No 4G calling on oppo A40

[Ianm25]

Its say compackable to with 4G calling

[TallTrees]

Hi @Ianm25 

Is your sim an older version ?

Older sims don't accommodate 4g ?

[Ianm25]

No it worked on my samsung s10e#

[Spindle]

@Ianm25 

Maybe it hasn't been rolled out to your SIM yet?

My 4G calling/VoLTE only started working very recently.

See FAQs re PAYG here, https://www.o2.co.uk/help/international-and-network/network-and-coverage/3g-switch-off

P.S. Actually I cannot see your phone listed as compatible? 

There seem to be very few Oppo phones listed as compatible.

[TallTrees]

@Ianm25 

Device Settings

• Make sure your Oppo A40 is set to use 4G. Go to Settings > Network & Internet > Mobile Network > Preferred network type, and select 4G.

[Enlli]

https://mobilevikings.be/en/setup/oppo-phone/device/activate-volte/p5_d28582_t17927?srsltid=AfmBOorY...