Owners of iPhone are reporting that Apple's recently-released iOS 10.1.1 update is causing havoc with the battery life.
Complaints first started cropping up on Apple's support forum at the end of October, with users moaning that their iPhone is shutting down when it's battery percentage is showing as 30 per cent.
"Updated my iPhone 5 to iOS10.1 and have been having battery problems. It jumps from 30 per cent charge to 1 per cent in a few seconds then shuts down," the original poster writes.
"Now here is the stranger part. As soon as it reboots after connecting to a charger it show [sic] 30 per cent charge. When I unplug it right away it still shows 30 per cent and runs like nothing happened for a good few hours."
"Shutting the phone down at night with a good 80 per cent charge, it won't reboot in the morning due to no battery charge. I plug it in and its back to 30 per cent in a few seconds."
The thread has since racked up 19 pages of users' complaining about the same problem. The issue appears to be affecting most iPhones, from the iPhone 4 through to the newest iPhone 7 and 7 Plus models. V3 has experienced the issues itself on an iPhone 6S device.
Apple hasn't yet offered an official explanation for the issue or said that it will release a fix, but some forum users have reported that Apple Support says it is aware of the problem and working on an update to resolve whatever is causing the issue.
In the meantime, some users have said that upgrading turning off the 'raise to wake' feature solves the problem, while others have recommended upgrading to iOS 10.2 via Apple's beta programme resolves the issue.
News of this battery drain issue comes just a week after Apple announced a battery replacement programme for iPhone 6S Plus handsets after it admitted that some handsets were randomly shutting down.
Why does Facebook store "my entire call history with my partner's mum", asks developer who requested his Facebook data
Facebook database included text-message metadata - despite not using Facebook Messenger for SMS
Before Ocado could start selling the technology it had developed to other retailers, it had to tear down and rebuild its own monolithic architecture
Successful attack could result in harm to patients and financial loss, warns NHS governing body
Guccifer 2.0 claimed to be a lone Romanian hacker - until a schoolboy error gave him, her or them away