iPhone XS Owners Complaining About Mobile Data Connectivity Issue After iOS 12.1.1 Update<img style="float: left; margin-right: 10px"  src="

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With the iPhone XS and iPhone XS Max, Apple has switched entirely to sourcing modem from Intel. And that might be the reason behind the numerous Wi-Fi and data connectivity issues that most iPhones owners have been reporting right since launch. Apple did fix most mobile data and Wi-Fi issues with a minor point release iOS 12 but it looks like iOS 12.1.1 update reintroduces some of that issues.   
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iPhone XS Owners Complaining About Mobile Data Connectivity Issue After iOS 12.1.1 Update