Zero bars on wi-fi calling after changing phones. Already changed SIM cards.

tams118

    I work in an area with no service. I've changed phones twice since I've worked in this place - all iPhones. I've never had an issue with using wi-fi calling and I've always gotten at least 1-2 bars. I switched to an iPhone XS about one month ago and since then, I only get zero bars. I just got a new SIM card and I still have the same zero bars. Is there anything else I can do to try to get my signal back? Or is the problem just with my new phone? If so, is this a known problem or is it just my phone?

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