CARING FOR YOUR DEVICE
If you don't start taking care of your iPhone and iPad now, chances are you'll end up with some problems down the road. These tips will ensure that you and your beloved iDevice get the most out of your time together.
For long-term maintenance, avoid exposing your iPad or iPhone to temperatures higher than 95 degrees Fahrenheit, since this can permanently damage your battery. You can conserve energy by turning down the brightness on your display or turning on Auto-Brightness by going to Settings > Display & Brightness. Also consider disabling the 3D parallax effect Apple introduced in iOS 7 by going to Settings > General > Accessibility > Reduce Motion. If you're not in range of a Wi-Fi network, turning off Wi-Fi in Settings makes it so your device is not constantly looking for an available hotspot.
APPS AND UPDATES
Outdated software can occasionally cause issues with your iDevice, so if you are noticing problems, consider updating to the latest version of iOS by going to Settings > General > Software Update and checking for any available updates. However, if you have an older iPhone model such as the 4s, then choosing to update isn't always the best decision, as updating has been known to cause some serious lagging issues. If you would like to continue using your device, then opt out of the usual updates.
If you drop your iPhone in water, power it off and don't turn it on or charge it again until it is completely dry. To remove any trace of moisture, wipe the phone down with an absorbent cloth and then place it in a jar of uncooked white rice for a couple of days. Once it's dry, try turning it back on. With any luck, your device should work just fine! Also consider purchasing a protective case and screen protector to ensure that you don't crack or scratch your screen the next time you drop it.