial is waitign to be received. This icon is directly linked to the voicemail, meanign that it cannot be manually deleted by the phone user. When you have listened to the voicemail, the icon disappears. Great! That is as it should be. I am aware that not all networks use this systme but i have never understood why not. It is the most reliable method of knowign that you have unheard vociemails.
I have very occasionally had the problem that the icon wouldnt disappear after listenign to the voicemail. I found that if i rang the voicemail again, that often cleared the icon. Failing that, if a new voicemail comes in & is then listened to, that will generally clear the icon at last.
I used to use a network that didnt support this icon, & so i had to rely on either the phine ringing me to tell me that i had a vociemail (if i can;t answer the original call, how on earth can i answer anither call to tell me that i have a voicemial!!) or getting a text message. The problems with the text message method of notification is that (i) i have to opne & read the SMS to discover that it isnt really a text, but a voicemail, and (ii) if i delete this sms but then get interupted before i call my voicemail, then i no longer have a reminder to check my vociemail and (iii) if i listen to the vociemail before delteign the sms and then get interupted before deletign the SMS, i still have an sms tellign me that i have unheard vociemail, even though i have already listened to it!
For all these reasons, i have always thought the best method is the spearte notification 'spool' icon, as i can immeidately see that i have voicemail, as opposed to unread sms & can just press the icon on the home page to dial my voicemail.
If anyone prefers the alternative methods, please explain how they are better than this.
If you are on Orange in the UK, the numbers in the "Voice Mail and Text Messaging" menu should be:
SMS Centre: +447973100973
Voicemail: +447973100123
BTW I'm still using the Magician (Orange SPV M500), but i asume that the Hermes/TyTN works the same way.
Does anyone know when Orange will brign out the Hermes? I heard they were brandign it as M3100.
<snip> Does anyone know when Orange will brign out the Hermes? I heard they were brandign it as M3100.
Click to expand...
Click to collapse
They said july to me last week.
cc said:
Why do you want to receive a text message when you get a voicemail? The device supports the protocol that delivers a 'spool' icon to the phone when a vociemeial is waitign to be received. This icon is directly linked to the voicemail, meanign that it cannot be manually deleted by the phone user. When you have listened to the voicemail, the icon disappears. Great! That is as it should be. I am aware that not all networks use this systme but i have never understood why not. It is the most reliable method of knowign that you have unheard vociemails.
I have very occasionally had the problem that the icon wouldnt disappear after listenign to the voicemail. I found that if i rang the voicemail again, that often cleared the icon. Failing that, if a new voicemail comes in & is then listened to, that will generally clear the icon at last.
I used to use a network that didnt support this icon, & so i had to rely on either the phine ringing me to tell me that i had a vociemail (if i can;t answer the original call, how on earth can i answer anither call to tell me that i have a voicemial!!) or getting a text message. The problems with the text message method of notification is that (i) i have to opne & read the SMS to discover that it isnt really a text, but a voicemail, and (ii) if i delete this sms but then get interupted before i call my voicemail, then i no longer have a reminder to check my vociemail and (iii) if i listen to the vociemail before delteign the sms and then get interupted before deletign the SMS, i still have an sms tellign me that i have unheard vociemail, even though i have already listened to it!
For all these reasons, i have always thought the best method is the spearte notification 'spool' icon, as i can immeidately see that i have voicemail, as opposed to unread sms & can just press the icon on the home page to dial my voicemail.
If anyone prefers the alternative methods, please explain how they are better than this.
If you are on Orange in the UK, the numbers in the "Voice Mail and Text Messaging" menu should be:
SMS Centre: +447973100973
Voicemail: +447973100123
BTW I'm still using the Magician (Orange SPV M500), but i asume that the Hermes/TyTN works the same way.
Does anyone know when Orange will brign out the Hermes? I heard they were brandign it as M3100.
Click to expand...
Click to collapse
I've never seen that spool icon before, where would it be located? As far as I know, my operator does only support text messages notification :-(
I checked the settings; SMS Centre and Voicemail are configured as they should be, and I even changed them to something else and then back to the correct settings just to be sure. Everything else concerning text messages works, so I guess the settings are correct.
If I put the phone near my computer's speakers when a text message about a new voice mail should come in, I hear the "mobile blues" in the speaker, so I'd say the support specialist was telling me the truth when she said a trace showed that not only was the message being sent out, but that my phone even acknowledged reception.
I'm somehow stuck... but thanks for your help. Guess it's either start hunting for registry settings, or start hoping for a new ROM release
There are some strange things with the latest ROM that HTC produces.. ..I now about a Prohet problem that send an SMS multiple times, or even recieves it multiple times..
Will keep my eyes open for a solution for your problem!
Did you try the Hard Reset option?
It seems like the same problem I had on my SPV C600 when I wanted to receive an vCard.. ..the phone would light up but that was it.. ..strange phenomenon
It may only be Orange that support this icon, but is a VERY useful feature & has been around for many years. I know that Vodafone & O2 in the UK do not have it, but i thoght that T-Mobile do. I dont understand why they dont all implement this feature. I wouldnt use a network that didnt use it!
The 'spool' icon looks a little like: o_o (it represents a tape reccorder!)
For some info on it, see:
http://discussions.nokia.co.uk/discussions/board/message?board.id=phones&message.id=2965
http://www.voip-info.org/wiki/view/Getting+MWI+on+Polycom+Phones+to+work+with+Asterisk
mccune said:
There are some strange things with the latest ROM that HTC produces.. ..I now about a Prohet problem that send an SMS multiple times, or even recieves it multiple times..
Will keep my eyes open for a solution for your problem!
Did you try the Hard Reset option?
It seems like the same problem I had on my SPV C600 when I wanted to receive an vCard.. ..the phone would light up but that was it.. ..strange phenomenon
Click to expand...
Click to collapse
Thanks for your help. Hard Reset is a last resort option - and I can't really see that this would be a solution, since the device is brand new and the feature never worked in the first place. I get about 3-4 voice mails per day, so I should have received them from the start. I just didn't notice they were missing until a day later - guess I was too preoccupied drooling all over the device :wink:
I have the same problem with my brand new TyTN and it seems that we're not alone. It definitely is a ROM bug.
I already reported the problem to HTC and hope we'll have a solution within days.
Hi guys,
Same problem with my new v1605 TyTN. Spent 4 calls now to Vodafone support and each time they tell me they can see the SMS being sent and that it is acknowledged by the device. However, I never receive any notification of the text message. If I switch the voicemail to use call-and-deliver it phones me within seconds of a voicemail being left.
I tried hard resets, vodafone tried resetting my voicemail - all to no avail.
So - am glad to hear others have this and think it is ROM related. Hope there is a fix soon...
Rich
Am tempted to call vodafone back and let them know....
I *did* call Vodafone to tell them and after some waiting I was told that the tekkies knew of the fault but the manufacturer had not given a fix date yet. They say that once the fix becomes available it will either be sent over air to the device (I find this hard to believe) or a download will become available through their website.
R
I have to say that it works fine with mine. I use the 242 version not 121 and with text and notify it works exactly as it should. Text and spool symbol arrive straight away and go when they should do.
ROM Version 120.161.3
Rom Date 06/06/06
Radio Version 1.03.06.00
Protocol Version 32.36.7010.01W
What is the 242 version, how do I switch from the 121 and what are the implications, if any?
R
EDIT - went to vodafone.net to sign up for this - got as far as 'Your security code will arrive as a text message' and of course - this never arrived. Must be some problem with service originated SMS messages to this handset....
I had the same problem with the Voicemail notification and have found this somewhere in the internet. I have tried it and it works for me.
HKEY_Current_USER\System\State\Messages\vmail\Line1\Unread\Count
the value is more than 1
Change the DWord value from more than 1 to 0 and the problem just disappeared.
Try it and see if it works for you.
Good luck!
Mine was already set to 0 Thanks anyway...
Still waiting for a fix....
Rich
ywilson said:
I had the same problem with the Voicemail notification and have found this somewhere in the internet. I have tried it and it works for me.
HKEY_Current_USER\System\State\Messages\vmail\Line1\Unread\Count
the value is more than 1
Change the DWord value from more than 1 to 0 and the problem just disappeared.
Try it and see if it works for you.
Good luck!
Click to expand...
Click to collapse
I dont have Count. I have
HKEY_Current_USER\System\State\Messages\vmail\Line1\Unread\
??????
mccune said:
@Fermin
I own an Orange device (SPV M3000). When I receive a notification about voicemails it shows up like an SMS message.
I had a look on the WorldWideWeb and found some information for you
1---
I had the same problem today. I was notified of the voicemail and I checked it. Erased the voicemail and the notification still remained. For the life of me i couldn't get it to go away. I tried to dismiss it like 20 times and nothing...finally I had to call my own phone from work leave a test voicemail and check it again. Erased it again and it went away.
---
2---
Try this:- phone>menu>options>services. You should see an array of listings including "Voice Mail and Text Messaging".
Highlight this and then >get settings.
You should have a number in the 'Text messages service center' box.
If you don't - it's a quick call to your provider.
---
Hope it can help you out!
Let me know if it doesn't.
Wondering, did you perform a hard reset to see if that fixes the problem?
Click to expand...
Click to collapse
On the O2 network you can change from Voicemail notification by SMS Text to the onscreen Spool / Tape icon by ringing the VM system on 901 and selecting the Mailbox Settings (option 4 I think) then selecting "onscreen notification" instead of "notification by Text" - option 3
Hope this helps.
ywilson said:
I had the same problem with the Voicemail notification and have found this somewhere in the internet. I have tried it and it works for me.
HKEY_Current_USER\System\State\Messages\vmail\Line1\Unread\Count
the value is more than 1
Change the DWord value from more than 1 to 0 and the problem just disappeared.
Try it and see if it works for you.
Good luck!
Click to expand...
Click to collapse
Great, it works for me too!
How does my phone know I have voicemail waiting?
Does the handset query the provider to check for new voicemail or does the provider send some sort of signal to the handset when I have voicemail waiting?
I currently have a problem with a large number of handsets on a business account with Orange which sometimes do not get notifications of voicemail for a number of days after the message is left.
If anyone can give me some detail on how the voicemail system works it would be much appreciated.
i'm not sure if this applies for you but my carrier (optus) here in australia sends an sms / text message informing me of voicemail. so say i missed a call or my phone was off (and someone tried contacting me), i receive an sms saying "number 0123456789 called but you were not able to answer. a voice mail was left. please call 321 to retrieve it."
cheers
A little guy is creeping through the air and lighting up a symbol in your phone - hahahaha
It's part of WM registry tracking for notifications
HKCU\System\State\Messages\TotalEmail\Unread\Count
HKCU\System\State\Messages\sms\Unread\Count
HKCU\System\State\Messages\mms\Unread\Count
HKCU\System\State\Phone\Missed Call Count
HKCU\System\State\Messages\vmail\Line1\Unread\Count
This info is basically pushed down to your phone by the provider changing a reg bit from 0 to 1. Sometimes, after you listened to your VM this bit is not cleared thus "dangling notifications" function in a lot of cleaners.
Hello, I have only had my touch pro a few days and when I try to access my voicemail I get to the part to enter my pin, then it tells me "first new message..." and then it hangs up. Is this a known issue? I tried searching the forum and in fact all of google, but nothing.
Any ideas?
I've had the same issue here in the Netherlands.
Disconnect when I called my own VM, also a disconnect when I tried to leave a message at a friend.
Both are in the TMobile network.
Just tried it again, but it workes ok now
solved
I figured it out for my phone. When I put my sim card in, the phone auto detects settings for sms, mms, data and voicemail. Here in Canada, providers have several different voicemail retrieval numbers and the phone autodetected the wrong one. I thought that since it did work at least somewhat, that the number was not the issue.
Contact your service provider and make sure your phone didn't choose the wrong retrieval number too
Hi,
I bought a T-Mobile HTC 8X in the US, unlocked it and brought it back with me to Israel. Now, when Israeli contacts call me, their numbers appear as (for example) 050 555 5555. When they text me, the number shows up as +97250 555 5555. For some reason the phone isn't able to tell that those two are the same number. I couldn't find anything while looking through the settings. I tried playing around with regions and all and came up with nothing. My old AT&T Focus had no issues and my dad's British 8S is working fine as well.
If I remember correctly, In WP7 deivces there's a registry setting which allows to control how many digits from the right identify the number as unique. However, I couldn't find a registry editor for the 8X (is there any?) so that information won't help me right now.
So now, my caller ID function sucks and the only way to actually ID contacts is to save 2 numbers for each one... really frustrating.
Does anyone know how to fix this?
Thanks!
Eyal
HTC support emailed back
And after sending them my IMEI they said that unfortunately there's nothing they can do and T-Mobile phones show that symptom in places like Israel and Europe.
So, it's either selling it on ebay or waiting for a registry editor or flashing it with a new ROM somehow. Option #1 seems like the most realistic one at the moment. This really sux.
Eyal
eyal453 said:
Hi,
I bought a T-Mobile HTC 8X in the US, unlocked it and brought it back with me to Israel. Now, when Israeli contacts call me, their numbers appear as (for example) 050 555 5555. When they text me, the number shows up as +97250 555 5555. For some reason the phone isn't able to tell that those two are the same number. I couldn't find anything while looking through the settings. I tried playing around with regions and all and came up with nothing. My old AT&T Focus had no issues and my dad's British 8S is working fine as well.
If I remember correctly, In WP7 deivces there's a registry setting which allows to control how many digits from the right identify the number as unique. However, I couldn't find a registry editor for the 8X (is there any?) so that information won't help me right now.
So now, my caller ID function sucks and the only way to actually ID contacts is to save 2 numbers for each one... really frustrating.
Does anyone know how to fix this?
Thanks!
Eyal
Click to expand...
Click to collapse
Actually, if I remember correctly from my previous experience with unlocked phones, most true Caller-ID (where the phone can identify who is calling even if they AREN'T in your Contacts list) requires XML code embedded in the phone (somewhere, don't ask me where) by the provider. Some providers use the same frameworks, so it's possible to get it working from network to network, but in most cases no.
I've never seen a situation tho, where it couldn't pick up the name from the Contacts list, based on the number coming in. I seem to remember you can turn on a feature called "International Dialing Help" that might bring them both together. OR put the entire phone number in your contacts. (As it is displayed when it comes in on Text).
drtolson said:
Actually, if I remember correctly from my previous experience with unlocked phones, most true Caller-ID (where the phone can identify who is calling even if they AREN'T in your Contacts list) requires XML code embedded in the phone (somewhere, don't ask me where) by the provider. Some providers use the same frameworks, so it's possible to get it working from network to network, but in most cases no.
I've never seen a situation tho, where it couldn't pick up the name from the Contacts list, based on the number coming in. I seem to remember you can turn on a feature called "International Dialing Help" that might bring them both together. OR put the entire phone number in your contacts. (As it is displayed when it comes in on Text).
Click to expand...
Click to collapse
I tried saving the entire number, but because local Israeli numbers get an extra "0" the phone is not able to ID them. Local call comes in as 050-5555555. SMS, like an intl. call, comes in as +97250-5555555. The "International Dialing Help" really helps when you're dialing. I thought it would fix the caller-id issue but it doesn't.
I spoke with HTC and with WP8 support on twitter. It's a known issue for T-mo phones and according to WP8 support, it has been forwarded to the appropriate team which probably means it'll be fixed in months to come. Until then, the only option is to get the phone flashed by one of the Israeli carriers with the Israeli version of the OS.
Hello,
I have just taken delivery of an HTC U11 6GB/128GB Dual SIM (all stock / not rooted) and find I am having issues with the HTC stock dialler and Voicemail setup. Basically on the stock dial pad I do not have the voicemail icon on key "1" so I cannot press key "1" to access my voicemail. I have checked under settings for voicemail and my provider and number are set correctly . I have installed a couple of other diallers from the Google Playstore and they have the key "1" voicemail shortcut that functions and dials Voicemail correctly. I have also tried with a couple of different provider SIMS and in all cases with the HTC Stock dialler no voicemail shortcut.
Can anyone offer and advise?
Many Thanks.
nialbracher said:
Hello,
I have just taken delivery of an HTC U11 6GB/128GB Dual SIM (all stock / not rooted) and find I am having issues with the HTC stock dialler and Voicemail setup. Basically on the stock dial pad I do not have the voicemail icon on key "1" so I cannot press key "1" to access my voicemail. I have checked under settings for voicemail and my provider and number are set correctly . I have installed a couple of other diallers from the Google Playstore and they have the key "1" voicemail shortcut that functions and dials Voicemail correctly. I have also tried with a couple of different provider SIMS and in all cases with the HTC Stock dialler no voicemail shortcut.
Can anyone offer and advise?
Many Thanks.
Click to expand...
Click to collapse
Same issue for me. Very strange!
Noticed that when you are actively in a call, however, the VM icon does appear above the 1 key when you click on the keyboard. Slightly pointless at that stage though!! Also no way to assign a speed dial to slot 1.
Probably something to raise with HTC directly?
Same for me. I tried to raise a case with them but for some reason the online form didn't seem to get through.
I will try again and send this link!
wazzaworld said:
Same for me. I tried to raise a case with them but for some reason the online form didn't seem to get through.
I will try again and send this link!
Click to expand...
Click to collapse
Under the "Call" settings tab does it say voicemail selected for "My Carrier"
wranglerray said:
Under the "Call" settings tab does it say voicemail selected for "My Carrier"
Click to expand...
Click to collapse
Just checked thanks. Yes, My Carrier is set. No other option.
I changed the voicemail number to one I have used on other phones but still no icon .
I managed to log a case with HTC so will post the reply....
nialbracher said:
Hello,
I have just taken delivery of an HTC U11 6GB/128GB Dual SIM (all stock / not rooted) and find I am having issues with the HTC stock dialler and Voicemail setup. Basically on the stock dial pad I do not have the voicemail icon on key "1" so I cannot press key "1" to access my voicemail. I have checked under settings for voicemail and my provider and number are set correctly . I have installed a couple of other diallers from the Google Playstore and they have the key "1" voicemail shortcut that functions and dials Voicemail correctly. I have also tried with a couple of different provider SIMS and in all cases with the HTC Stock dialler no voicemail shortcut.
Can anyone offer and advise?
Many Thanks.
Click to expand...
Click to collapse
It's on mine and it does indeed call my voicemail. US single sim on T-MOBILE.
Anon2016 said:
It's on mine and it does indeed call my voicemail. US single sim on T-MOBILE.
Click to expand...
Click to collapse
Likewise on my Sprint phone
Sent from my SM-T530NU using Tapatalk
Maybe it's just a problem with the phones bought direct from HTC or SIM-free? Mine came from HTC.
Had a reply as follows anyway, so fingers crossed for an update soon.....
We are sorry to hear that you are experiencing difficulties with HTC dialer of your HTC U11.
Thank you for informing us about issue with the voicemail icon and attaching the screen shot.
We have forwarded all data to our developers and expecting Phone app to be updated.
Please, for now use any third party dialer from Play Market.
Also, you can add the voice mail number as a contact and set speed dial for it.
Please accept our sincere apologies for the inconvenience you may have experienced.
Well, I have the U11+ with Oreo 8.0 and this issue is still there.
Maybe if you are back in touch with HTC you can mention this.
For now I'm just using speed dial 2 as my voicemail link.
Just installed the latest update 1.23.709.3 and this issue is still present.
Would be nice to see this fixed!
I was checking the information under the Phone Identity in Settings, and I noticed that under Slot 1 Phone Number, it is shown as, 'Unknown' !!!
Maybe this is the reason (bad coding) why the phone can't set up the voicemail dial feature when hard pressing 1 on the dial pad.
globalgpj said:
I was checking the information under the Phone Identity in Settings, and I noticed that under Slot 1 Phone Number, it is shown as, 'Unknown' !!!
Maybe this is the reason (bad coding) why the phone can't set up the voicemail dial feature when hard pressing 1 on the dial pad.
Click to expand...
Click to collapse
Nope. That isn't the reason. The same happens on my U11 64gb wwe and both my HTC m9's, one Dutch and one UK wwe. All phones show the phone number as "unknown". All phones have the voicemail on #1 speed dial for any carrier as normal.
It is the responsibility of the sim card to instruct the phone towards the correct carrier settings. It could be either the phone or the sim card.
Check the sim card in another device (must be network unlocked) and see if the problem occurs there, if so then the sim card is the problem.
If the test phone has the correct carrier settings and voicemail speed dial works as intended then the problem is the U11.
As for sprint and verizon, if those phones were issued by those carriers then the vmsd will work as the carriers preconfigure the device before shipping.
Have you checked both sim slots?.
Have you spoken with your carrier?.
It could well be that the problem is related to the dual sim feature.. More investigation needed i think..
Did HTC offer any fixes?
My wife just received an unlocked dual SIM U Play and we have the same issue. Carrier is set up. Voicemail number is correct. Voicemail icon does not appear against #1 on the dial pad unless a call is underway.
Press and hold #1 results in a request to select which slot (only 1 in use). Pressing slot 1 results in "Connection problem or invalid MMI code"
The only solution I found was to use speed dialing, and assign number 2 with the voicemail number.