Since late 2016, users who downloaded iOS 10 have been complaining about the so-called 30% battery bug, which caused their phones to drain from 30% to 1% and then shut off -- or just shut off at 30%.
TechCrunch reports that installing iOS 10.2.1 has resulted in 80% fewer shutdowns on iPhone 6s models and 70% fewer shutdowns on iPhone 6 devices.
Here’s the statement Apple provided to TechCrunch: