Based on several discussion threads on Apple Support Communities, a number of users seem to be facing syncing failures and other syncing problems with iTunes 12 and their iOS device after upgrading to iOS 8.
iPhone or iPad battery draining faster after iOS 8.1.3 or iOS 8.2 update? Check out these tips to improve battery life
Apple released iOS 8.1.3 and iOS 8.2, which includes bug fixes, increased stability and performance improvements. While they don’t have any major enhancements that should have an adverse impact on battery life, some readers have complained that the battery is draining a lot faster after installing the update.
One of the issues that seems to be plaguing some iPhone and iPad users especially with iOS 7 or later, is the Wi-Fi toggle in the Settings app is grayed out or dimmed, which prevents them from enabling it, and connecting to Wi-Fi networks. It also results in getting the “Wi-Fi not available” error message when you access Control Center.
iPhone 5s users are reporting that they’re getting the “Blue Screen of Death (BSOD)” error, a problem that ironically plagued older Windows PCs.
According to the discussion threads on Apple support forums, iPhone 5s users are reporting random reboots following a BSOD when they use Apple’s iWorks apps.