With iPhone XS and XS Max units making their way to more and more people, an unpleasant charging issue has come to light(ning?). Numerous users have reported on the Apple discussion boards that their phones wouldn't automatically start charging when the Lightning cable is connected - in some cases a tap on the screen was needed to wake up the phone and start charging, others required an unplug-and-plug-back-in type of procedure. Y U no charge? We did try ourselves with the units we have at the office, but for better or worse ours charge just fine, both with the bundled charger and...
Source: https://www.gsmarena.com/some_iphone_xs_and_xs_max_units_refuse_to_charge_until_woken_up-news-33524.php