Singtel Wifi calling

[loganrunning]

Still cannot figure out why my SIngtel WIFI Calling isn't working...

what phone r u using?

 

[Asus80]

Thanks for the info. I find out it is the same for M1 and Starhub. That should cover Maxx and Eight as well. So looks like only SIMBA will have working VoWiFi overseas.

1. Singtel FAQ on WiFi Calling.
https://www.singtel.com/personal/i/faq/wifi-calling

Where can I use this service?
You can use this service over any local WiFi connection. Use of this service at a WiFi hotspot overseas is currently not supported.

2. M1 WiFi Calling FAQ
https://www.m1.com.sg/support/faq/wifi-calling-faq

Is there a specific Wi-Fi network that I must connect to use the service?
You can connect to any local Wi-Fi network to use this service.

3. Starhub WiFi Calling FAQ
https://www.starhub.com/personal/support/article.html?id=HsEeq0QqFNAaH1lOAzrpsA

When I be able to make calls on VoWIFI when I am Roaming Overseas?
No, calls made while roaming will be made through VoLTE or 3G.

M1 maxx support WiFi Calling
Eight support WiFi Calling

 

[froztheart]

what phone r u using?

iPhone.

 

[froztheart]

For local connection? It is working for me with my Poco X7 Pro and Singtel SIM Only plan.

You may want to set to prefer WiFi network than mobile network. If not difficult to fall back to WiFi Calling.

On my iPhone which it used to work and haven't been working for a while.
Device end have already toggled the necessary etc., but not sure if router has any settings that might be blocking this.

Now that I recall, I shall check my Singtel on the Androids that I have whether it's reflecting VoWIFI.

 

[xiaofan]

Thanks for the info. I find out it is the same for M1 and Starhub. That should cover Maxx and Eight as well. So looks like only SIMBA will have working VoWiFi overseas.

1. Singtel FAQ on WiFi Calling.
https://www.singtel.com/personal/i/faq/wifi-calling

Where can I use this service?
You can use this service over any local WiFi connection. Use of this service at a WiFi hotspot overseas is currently not supported.

2. M1 WiFi Calling FAQ
https://www.m1.com.sg/support/faq/wifi-calling-faq

Is there a specific Wi-Fi network that I must connect to use the service?
You can connect to any local Wi-Fi network to use this service.

3. Starhub WiFi Calling FAQ
https://www.starhub.com/personal/support/article.html?id=HsEeq0QqFNAaH1lOAzrpsA

When I be able to make calls on VoWIFI when I am Roaming Overseas?
No, calls made while roaming will be made through VoLTE or 3G.

M1 maxx support WiFi Calling
Eight support WiFi Calling

Take note we are talking about WiFi Calling when roaming overseas.

Does M1 Maxx and Eight support WiFi calling during roaming overseas?

 

[A7997A]

it may be the phone eg:
nothing phone 2 with different SIM cards:
- Gomo: works
- eight: does not work
- Simba: works

same SIM cards in 1+12, then 1+13, and 1+13R:
- Gomo: dunno, already ported out.
- eight: works
- Simba: works.

VoLTE works for all SIM on both phones.
Set to "Prefer VoWiFi"

just my limited experience

edit1: to try and force VoWiFI, turned on aeroplane mode, then turned on wifi (data off). No change.
edit2: all phones were NOT telco phones
edit3: by " it may be the phone" i mean, whether the telco supports it for VoWiFi

Does VoLTE works when VoWifi doesn't ? What I have read is both requires IMS profile for the telco to be included in the phone firmware, otherwise that won't work. So it seems like the Nothing Phone 2 is lacking starhub IMS profile, or at least incomplete.

 

[loganrunning]

iPhone.

strange. all my friends using iphone on singtel network report no problems.
maybe time to call singtel customer service

 

[froztheart]

strange. all my friends using iphone on singtel network report no problems.
maybe time to call singtel customer service

Yes, I might be calling SIngtel for clarification.
Separately, not sure if anyone have tested/noticed any settings on router that might be blocking/causing the VoWIFI to not be up.

 

[loganrunning]

Yes, I might be calling SIngtel for clarification.
Separately, not sure if anyone have tested/noticed any settings on router that might be blocking/causing the VoWIFI to not be up.

no changes in my router settings across the 3 sims * 3+ phones.
I guess it's some config that is not pushed out, or their backend "recognises" some code or lack of.

 

[A7997A]

Yes, I might be calling SIngtel for clarification.
Separately, not sure if anyone have tested/noticed any settings on router that might be blocking/causing the VoWIFI to not be up.

VoWifi requires port UDP 500/4500 to the provider's respective mobile gateway.
MVNO shares the MNO's gateway.
Check for IKE/IPSec, pass through settings etc.

 

[froztheart]

VoWifi requires port UDP 500/4500 to the provider's respective mobile gateway.
MVNO shares the MNO's gateway.
Check for IKE/IPSec, pass through settings etc.

Sorry, don't quite get you.
I should be checking for IKE/IPSec, pass through setting in my router?

 

[A7997A]

Sorry, don't quite get you.
I should be checking for IKE/IPSec, pass through setting in my router?

Yes. But normally if other provider's VoWifi works, then the chance of a router setting is very low, as the only difference is the destination FQDN/IP address. Only on proper firewall do you see that level of granularity.

Also try on other local wifi networks and see if it works. If it works it is probably the router, if it doesn't probably not.

 

[loganrunning]

VoWifi requires port UDP 500/4500 to the provider's respective mobile gateway.
MVNO shares the MNO's gateway.
Check for IKE/IPSec, pass through settings etc.

i didn't change any settings on my router.

on eight:
- VoWifi didn't work on my np2
- it worked for Singtel/Gomo and Simba.

does that imply that my router settings are ok, and that it's eight back end that does not support np2?

 

[A7997A]

i didn't change any settings on my router.

on eight:
- VoWifi didn't work on my np2
- it worked for Singtel/Gomo and Simba.

does that imply that my router settings are ok, and that it's eight back end that does not support np2?

Unlikely to be the router, unless there is something really strange.

It is possible eight whitelist phones but not likely. More likely is np2 doesnt support eight/starhub. The phone needs the code for each provider.

 

[froztheart]

On my iPhone which it used to work and haven't been working for a while.
Device end have already toggled the necessary etc., but not sure if router has any settings that might be blocking this.

Now that I recall, I shall check my Singtel on the Androids that I have whether it's reflecting VoWIFI.

Anyways, seems like all Singtel SIMs whether Android or IOS for me does not reflect VoWIFI now...

 

[loganrunning]

Anyways, seems like all Singtel SIMs whether Android or IOS for me does not reflect VoWIFI now...

i can't comment on ios, but for Android, my observation is they support the main models from the main brands.

niche models, or niche brands, may or may not get telco support. if get, it's your lucky day, go and buy 4D.

 

[froztheart]

i can't comment on ios, but for Android, my observation is they support the main models from the main brands.

niche models, or niche brands, may or may not get telco support. if get, it's your lucky day, go and buy 4D.

It used to work IIRC for my POCOs too but didn't observe/track when it "stopped" working.
POCO is technically XM so not that niche compared to the likes of say Redmagic kind of brands at least I believe.

 

[xiaofan]

It used to work IIRC for my POCOs too but didn't observe/track when it "stopped" working.
POCO is technically XM so not that niche compared to the likes of say Redmagic kind of brands at least I believe.

Just tested using VoWiFi and there is no issue for my Singtel SIM Only pan and Poco X7 Pro.

Tested with calling my Eight Mobile number.

 

[xiaofan]

BTW, in the above test, I turned of M1 Maxx 5G to make sure that Singtel WiFi calling works.

After I enabled M1 Maxx, I can see both SIM Cards support VoWiFi.

Edit to add -- somehow this is not so consistent, often the second SIM does not show VoWiFi icon. With one SIM then it is very consistent that VoWiFi works fine.

 

[froztheart]

Just tested using VoWiFi and there is no issues for my Singtel SIM Only pan and Poco X7 Pro.

Tested with calling my Eight Mobile number.

Yes, which means what I recalled is correct then.
Not sure why and when did VoWIFI not work for mine.