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I'm trying to get a second SIM as a back-up because I often find myself without service on Smarty (Three).
My current back-up SIM is GiffGaff (O2), and I'd like to replace it as they don't have WiFi calling.
To further complicate matters, some MVNOs (mobile providers who piggy-back off the main networks) say they offer WiFi Calling, but I read about a case where someone had a Pixel 7 Pro but did not have WiFi Calling with Lebara (Vodafone), despite Lebara saying WiFi Calling was available, yet when they used a Vodafone SIM, it worked no problem.
I know that you have to have a phone compatible AND a network that has capability for WiFi Calling to function.
I think I'm just going to have to buy a SIM and check whether it works OK.
My current back-up SIM is GiffGaff (O2), and I'd like to replace it as they don't have WiFi calling.
To further complicate matters, some MVNOs (mobile providers who piggy-back off the main networks) say they offer WiFi Calling, but I read about a case where someone had a Pixel 7 Pro but did not have WiFi Calling with Lebara (Vodafone), despite Lebara saying WiFi Calling was available, yet when they used a Vodafone SIM, it worked no problem.
I know that you have to have a phone compatible AND a network that has capability for WiFi Calling to function.
I think I'm just going to have to buy a SIM and check whether it works OK.
