Since updating to 9.3.5 my iPod Touch (5th Generation) suffers from rapidly draining battery. For example, this afternoon I performed a complete charge cycle and then disconnected the device and left it on my desk, untouched for four hours with no apps running. When I checked the battery level after that idle time it showed less than 50% remaining. I've tried all of the solutions posted elsewhere including clearing and disabling all background app refreshes, power down and restart, forced restart, WiFi on, WiFi off, Bluetooth on, Bluetooth off, airplane mode on, airplane mode off, signed off iCloud (don't normally use it), and, I don't use Facebook or even have it installed. I've even gone thru Reset All Settings. All to no avail. If anyone has another suggestion or known solution I would greatly appreciate hearing about it.