One thing that keeps bugging me is changing the voicemail number. It recognizes my network as O2-UK though I am on 'giffgaff' a Virtual Network under O2 but my phone also has the voicemail number set as 901 (O2's number).
If I try to change it in Settings > Call settings, I get the error message 'Call settings error' Voicemail number change unsuccessful. Please contact your operator if this problem pesists.
Tried power cycling, can't even get Google Voice to work, won't verify the number.
HTC Legend - Cyanogen Mod 7.1.0
I am having trouble changing the voicemail number on my Galaxy S2. At present pressing the voicemail speeddail does nothing other then prompting me to add my voicemail number and directs me to the settings app.
If I try to change it in Settings > Call settings, I get the error message 'Voice Mail Number change unsuccesful'. But no real reason why it happens and its annoying me greatly as I can't clear my voicemail counter without it and what not >_<
Tried power cycling and what not and neither of it has helped, so has anyone of you gotten any idea as to how I can add it to my phone or fix that stupid error. Any help or advice short of doing a full reset is more then welcome, and I do hope someone might be able to help me....
Thanks in advance.
There is a copy of your voice mailbox number on the sim card that may conflict with what you are trying to do.
Talk to your provider, they can flush your mailbox and allow you to reset the number.
How can they flush my sim card, or am I reading your comment wrong?.
Just for clarifying I changed provider on my phone and I am unsure wether the error happened during that change since I can't remember fiddling with the voicemail bit before the last couple of days and running into that error.
they can flush the settings for your voicemail on their server which will allow you to make changes to your voice mail account.
Well they tried something which advertantly didn't work >_<. But apparently the voicemail number isn't even on my simcard.
They tried even more stuff >_<.
And when I press and hold #1 on my phone it says there isnt a voicemail number on my sim. But trying to change it through settings it still says "Voicemail Number changed unsuccesful"
I have the same problem. Did you find a solution?
At the moment I have limited the issue to being operator dependant. Because I have the issue on one sim from my regular provider, while trying two other providers simcards doesnt cause this error.
Next on list is to try another simcard and then go digging in the phone to see what might be causing it. But I will be pinging you if I find the solution.
dnesdlrow, where are you from and what provider do you use?.
I've got the same problem. I flashed to a custom & now there is no voicemail number on my SIM card.
I called customer service and the gave me a 10 digit number to plug in. They said the number is different for everyone so if anyone else has the same trouble you can simply call your carrier.
You need to put in your carriers specific voice mail number. For example I am on O2 UK and mine is 901.
Use google of contact your carrier for the number.
jamespaulritter said:
I've got the same problem. I flashed to a custom & now there is no voicemail number on my SIM card.
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Hello,
I had a similar issue. I changed the plan on my phone, and afterward the voicemail didn't work when I did a long press on the #1 button. It kept saying that there was no voicemail number, and when I tried to enter it into the settings manually it kept saying "Voicemail number change unsuccessful."
I called Rogers and they gave me a new voicemail number; I could dial it and set up my voicemail, but when I tried to program it into the dedicated #1 speed dial spot, I still could not change it. I tried copying it to my SIM card and adding it as a contact to select for the speed dial slot, but that didn't work either. I suspected that this new number was conflicting with the SIM card, so I went to Rogers and asked for a new one. Despite some resistance, they gave it a shot, and it worked perfectly thereafter. Just be sure to copy your contacts over to your phone before getting a new SIM!
I hope this solution works for others too!
Cheers and good luck!
Help please ...
I too am trying to set my voicemail for the speed dial "1" key.
while at the keypad screen:-
menu-> call setting -> scroll to the heading "voicemail", option "voicemal service", is set default to "my carrier".
I then choose to change the "voicemail settings" -> "voicemail number", and enter the new voicemail number to dial, press ok .... and this is where the problem is...
When I press OK ... I get the following error "Voicemail number change unsuccessful"
I would like to to have this number changed , as every time manually dial my voicemail number it constantly ask for my password.
Why is this happening, I have purchased this phone outright, it is model type i9300, running Android 4.1.2.
Hopefully this can be an easy fix...?
PS...
This also causes a problem with Australian virtual mobile carriers, like Amaysim, Kogan, Aldi, who use Telstra & Optus as there underlying carriers, and and also will cause issues when travelling abroad, because you will not be able to access your voicemail if the number can not be changed to the full international dialing equivalent..
Also Can't Change the Voicemail number
I'm running a non-rooted, GS3 from VZW. Running 4.1.2.
The current voicemail number is *86 (Verizon's). I'd like to change it because I'm abroad and *86 is not my carrier's voicemail number. Every time I go to Phone, Call Settings, Voicemail Settings, and edit the number to the local one, I get "Error: Voicemail number change unsuccesful."
Any suggestions on how to fix this?
Same problem still
I'm on an S4 Mini with cm11 m6 and habe the same problem with a German T-Mobile card. I can easily dial the number 3311. Why can't I simply assign that to the #1 key?
Hi,
I recently updated my sister's S2 (Virgin Mobile) to ICS using Samsung Kies recently and she notices and showed me this odd problem. It is showing a MMI error if she uses a speed dial and it did not do this prior to the update which had Gingerbread initially.
For instance, if she presses 2 on dial pad, then dial, it gives the error. If she holds 2 on the dial pad, it speeds dial normally.
Is there something which needs to be adjusted to remedy this?
Thanks
Try this
Try removing the speed dial then try to re-add them. I had a friend with this problem and this solved it. I would recommend trying it with one first, though, if it doesn't work for you than that's alot of work for nothing!
I have a samsung gs4 and i cant call my voicemaill *86 It tells me invalid mmi code Other times I get the operator telling me the number I called is invalid. I also have a few apps that can start from the dialer that no longer start because of the above errors. I am rooted and running stock verizon firmware. My network operator is Telcel in Mexico.
I have to say it is not Telcel's fault since I can't use my dialer to run gallery vault either. The pin for that app starts with a ##1234 i.e. ## (then 4 digit pin )
I can make and receive calls no problem.
This problem started around 3 months ago, nothing was changed in android's settings or any app that have administrator privledges. I noticed this because I received a notification regarding a voicemail I received and wasn't able to check it.
( I don't get many v.m. )
I can call customer ( *264 ) service but only by prefixing a ( # ) i.e. I have to dial #*264 in order for the call to go through.
If I dial *264 as per Telcel's official c.s. number, I get the invalid code or mmi number error.
As per launching the gallery vault app via dialer, I have no luck with prefixing the "#" as with the c.s. number, since the launch code already starts with 2 "#" 's. I.e. ( ###1234 ) doesn't launch app.
I have an issue with Call forwarding issue with T-MO V10 Unlocked on ATT Network.
I went ahead and follow the steps where it was posted on ATT website,
Go to Settings->Calls->Call Forwarding
Select Always Forward and enter Tel#.
When I did that, I get "Call settings error - Unexpected response from network."
So, I tried *21*TelNumber#, then I get "Call Forwarding - Connection problem or Invalid MMI Code."
AND I also tried **21*TelNumber#, same error message, "Call Forwarding - Connection problem or Invalid MMI Code."
Is anyone having an issue like this setting up as far as setting up Call forwarding on ATT network with T-MO Unlocked V10???
Thanks in advance!