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Fi uses TMobile/Sprint + US Cellular. They are an MVNO. I don’t think they support WiFi calling on iPhone - deal breaker for those with bad coverage at home/wor
by 8ytecoder 5y ago
Fi uses TMobile/Sprint + US Cellular. They are an MVNO. I don’t think they support WiFi calling on iPhone - deal breaker for those with bad coverage at home/work.