There are numerous reports of iPhone XS and iPhone XS Max owners discerning that their phones do not begin charging when a Lightning cable is plugged in when the screen is off. Affected users explained that they managed to discover a workaround of this issue in which they have to assure the screen is on and re-plug in their cables for charging to begin.
This issue has been highlighted in a video by UnboxTherapy (embedded below), who reciprocates the charging test on 8 different iPhone XS models. The majority of his phones manifest the problem — the devices do not react to the cable being plugged in as they should, with most thrusting into action once the screen is nudged up.
The indications of ‘ChargeGate’ are slightly diverse. Some devices do not charge until the screen is woken up, unless by tapping the screen or using Raise to Wake. Some others do not charge until the device is awake and the cable is unplugged and plugged back in.
The UnboxTherapy youtube channel examined some of different iPhone XS units in their studio, confirming the various problems that people are seeing. There are a flood of comments on Reddit and the Apple Support forums as well.
It’s not obvious if this is a hardware or a software issue. It surely does not seem to be affecting every iPhone XS model, so it might be a hardware issue with a particular batch or an irregular firmware issue. People affected by the problem indicate that the iPhone works with wireless charging pads normally.
Some people have shown to USB Restricted Mode being the cause. Though, the security measures implemented by USB Restricted Mode should not modify simple charge bricks in any way. We’ll have to wait for Apple to clarify what is happening here.