Following LTE and Wi-Fi connectivity issues, an increasing amount of iPhone XS and XS Max owners are now reporting that their phones won’t even charge. Loyalists say this is just a software issue that should be fixed in short time.
If all worked correctly, the display on idle iPhone XS and XS Max models should light up as soon as a Lightning cable is connected. Similarly, a small sound should be played to signal that charging has commenced. However, with certain models, this isn’t happening. In fact, despite being connected, the smartphones affected aren’t even charging.
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Source: [H]ardOCP – iPhone XS and XS Max: You’re Charging It Wrong