CellC WiFi calling not working?

[shifttymike]

Hello

I am currently out of SA and probably won't be back before next year given the way that things are going. Myself and my wife are on CellC and have been using WiFi calling since we got here, but it seems to have stopped working around the beginning of March.

I've been using my device (iPhone X) as it's supported, but it won't register on the network anymore. I captured the network traffic from my phone and it looks like the IPsec tunnel negotiation fails for some reason (server sends back INVALID_IKE_SPI and terminates the connection).

- I've contacted CellC and they say that WiFi calling should work (no issues they know of)
- The sim cards are still valid (last chargeable call was made late Feb, confirmed by call center consultant)
- I've tried with various VPNs in case it was a network issue, both one in South Africa (Nord) and one in Germany (private VPN, this one worked before with WiFi calling) with no luck. Running on the router, so wifi traffic was forced through the VPNs

While we both would like to use WiFi calling, another issue is that our sim cards will expire at the end of May and we'll lose our numbers if this isn't resolved. The interim plan will be to upgrade to some cheap contract, but ideally I'd like to get this sorted. As usual, it's really difficult to talk to someone who knows what IPsec is, why it's part of WiFi calling, and how to look at a pcap file so I'm reaching out here.

If anyone from CellC (or anywhere else really) is able to help, let me know and I can send you the capture or help with debugging. I'd be really happy if this could be resolved! TIA

 

[Cell_C]

Hello Michael

May you please us your query + your Cell C and contact number?

We will get our Technical Team to look into it.

^NS

 

[Mynard]

Did you get this resolved?

I’m having the exact same issue while in the USA.

M

 

[shifttymike]

Did you get this resolved?

I’m having the exact same issue while in the USA.

M

I did! A bit of back and forth in dms with @Cell_C and eventually someone managed to call me on my overseas number. He established that the service had been de-provisioned for my number for some reason, switched it back on and I’m still using it till this day. Unfortunately I don’t have his details anymore but escalating via @Cell_C ultimately did the trick.

 

[shifttymike]

So basically send them a dm like they requested from me with your CellC number and US number and ask them to Provision WiFi calling.

 

[Rickster]

Also note that VoWi-FI can be blocked on a firewall.

 

[Mirai]

Hello Michael

May you please us your query + your Cell C and contact number?

We will get our Technical Team to look into it.

^NS

I'm sorry to nitpick and it's not personal but "may you please" is grammatically incorrect. You should say, may I, but for other people you should rather say, could you please, or would you please. May implies you're asking for permission and obviously you would not request something and ask someone for permission to do it at the same time.

Is "May You Please Explain This" Grammatically Correct? Explained For Beginners

When it comes to being polite in English, there seem to be a lot of rules that contradict one another. In this article, we’ll look at using “may you please” and whether it’s correct to do so. While it might seem polite, there are better options. Is It Grammatically Correct To Use “May You...

grammarhow.com

I hear so many people make this mistake, may you please. Is this taught in schools these days?

 

[shifttymike]

I'm sorry to nitpick and it's not personal but <snip>

Thanks for explaining all of that, super helpful. I'm sure Grammarly has a forum where you can continue to spread the good word instead of singling out a message from more than 2 years ago on a tech forum.

 

[JuliusSeizure]

Have you sorted this issue?

So, I am also abroad and using Wifi calling (mainly for SMS) and noticed that it only works for a few minutes before going off. I have to restart my phone to get it to work again and it does for a few minutes before again going off.

Is this a common issue or perhaps something with my phone?

 

[Cell_C]

Have you sorted this issue?

So, I am also abroad and using Wifi calling (mainly for SMS) and noticed that it only works for a few minutes before going off. I have to restart my phone to get it to work again and it does for a few minutes before again going off.

Is this a common issue or perhaps something with my phone?

Dear JuliusSeizure,

Thank you for contacting Cell C.

Please send us an email to [email protected] of your Cell C numbers in question and a contact number where we can get hold of you to further assist.

Regards
^TM

 

[gopher22]

I am also struggling to get Wifi Calling to work.

• I have a Samsung A33 which is wifi calling compatible.
• I had to upgrade my sim card before the menu item became available on the phone to turn wifi calling on or off. It is now available and toggled on. Took six months before someone suggested this might be the issue
• I have been through the USSD menu (*147# > My Account > Info > settings > Wifi Calling) and activated/deactivated wifi calling multiple times – receive the setting change confirmation SMSs but no change on the device with respect to WiFi calling
• On the Cell C app under services WiFi calling is toggled off and when I try to toggle it on it says it was not possible and prompts me to call 135
• Most calls to the service desk take at least 30m with an agent trying to talk me through various generic settings and refusing to escalate, before we inevitably get cut off. On the few occasions it has been escalated the solutions suggested are weird things like turning off roaming and manually connecting to the cell c network, phone restarts, etc.
• Most recent solution suggested was that I had to deactivate international calling. This has been done and WiFi Calling deactivated and reactivated, phone restarted, but still not working.

Any advice would be appreciated.

 

[Cell_C]

I am also struggling to get Wifi Calling to work.

• I have a Samsung A33 which is wifi calling compatible.
• I had to upgrade my sim card before the menu item became available on the phone to turn wifi calling on or off. It is now available and toggled on. Took six months before someone suggested this might be the issue
• I have been through the USSD menu (*147# > My Account > Info > settings > Wifi Calling) and activated/deactivated wifi calling multiple times – receive the setting change confirmation SMSs but no change on the device with respect to WiFi calling
• On the Cell C app under services WiFi calling is toggled off and when I try to toggle it on it says it was not possible and prompts me to call 135
• Most calls to the service desk take at least 30m with an agent trying to talk me through various generic settings and refusing to escalate, before we inevitably get cut off. On the few occasions it has been escalated the solutions suggested are weird things like turning off roaming and manually connecting to the cell c network, phone restarts, etc.
• Most recent solution suggested was that I had to deactivate international calling. This has been done and WiFi Calling deactivated and reactivated, phone restarted, but still not working.

Any advice would be appreciated.

Good day

Thank you for reaching out to us. Please PM us the number in question and we'll assist.

Cell C | PN