phone acting up since the latest ios update, anyone else?

Give it 48 hours before doing anything drastic. After a big update the phone re-indexes photos and Spotlight in the background and the battery drain is normal for a day or two. Update all your apps from the App Store, the crashers are usually ones not yet rebuilt for the new version. If it's still bad after that, Reset All Settings under Transfer or Reset, it keeps your data but clears the settings layer, which fixes the keyboard lag more often than not.