Skinny: Slow SMS sending when VoLTE Enabled

Forums › Spark New Zealand (including Skinny and BigPipe) › Skinny: Slow SMS sending when VoLTE Enabled

ssamjh

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#298914 27-Jul-2022 13:45

I have a Xiaomi Redmi Note 9 Pro (international model), VoLTE has been enabled in the settings and I had to call Skinny to get them to activate it on their end (?) and all works well.

The only issue is SMS messages take 30-120 seconds to send when VoLTE is enabled. I'm using the Android Messages app, but I predict this issue is because messages are trying to send via "internet". Any pointers on what I could do to diagnose? Anyone else had a similar problem?

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#2946934 27-Jul-2022 14:08

Is this model approved and sold by Skinny?

Linux

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#2946936 27-Jul-2022 14:19

Can you change a setting on the handset under SMS settings to send vis CSD?

ssamjh

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#2946941 27-Jul-2022 14:32

Linux: Is this model approved and sold by Skinny?

No, it's an international model, so I'm aware this issue may not be a "fixable" one.

Linux: Can you change a setting on the handset under SMS settings to send vis CSD?

Just had a good hunt and I can't see any settings related to this, even in the hidden *#*#4636#*#* menu.

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Behodar

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#2946948 27-Jul-2022 14:41

Just for what it's worth, I have a Skinny-supported phone, VoLTE is enabled, and SMS is quick. It's likely (as you probably suspected) that the issue is with your phone rather than the network.

pootie

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#2947856 29-Jul-2022 13:56

It is most likely attempting to send SMSoIP first before falling back to regular SMS. I believe this is down to how the handset is configured - and might be nothing you can do until Spark / Skinny support SMSoIP. you could of course just live with the delay or use an alternative messaging app. You could also request Skinny to disable VoLTE... but that would depend on your preference.

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#2947912 29-Jul-2022 14:11

@pootie All NZ carriers have supported SMS over IP / PS for many years

pootie

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#2947925 29-Jul-2022 14:43

Spark / Skinny doesn't yet.

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#2947928 29-Jul-2022 14:55

pootie:

Spark / Skinny doesn't yet.

@pootie Really are you sure then how are SMS sent over 4G / 5G please do not tell me they go over CSD on 3G / WCDMA?

gajan

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#2947939 29-Jul-2022 15:22

@Linux - there are multiple ways to deliver SMS over 4G (eg via NAS or SMSoIP). In this case the handset is using the wrong type hence the delays.

My comments and remarks are not necessarily of my employer.

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#2947941 29-Jul-2022 15:27

@gajan Thanks for taking the time to post that

Delorean

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#2947945 29-Jul-2022 15:34

Maybe the lesson here is not to buy handsets from overseas carriers.

it seems unless you have an iPhone or some Samsung models, you are reliant on each network's custom settings.

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ssamjh

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#2947951 29-Jul-2022 15:39

Delorean:
Maybe the lesson here is not to buy handsets from overseas carriers.

it seems unless you have an iPhone or some Samsung models, you are reliant on each network's custom settings.

I prefer to get international stuff because it's far better value. At the end of the day I can just disable volte or put up with the delay. And honestly I use SMS so infrequently, the latter is perfectly viable.

I was mainly just seeing if anyone had any suggestions.

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#2948013 29-Jul-2022 16:25

@ssamjh - I wasn't meaning yourself, it was a general comment as even the Pixel phones are not compatible with NZ networks either. It's a shame as it's like the old days with network-locked devices by stealth

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#2948021 29-Jul-2022 16:41

This very issue was the reason I finally gave up trying to use my Nokia 7.2 - when Android 11 dropped on it, VoLTE became mandatory (i.e. I couldn't turn it off on the handset); and it suffered a 60second delay when trying to send SMS, which was untenable to me.

My solution? An Oppo A74 via Noel Leeming.

(The partial workaround was getting VoLTE disabled at the Skinny end on the Nokia, but tbh; it was the final nail in the coffin as far as that phone was concerned)

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#2948029 29-Jul-2022 16:56

I got local phone and was burned with it having a worse dialer, worse charger and paying more for it. Still not volte on it either so it doesn't solve all the problems.

Android is a trainwreck in so many ways. This is just one of them.

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