Interesting to hear, but if it is indeed dropping down to 3G (which I think it will be as I don't think the device supports VoLTE), I wouldn't expect it to last long unfortunately, as I believe it is still Three's plan to switch off all of their 3G c...
Sorry to hear about the issues you've been having.Network problems in your area shouldn't have any impact on WiFi calling, so if that's not working, I'm wondering whether your device is actually compatible with Smarty's WiFi calling.Also, getting 'Li...
In which case it's unlikely to be due to the frequency bands supported or carrier aggregation, but could be to do with the radio or antenna in the phone. Swap the SIMs over next time and repeat the test.
