Apple is facing an embarrassing technical glitch after some customers reported difficulties updating their iPhone operating system to the latest iOS 10 software, which became available Tuesday. After downloading the iOS 10 update, the smartphones or iPads shut down to install the software. Then, rather than the device automatically turning back on with iOS 10 installed, a screen appeared prompting users to plug their handsets into a computer, rendering the phone useless until they did so.

Hundreds of social media users complained about the issue to Apple’s Twitter account.

"We experienced a brief issue with the software update process, affecting a small number of users during the first hour of availability," Apple said in a statement. "The problem was quickly resolved and we apologize to those customers."