Several iPads bricked during iOS 9.3 installation
Several iPads bricked during iOS 9.3 installationApple Press Kit

Apple iPad Pro has gained maximum attention and a lot of good reviews since its launch, but not everything is in favour of the new tablet. Earlier this week, several iPad Pro owners flooded Apple Support forums with complaints about unresponsive black screen after fully charging the tablet. Apple acknowledged the issue and offered an interim fix for the problem, but the root cause remains unknown.

In an Apple support document on Thursday, the iPad Pro maker said a force restart will turn the tablet to its normal functioning state.

"To get back to using your iPad Pro, force restart it by pressing and holding both the Sleep/Wake and Home buttons for at least ten seconds, until you see the Apple logo," reads the support document.

Apple also said the unresponsive screen issue in the iPad Pro is being investigated and a more prominent fix is underway. The Apple Support forum has an active thread for the issue and several users have shared similar complaints.

"I plug it in for the night and in the morning it is non responsive. I always have to hold the home button down to re-boot. Did you find out why this is happening?" wrote one user.

"At night [iPad Pro] was down to 40% so I charged it and went to bed. When I woke up it was "dead". It wouldn't wake up. I needed to perform a hard reset to get it to come to life. Worked on it for a couple of hours and had to run an errand. Plugged it back in as I was going to need a full charge later that day. Came back to it, same thing. Dead. I needed to perform a hard reset to get it to turn on. Used it more, then last night plugged it in and this morning, same thing. I am thinking that there is an issue with this iPad," wrote another user explaining the nature of the problem with a new iPad Pro.

According to IBTimes, UK, the issue is said to be found on both 32GB and 128GB variants of Wi-Fi and LTE models running iOS 9.1. Some users indicated that performing an iCloud Backup while setting up the iPad Pro triggers the freezing issues, but Apple is yet to identify the cause.