topic Can't change voicemail number on Galaxy S7 edge in Android

Can't change voicemail number on Galaxy S7 edge

walcot — Mon, 05 Jun 2017 18:56:40 GMT

I want to change the number my Galaxy S7 edge diverts to on no answer after 30 seconds. If I type in **61*phonenumber*11*30#Send I get "Connection problem or invalid MMI code". I get the same error message if I try to check the status usung *#61#Send.

I've tried rebooting the phone but that doesn't help. I've tried using other MMI codes and I get the same message.

Anybody any ideas?

Re: Can't change voicemail number on Galaxy S7 edge

jonsie — Mon, 05 Jun 2017 19:04:40 GMT

@walcot wrote:
I want to change the number my Galaxy S7 edge diverts to on no answer after 30 seconds. If I type in **61*phonenumber*11*30#Send I get "Connection problem or invalid MMI code". I get the same error message if I try to check the status usung *#61#Send.
I've tried rebooting the phone but that doesn't help. I've tried using other MMI codes and I get the same message.
Anybody any ideas?

The phone number is the voicemail number which is 901

Re: Can't change voicemail number on Galaxy S7 edge

jonsie — Mon, 05 Jun 2017 19:05:58 GMT

**61*901*11*30#

Re: Can't change voicemail number on Galaxy S7 edge

walcot — Mon, 05 Jun 2017 19:14:18 GMT

Thanks but I want to change it to another number (a UK landline no.) by putting my landline number instead of 901. The problem is that I keep getting the invalid MMI code message (even if I use **61*901*11*30#)

Re: Can't change voicemail number on Galaxy S7 edge

MI5 — Mon, 05 Jun 2017 19:17:14 GMT

Have you got a network connection currently, ie. connected to o2 network?

Re: Can't change voicemail number on Galaxy S7 edge

jonsie — Mon, 05 Jun 2017 19:28:38 GMT

Ate you using +44 and dropping the zero on the mobile number?

Some help here with other code.

https://btbusiness.custhelp.com/app/answers/detail/a_id/12815/c/5193/

http://service.o2.co.uk/IQ/SRVS/CGI-BIN/WEBCGI.EXE?New,Kb=Companion,question=ref(User):str(Mobile),CASE=13448

Re: Can't change voicemail number on Galaxy S7 edge

walcot — Mon, 05 Jun 2017 19:24:53 GMT

Yes, I've got a strong 4G signal

Re: Can't change voicemail number on Galaxy S7 edge

MI5 — Mon, 05 Jun 2017 19:27:50 GMT

Possibly all MMI codes have been disabled then for security purposes - the stagefright vulnerability fix turned off some of them previously.
Try setting from the call forwarding settings in the phone's setting menu.

Re: Can't change voicemail number on Galaxy S7 edge

walcot — Mon, 05 Jun 2017 19:29:49 GMT

Yes, I am using +44 xxxx xxxxxx without the 0, however the problem isn't the number I'm trying to divert to - the problem is that the MMI codes are invalid.

If I try anything with MMI codes such as * # 61 # SEND or * # 21 # SEND to check the status I always get the same message "Connection problem or invalid MMI code". It's not a connection issue as I have a good signal & everything else on my phone works OK so it must be a problem with the MMI codes

Re: Can't change voicemail number on Galaxy S7 edge

jonsie — Mon, 05 Jun 2017 19:33:46 GMT

Stab in the dark.... are you on monthly contract as payandgo isn't supported?

Re: Can't change voicemail number on Galaxy S7 edge

MI5 — Mon, 05 Jun 2017 19:35:19 GMT

Try adding a comma to the end of the code, ie. *#61#, send

Re: Can't change voicemail number on Galaxy S7 edge

walcot — Mon, 05 Jun 2017 19:39:18 GMT

yes I have an O2 business monthly contract.

Re: Can't change voicemail number on Galaxy S7 edge

walcot — Mon, 05 Jun 2017 19:58:10 GMT

No, sorry, same problem.

Incidentally, with all the codes I've tried, when I press send I initially get a message "MMI code started" but then the error message

Re: Can't change voicemail number on Galaxy S7 edge

MI5 — Mon, 05 Jun 2017 20:02:35 GMT

Codes must be disabled in the firmware.
Did you try from the phone's settings menu?

Re: Can't change voicemail number on Galaxy S7 edge

madasaf1sh — Mon, 05 Jun 2017 20:05:34 GMT

Have you done a ##61# to degregister the current services

Then do a full status check on *#61#

Then reissue the command *61*+441142xxxxxx#

I have tested this with my 2 android handsets and my iphone and diverted calls to my BT Mobile and SfB landline successfully using the MMI/USSD codes.

Also reboot your handset.

Re: Can't change voicemail number on Galaxy S7 edge

walcot — Mon, 05 Jun 2017 20:21:07 GMT

I can't find anything in the settings menu about enabling/disabling MMI codes

Re: Can't change voicemail number on Galaxy S7 edge

walcot — Mon, 05 Jun 2017 20:24:11 GMT

Tried all of those & still get '.....invalid MMI code' every time including ##61#. Have rebooted several times to no avail

Re: Can't change voicemail number on Galaxy S7 edge

MI5 — Mon, 05 Jun 2017 20:26:43 GMT

@walcot wrote:
I can't find anything in the settings menu about enabling/disabling MMI codes

No, I mean call forwarding settings.

Re: Can't change voicemail number on Galaxy S7 edge

walcot — Mon, 05 Jun 2017 20:37:30 GMT

Going out now but will check tomorrow & report back. Thanks to all for suggestions!

Re: Can't change voicemail number on Galaxy S7 edge

jonsie — Mon, 05 Jun 2017 20:50:45 GMT

Try ##002# and see what message you get.