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WiFi Calling... How does it work?


Decembersangel72
Silver Contributor

OK, an oldie here so be kind and simple in any explanation i.e. no acronyms 😁
I was thinking about how WiFi Calling actually works 🤔 
With iD call plans certain numbers are ‘charged’ (084, 087, 09, 118 etc) and I was thinking that if a ‘charged’ call was connected through WiFi Calling only then surely it should be ‘free’ as you are not using iD mobile network for that call?!?!? Or are you not able to use one without the other?
For example. I am with iD Mobile with regards to unlimited calls and texts with 5GB data/mth plan BUT if I used WiFi Calling to phone a ‘paid for’ number would it be free as my broadband supplier is BT and the call would be placed over their internet connection (at home).
I kind of understand that iD would be involved at some point, initially, but if I turned off my data and VoLTE,  WIFi Calling would connect the call via my BT broadband and so how could iD be able to charge for the call when it doesn’t use their network??
Just a thought and any help is appreciated!

Best answer by WelshPaul

Decembersangel72 wrote:

OK, an oldie here so be kind and simple in any explanation i.e. no acronyms 😁
I was thinking about how WiFi Calling actually works 🤔 
With iD call plans certain numbers are ‘charged’ (084, 087, 09, 118 etc) and I was thinking that if a ‘charged’ call was connected through WiFi Calling only then surely it should be ‘free’ as you are not using iD mobile network for that call?!?!? Or are you not able to use one without the other?
For example. I am with iD Mobile with regards to unlimited calls and texts with 5GB data/mth plan BUT if I used WiFi Calling to phone a ‘paid for’ number would it be free as my broadband supplier is BT and the call would be placed over their internet connection (at home).
I kind of understand that iD would be involved at some point, initially, but if I turned off my data and VoLTE,  WIFi Calling would connect the call via my BT broadband and so how could iD be able to charge for the call when it doesn’t use their network??
Just a thought and any help is appreciated!

No because a ‘WiFi call’ still has pass through a PTSN to complete the call.

The ‘WiFi calling’ part of the call goes as follows:  Your Handset > Your Internet > Your Mobile Network. But, there is more that goes on to complete the call.

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4 replies

andewhite
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  • June 1, 2024

Unfortunately not @Decembersangel72.

The iD WiFi Calling service uses your BT Internet connection to reach the iD Mobile network, instead of using a cell tower to reach the iD network.

If the call from your iD SIM wasn’t routed through the iD network, it would not work.


WelshPaul
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  • June 1, 2024
Decembersangel72 wrote:

OK, an oldie here so be kind and simple in any explanation i.e. no acronyms 😁
I was thinking about how WiFi Calling actually works 🤔 
With iD call plans certain numbers are ‘charged’ (084, 087, 09, 118 etc) and I was thinking that if a ‘charged’ call was connected through WiFi Calling only then surely it should be ‘free’ as you are not using iD mobile network for that call?!?!? Or are you not able to use one without the other?
For example. I am with iD Mobile with regards to unlimited calls and texts with 5GB data/mth plan BUT if I used WiFi Calling to phone a ‘paid for’ number would it be free as my broadband supplier is BT and the call would be placed over their internet connection (at home).
I kind of understand that iD would be involved at some point, initially, but if I turned off my data and VoLTE,  WIFi Calling would connect the call via my BT broadband and so how could iD be able to charge for the call when it doesn’t use their network??
Just a thought and any help is appreciated!

No because a ‘WiFi call’ still has pass through a PTSN to complete the call.

The ‘WiFi calling’ part of the call goes as follows:  Your Handset > Your Internet > Your Mobile Network. But, there is more that goes on to complete the call.


Decembersangel72
Silver Contributor

Ah, thank you @andewhite and @WelshPaul 👍
This makes more sense now that you have expalined it 😁
I knew I simplifying it, but hey you don’t ask you don’t learn🤔
Ta kindly!!


Tom
iD Mobile Employee
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  • June 6, 2024

Hi @Decembersangel72 

 

Thanks for the help here @andewhite & @WelshPaul.

 

Tom