Turn off parallax: Settings>>General>>Accessibility and set Reduce Motion to on.
Turn off AirDrop/Bluetooth and Wi-Fi, if you're not going to use them: Swipe up your Control Center, and hit the toggles.
Disable location services (for apps that don't need it): Settings>>Privacy>>Location Services You can probably turn off about half, and cut down on a lot of GPS polling.
Turn off background app updates: Settings>>iTunes & App Store
Turn off background app refreshing: Settings>>General>>Background App Refresh
Disable auto-brightness: Settings>>Wallpapers & Brightness. While you're there, crank the backlight down. If you step outside, that's what the Control Center is for.
Turn off Push Notifications Settings>>Notification Center and scroll down to the Include section. Then go on a toggling spree.
Don't push. Fetch: Set mail to Fetch in Settings>>Mail, Contacts and Calendar>>Fetch New Data
Turn off Siri's "Raise to Speak" feature: Settings>>General>>Siri>>Raise to Speak.
Turn off 4G (if times are tough): Settings>>Cellular>>Enable LTE/Enable 4G
- 1.0 iPhone
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