Same here. New XM user. Poor coverage for all mobile companies where I live. Wifi Calling is how we communicate. Since switching five iphones to XM three weeks ago, we are getting call failed quite often (guessing 50% of the time, but will start to track it). One of the phones is a new iPhone XS purchased from Xfinity. Customer Service transferred me to Tier 2 support and there was between a 6 to 9 hour wait. If you live in an area with poor VZW service, I'd stay away from XM until they get this fixed.
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