3G shutdown: check your phones

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yitz

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#3496359 28-May-2026 23:51

boosacnoodle:

Extremely common overseas and I would be more surprised if it weren't the case here. Wireless broadband traffic is already deprioritised behind mobile traffic. There's also the Public Safety Network (PSN) which has priority over general users, too. So there's at least three, if not four (or more), tiers:

Public safety network
General customers
Wireless broadband
All the others, where you pay by the megabit (Mighty Mobile) or "Endless" plans once the limit is exceeded (One NZ / Spark)

Is VoLTE call data traffic prioritised over internet/browsing data traffic?

There is a big difference in cost per data allowance between even domestic data-only SIMs / tablet plans / mobile broadband data cards and full (call+txt+data) mobile phone plans too.

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#3496360 29-May-2026 06:23

yitz:

boosacnoodle:

Extremely common overseas and I would be more surprised if it weren't the case here. Wireless broadband traffic is already deprioritised behind mobile traffic. There's also the Public Safety Network (PSN) which has priority over general users, too. So there's at least three, if not four (or more), tiers:

Public safety network
General customers
Wireless broadband
All the others, where you pay by the megabit (Mighty Mobile) or "Endless" plans once the limit is exceeded (One NZ / Spark)

Is VoLTE call data traffic prioritised over internet/browsing data traffic?

@yitz Yes 100% VoLTE is not internet traffic it is packet switched voice calling

deadlyllama

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#3496393 29-May-2026 09:25

alinz:

For example - 8.33gb/m for ~$8 from a 100gb 365 day esim @ $93.32. Local number gets parked with Warehouse Mobile for $5 a year.

Who's offering that? It sounds like a great deal for a backup connection.

Edit: ah, https://esimdb.com/new-zealand finds it.

richms

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#3496399 29-May-2026 10:09

yitz:

Is VoLTE call data traffic prioritised over internet/browsing data traffic?

There is a big difference in cost per data allowance between even domestic data-only SIMs / tablet plans / mobile broadband data cards and full (call+txt+data) mobile phone plans too.

Yes, and that is something that IMO is favouring their bundled voice service over other products on the same data connection. Not sure why any voice app cant get prioritised but here we are where when data turns to crap because of conjestion and you have to use the very expensive service from the provider instead of a free/lowcost app.

If the telcos would stop their game they play of charging obscene amounts to call certain countries this would be less of an issue, but they must love that cashcow of charging over a dollar a minute for a call to overseas devices which would be covered by any data allocation in any other app.

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boosacnoodle

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#3496409 29-May-2026 11:51

richms:

Yes, and that is something that IMO is favouring their bundled voice service over other products on the same data connection. Not sure why any voice app cant get prioritised but here we are where when data turns to crap because of conjestion and you have to use the very expensive service from the provider instead of a free/lowcost app.

Well, we will have that soon with 5G Slicing and we will even be able to pay handsomely for the privilege.

huckster

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#3496416 29-May-2026 13:06

richms:

If the telcos would stop their game they play of charging obscene amounts to call certain countries this would be less of an issue, but they must love that cashcow of charging over a dollar a minute for a call to overseas devices which would be covered by any data allocation in any other app.

Quite often it is the telco at the other end that causes the outrageous charges. Admittedly, I may have misheard that in passing when talking to someone in the know many moons ago.

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nztim

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#3496423 29-May-2026 13:38

richms:

stop their game they play of charging obscene amounts to call certain countries this would be less of an issue, but they must love that cashcow of charging over a dollar a minute for a call to overseas devices which would be covered by any data allocation in any other app.

All comes down to termination agreements between telcos. For example, I can call 20 countries from my mobile and get 250 minutes per month to them

and where there is not a favourable agreement it becomes a you charge me then I charge you bs argument

As for telcos prioritizing their data for their own voice calls over other apps, can't blame them for that.

Any views expressed on these forums are my own and don't necessarily reflect those of my employer.

boosacnoodle

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#3496612 29-May-2026 19:52

yitz:

Is VoLTE call data traffic prioritised over internet/browsing data traffic?

There is a big difference in cost per data allowance between even domestic data-only SIMs / tablet plans / mobile broadband data cards and full (call+txt+data) mobile phone plans too.

Just finished testing with both One NZ prepaid SIM and Skinny (Spark) prepaid SIM. Both had the same outputs as far as I can tell:

QCI 8 for ordinary internet data
QCI 5 for IMS signalling
QCI 1 only when a dedicated VoLTE voice bearer is active

Unfortunately, I don't have a physical SIM which can be used in this phone to check the QCI on a post-paid plan.

Interestingly, Spark is using IPv6 (2403:9800:.../64) for IMS, whereas One NZ is using IPv4 (10.x.x.x/8) - but both still IPv4 with CG-NAT (100.64.x.x/10).