topic Re: mmi error in Android

mmi error

granpaof2 — Mon, 25 Feb 2019 14:15:26 GMT

Hi,

I have a ZTE Blade A520 and I am trying to extend the ringtone length, I have the code but when I try it, I get an error "call forwarding, connection problem or invalid MMI code.

If I switch off voicemail, the ringtone plays until I answer. With voicemail on, the rintone is limited to approx. 15 seconds before going to VM.

Any help would be appreciated.

Thanks, Gramps

Re: mmi error

MI5 — Mon, 25 Feb 2019 14:23:13 GMT

@granpaof2 You'll need to diable wifi calling by asking customer services first before these codes will work.

http://www.o2.co.uk/contactus

Re: mmi error

Orchid83 — Mon, 25 Feb 2019 19:50:04 GMT

Hi MI5,

I've been reading a few of your replies to different posts wih interest. And I think you may be able to help where O2 has been quite frankly useless.

I have a Google Pixel 3 and trying to set up wifi calling. They asked me to dial *#1234# and it came back with the following error 'connection prolem or invalid MMI code'.

I took the contract out at carphone and they're saying that's the reason why.

Would you have any ideas? If not, I'm going to have to complain to carphone for misselling.

Thanks!

Re: mmi error

MI5 — Mon, 25 Feb 2019 20:16:22 GMT

Invalid MMI codes are purely because you have WiFi calling enabled on your account. They turn it on for everyone wether you need it or not and it screws up the network commands.
Only customer service can turn it off for you as they have bizarrely removed that option for users in MyO2!

Re: mmi error

Orchid83 — Mon, 25 Feb 2019 20:19:25 GMT

Thanks! I've only just had it turned on as I need to use wifi calling because suffering with poor signal for probably at least the last couple of years.

Do you think if I changed the CSC the WiFi calling would work?

Re: mmi error

Cleoriff — Mon, 25 Feb 2019 20:21:57 GMT

@MI5

Are you saying that the customer can't turn off Wifi calling themselves now?

If so, why on earth is that? Surely it saves CS a lot of work?!

Re: mmi error

MI5 — Mon, 25 Feb 2019 21:32:38 GMT

@Orchid83 wrote:
Thanks! I've only just had it turned on as I need to use wifi calling because suffering with poor signal for probably at least the last couple of years.

Do you think if I changed the CSC the WiFi calling would work?

No, it won't make the slightest bit of difference.

You can have it turned on again afterwards if you want to though.

Re: mmi error

MI5 — Mon, 25 Feb 2019 21:33:24 GMT

@Cleoriff wrote:
@MI5
Are you saying that the customer can't turn off Wifi calling themselves now?
If so, why on earth is that? Surely it saves CS a lot of work?!

That's what I'm saying, yes.

Re: mmi error

granpaof2 — Sat, 02 Mar 2019 12:24:24 GMT

Hi MI5,

Thanks for your help and apologies for not replying sooner. I have contacted CS and they are going to disable WC (no pun intended) for me. They did ask if I could do it on my device though??

I will let you know if it works.

Regards,

Gramps

Re: mmi error

MI5 — Sat, 02 Mar 2019 12:28:45 GMT

Thanks for letting us know mate.

Re: mmi error

granpaof2 — Tue, 05 Mar 2019 09:16:45 GMT

Hello MI5,

Just to let you know, your suggestion works, I now have a decent ringtone time.

Thanks again,

Grampo

Re: mmi error

MI5 — Tue, 05 Mar 2019 09:25:27 GMT

Good to hear that

Re: mmi error

Kent51 — Sat, 10 Sep 2022 18:07:29 GMT

How do I contact a human being at O2? I can only find the Chat thing and it says it doesn't understand the problem!

Re: mmi error

MI5 — Sat, 10 Sep 2022 18:12:10 GMT

@Kent51

https://www.o2.co.uk/contactus

Re: mmi error

Kent51 — Sat, 10 Sep 2022 18:34:45 GMT

Thanks, that's where I've been looking. There is no phone number listed. Only chat or a postal address!

Re: mmi error

MI5 — Sat, 10 Sep 2022 18:55:35 GMT