P20 call barring (block all incomming calls) can't be turned off - Huawei P20 Questions & Answers

I set to block all incoming calls in Call barring and now if try to turn it off I can't. I input code 0000 and the slider shows that it is off but if I go out from this menue and go back it it is on again. I tried with #330*0000# but I got error invalid MMI code.. What to do?

I inserted SIM in to another phone and there disable call barring and it worked...

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Call Forwarding DTMF - T-mobile UK

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I'd like to use speed dial to dial a DTMF from my Hermes that will turn call waiting on and off, but I don't know what the correct code is?
I've tried *20# but I get a unsupported error back.
Thanks
Anyone..........?

wird noise..must chek

i have a 8125 after i call or text message a weird sounds pop up and my balance is displayed.. is there any way to turn this voice off..even though my phone is on silent it still give me that sound
it's very likely an operator setting, so try calling them. on mine i had a four digit number to enable eg 1234 and another to disable eg 4321.
i think dat there is a registry hack to disablle this sound do u no of that

incoming call country code problem

Hi,
When i receive incoming call, the number goes (XXX)XXX-XX, it appears like that for every number and it is wrong becuase it is not the country code but the first 3 digit of the caller's number. how to i enable back country code display?
thats because your phone is formatted to receive american format numbers...
Hi are there any possible tweaks for me to do so to rectify this problem please ?

[Q] How to disable *90 call forwarding?

Hello I'm in Thailand and I have a True SIM card. To refill my credits, I'm required to dial a number starting with *90. But I'm unable to do this because it just brings up the call forwarding feature and so I'm unable to dial this number since the popup dialog interrupts the call. How can I disable *90?

Z5P unable to call or recieve call

I just bought z5p dual SIM, but I only use 1 SIM, and I have a problem, I can't call or receive call, it won't even ring or show miss call, and when I call other people, it automatically cut off immediately after I call, The people won't receive that call either. Other than call & receive call, everything worked normal, I can use that SIM card to SMS & go internet, just can't call. But when I put that SIM card onto other phone, it can call. It definitely the phone's problem but I don't know whats wrong. I tried to go thru the SIM card & call setting on the phone, some settings like 'call barring' & 'additional settings' , when I click those settings it shows an error "Network or SIM card error". Did anyone know how to fix this? Thx.

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