Apple has silenced for complaints that its new iPhone XS and XS Max smartphones do not charge consistently when they are plugged in.
Several users reported that their device refused to load if it had been idle for some time. Some are charged only if the screen is "awake."
Video blogger Lewis Hilsenteger described the problem as a "charger" in a video that illustrates the problem.
Nevertheless, Apple has not yet commented on the problem.
Hilsenteger introduces YouTube channel Unbox Therapy with over 12 million subscribers.
In a video released on Saturday, nine iPhones tested by plugging them into an official Apple source.
While charging the iPhone X 2017 smoothly, many new XS and XS Max phones refused to charge when they were connected.
Most phones are charged only when the wake-up display is on. However, one of them will not charge at all.
Hilsenteger said he was warned when the viewer sent him by email describing their problems.
He did not notice this problem because he was wireless, not the power cord of the device.
"Responding to such people on such a platform should bring light and, hopefully, some software solution, if possible," he said in the video.
"This is my job; I have to call these things, I have to keep these companies responsible."
Several complaints about missing XS and XS Max also posted on the Apple discussion site.
Criticisms can also found on social media, where some people report that they can not charge their phone at all when the battery expires.
Some users have considered that the problem is related to a recent change in Apple's security settings.
Following the release of iOS 11.4.1, the Lightning connector on the iPhone can turn off when the phone is down for a while. This could prevent the thieves, cyber attackers, or police officers from accessing them.
"In some cases, it may not charge," advises the company on its website.
However, this does not explain why more and more users of iPhone XS and XS Max face the problem.
Apple has not yet replied to the BBC's comment request.