Singtel Wifi calling

[loganrunning]

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 a guess.... i suspect that the telcos may drop support for older models after a while.
my old 1+9 was supported on Gomo initially, then it dropped off (also didn't take note when, just noticed it unsupported one random day).

can't test it now as i've sold the phone.
(IIRC, 1+, at least the pre-2020 models, are considered less mainstream, maybe niche to some telcos. Nothing Phone 1 & 2 are niche)

edit: Simba up to early 2024, had a long list of supported phones. by end 2024/early 2025, that list was drastically trimmed, and IMS didn't register on such dropped models, even though VoLTE was listed as available.

 

[xiaofan]

Other findings.

1) My Poco X7 Pro does not support VoNR, no matter for Singtel SIM Only 5G SA or M1 Maxx 5G SA. Both will use VoLTE by default.

2) If I turn on VoWiFi and set the SIM card to prefer WiFi, then both Singtel SIM Only plan and M1 Maxx plan will work with 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.

I observed this recently on a dual maxx sim. The 2nd sim keeps dropping off wifi calling

Same findings from A7997A about WiFi Calling (VoWiFi) on dual SIM phones. The second SIM keeps dropping off WiFi Calling.

 

[froztheart]

Just a guess.... i suspect that the telcos may drop support for older models after a while.
my old 1+9 was supported on Gomo initially, then it dropped off (also didn't take note when, just noticed it unsupported one random day).

can't test it now as i've sold the phone.
(IIRC, 1+, at least the pre-2020 models, are considered less mainstream, maybe niche to some telcos. Nothing Phone 1 & 2 are niche)

edit: Simba up to early 2024, had a long list of supported phones. by end 2024/early 2025, that list was drastically trimmed, and IMS didn't register on such dropped models, even though VoLTE was listed as available.

This makes sense but for the devices are all post-covid devices which should still be considered new still there's still OS supports provided.
Old/outdated to me is when OS support is stopped, so that's at least 3 years for the current standards.

 

[loganrunning]

This makes sense but for the devices are all post-covid devices which should still be considered new still there's still OS supports provided.
Old/outdated to me is when OS support is stopped, so that's at least 3 years for the current standards.

telcos will need to extend the support window as phone manufacturer update windows expand.
also, it would be good if telcos would support 3rd party OS which extend the life of the phones (keep them out of the land fill). eg LineageOS (just to name one) or others.

 

[xiaofan]

This makes sense but for the devices are all post-covid devices which should still be considered new still there's still OS supports provided.
Old/outdated to me is when OS support is stopped, so that's at least 3 years for the current standards.

Basic service including VoLTE -- should be yes, not reasonable to drop the support of phones for basic service like voice call using VoLTE, even if the phone is out of security updates.

VoWiFi --> no, they may not support the not so poular models, as this may not be seen as essential.

 

[froztheart]

telcos will need to extend the support window as phone manufacturer update windows expand.
also, it would be good if telcos would support 3rd party OS which extend the life of the phones (keep them out of the land fill). eg LineageOS (just to name one) or others.

Yes and agreed but likely doesn't seem to be the case for now.
Supporting main OS also lazy liao, 3rd party can forget it. Otherwise, how to meet sales KPI.

 

[froztheart]

Basic service including VoLTE -- should be yes, not reasonable to drop the support of phones for basic service like voice call using VoLTE, even if the phone is out of security updates.

VoWiFi --> no, they may not support the not so poular models, as this may not be seen as essential.

I disagree that VoWIFI is not essential, it's been useful especially in SG's context with high FBB availability due to population density.
Not all places have mobile cell connectivity so having this definitely helps.

 

[loganrunning]

Yes and agreed but likely doesn't seem to be the case for now.
Supporting main OS also lazy liao, 3rd party can forget it. Otherwise, how to meet sales KPI.

yeah, i can hope, rite?

i still remember my unpleasant experience at simba orchard customer disservice centre, after they removed VoLTE suport for my 1+9. their rude solution? buy a new phone from them. pui!
ended up using a VoiP solution that keeps my older phones out of the landfill, instead of helping simba profits.

 

[loganrunning]

I disagreed that VoWIFI is not essential, it's been useful especially in SG's context with high FBB availability due to population density.
Not all places have mobile cell connectivity so having this definitely helps.

like those in residences on very high floors.

 

[froztheart]

yeah, i can hope, rite?

i still remember my unpleasant experience at simba orchard customer disservice centre, after they removed VoLTE suport for my 1+9. their rude solution? buy a new phone from them. pui!
ended up using a VoiP solution that keeps my older phones out of the landfill, instead of helping simba profits.

Defintely can!

Not only SIMBA one la, all same one.
Companies is about profit nia, what CSR like going green campaigns etc. is only for optics and reputation.

 

[froztheart]

like those in residences on very high floors.

Yes, especially as our HDBs etc. all going higher and higher to maximise population density in SG.
Cramp like f in Singapore now.

 

[loganrunning]

Defintely can!

Not only SIMBA one la, all same one.
Companies is about profit nia, what CSR like going green campaigns etc. is for optics and reputation.

oh, i agree. just citing a personal example.

to cite a very ungreen (and customer lock-in) telco, they only supported VoLTE on phones which they sell in their store. this is a very sneaky way to do telco lock-in, which is supposed to be forbidden under imda rules.

 

[loganrunning]

Yes, especially as our HDBs etc. all going higher and higher to maximise population density in SG.
Cramp like f in Singapore now.

hahahaha didn't want to say "HDB" but yeah, my friend staying 2nd or 3rd top floor in ghim moh. nice view, lousy reception. first world problem.

 

[froztheart]

oh, i agree. just citing a personal example.

to cite a very ungreen (and customer lock-in) telco, they only supported VoLTE on phones which they sell in their store. this is a very sneaky way to do telco lock-in, which is supposed to be forbidden under imda rules.

Ohwow, this still happens in SG?
Yeah, shouldn't this be disallowed under IMDA IIRC...

 

[froztheart]

hahahaha didn't want to say "HDB" but yeah, my friend staying 2nd or 3rd top floor in ghim moh. nice view, lousy reception. first world problem.

2/3 floor also face such mobile connectivity issue?! That one need feedback to telco liao.
VoWIFI should supplement mobile connecitivty one, but if mobile connectivity is already having issues then should sort out with telco since that's the fundamental for connectivity without even going to VoWIFI yet.

 

[loganrunning]

2/3 floor also face such mobile connectivity issue?! That one need feedback to telco liao.
VoWIFI should supplement mobile connecitivty one, but if mobile connectivity is already having issues then should sort out with telco since that's the fundamental for connectivity without even going to VoWIFI yet.

um, no, not 2nd or 3rd story.

2nd or 3rd from the top
the very tall block, where you have to change lift half way up.

 

[froztheart]

Okay, back with some new info (?).
Singtel 5G that's on my Pixel has WIFI Calling on both my WIFI networks.

But... Singtel 5G on my IOS device does not reflect WIFI Calling, nor does my SIMBA or matter of fact any other SIMs in the device too.
While, on my other IOS device, WIFI calling is available in 1 of my SIM while the other being M1 doesn't reflect WIFI Calling.

In summary, it seems like Android don't seem to have an issue with WIFI Calling on Singtel. But IOS seems to be facing issues with WIFI Calling for M1, ST, SH & SIMBA (Please if anyone has got it working on IOS, corect me if I am wrong). So it seems more of a carrier & IOS issue?

 

[A7997A]

Okay, back with some new info (?).
Singtel 5G that's on my Pixel has WIFI Calling on both my WIFI networks.

But... Singtel 5G on my IOS device does not reflect WIFI Calling, nor does my SIMBA or matter of fact any other SIMs in the device too.
While, on my other IOS device, WIFI calling is available in 1 of my SIM while the other being M1 doesn't reflect WIFI Calling.

In summary, it seems like Android don't seem to have an issue with WIFI Calling on Singtel. But IOS seems to be facing issues with WIFI Calling for M1, ST, SH & SIMBA (Please if anyone has got it working on IOS, corect me if I am wrong). So it seems more of a carrier & IOS issue?

Simba is a documented no go on iPhone.
Eight is certainly working on iPhone early this year, no idea about now.
I believe I tested maxx and had it working, but not totally certain about it.

 

[GlassDoor]

Okay, back with some new info (?).
Singtel 5G that's on my Pixel has WIFI Calling on both my WIFI networks.

But... Singtel 5G on my IOS device does not reflect WIFI Calling, nor does my SIMBA or matter of fact any other SIMs in the device too.
While, on my other IOS device, WIFI calling is available in 1 of my SIM while the other being M1 doesn't reflect WIFI Calling.

In summary, it seems like Android don't seem to have an issue with WIFI Calling on Singtel. But IOS seems to be facing issues with WIFI Calling for M1, ST, SH & SIMBA (Please if anyone has got it working on IOS, corect me if I am wrong). So it seems more of a carrier & IOS issue?

Singtel 5G wifi calling on iOS has been working well for me. I am looking at it as I type this.

 

[loganrunning]

Okay, back with some new info (?).
Singtel 5G that's on my Pixel has WIFI Calling on both my WIFI networks.

But... Singtel 5G on my IOS device does not reflect WIFI Calling, nor does my SIMBA or matter of fact any other SIMs in the device too.
While, on my other IOS device, WIFI calling is available in 1 of my SIM while the other being M1 doesn't reflect WIFI Calling.

In summary, it seems like Android don't seem to have an issue with WIFI Calling on Singtel. But IOS seems to be facing issues with WIFI Calling for M1, ST, SH & SIMBA (Please if anyone has got it working on IOS, corect me if I am wrong). So it seems more of a carrier & IOS issue?

dunno about ios, but different telcos appear to have differing support for phone brands (or possibly models within the supported brand), and android versions

eg, on my home m1 broadband:
- Nothing phone 2: ok with gomo and simba, not with eight (i assume if suported on gomo, it will also be suported on the various singtel plans)
- Oneplus 11, 12, 13, 13R - ok with gomo, simba, eight.
- didn't test with maxx because the SIMs are in old pre-2020 phones where the telcos won't suport VoLTE)

on friends phones on their home broadband (m1, singtel, VQ):
- various Realme and Oppo A-series phones below the $400 price point when new: all ok on singtel sim only, simba, eight
- my phones when logged into their broadplan LAN, had the same VoWiFI as when tested at home.