Some new "apple" smartphones, just appeared on the market, began to show an unpleasant mistake - incorrect charging from the regular cable Lightning. Perhaps the whole thing in iOS 12 and in the future update the problem will be fixed, but at least at the moment the company does not give any comments on this account, although aware of the problem.
Famous blogger Hilsenteger on his channel showed this bug. He demonstrated that the iPhone X was immediately charged when it was connected to the regular cable, and three of the four XS Max and two of the four XS did not react to the connection.
In most cases, charging of smartphones begins only when the owner activates the screen, sometimes to start charging, you need to disconnect and reconnect the standard charger. In many forums, users who encounter this problem are advised to contact an authorized service center or customer support.