I've owned and used iPhones and iPads for more than a few years now, and I'm STILL learning new things about them every once in a while. The beautiful part is that a lot of these are based on efficiency, making your life a heck of a lot easier. 

Here are 13 genius tricks every iPad and iPhone user needs to know.

Note: I concede that you may know some, if not all, of them. Rest assured, though, that there are many people out there who do not know most of these. 

1. Putting your phone into Airplane Mode will charge your phone TWICE as fast

17 Genius Tricks Every iPad and iPhone User NEEDS To Know
via lifehacker

2. Extra zero? Swipe right to remove it!

17 Genius Tricks Every iPad and iPhone User NEEDS To Know
via Quora / Steve Tamburello

3. Travelling abroad? Use Google Maps OFFLINE. 

Simply zoom into a map area then type "ok maps" into the search box, which will give you the data despite no connectivity.

17 Genius Tricks Every iPad and iPhone User NEEDS To Know
via Quora / Kartik Ayyar

4. Want less strain on your eyes, especially at night? Settings -> General -> Accessibility -> Invert Colors

17 Genius Tricks Every iPad and iPhone User NEEDS To Know
via WonderHowTo

5. Have too many favorite apps to fit on the dock? Just drag a folder there! 

17 Genius Tricks Every iPad and iPhone User NEEDS To Know
via OS X Daily

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6. Space two times = a period. 

17 Genius Tricks Every iPad and iPhone User NEEDS To Know
via Quora / Shrey Rawat

7. Make your iPad more comfortable with a THUMB keyboard. Simply swipe across the keyboard.

17 Genius Tricks Every iPad and iPhone User NEEDS To Know
via Quora / Hannah Yang

8. Add a phone number pause 

Simply hold the asterisk (*) after the number then a comma will appear. Add another number. This is great for when you call a number with an extension.

17 Genius Tricks Every iPad and iPhone User NEEDS To Know
via Quora / Bahaa' Awartany

9. You can close more than ONE app at once. Just use three fingers, which means three apps closed at once.

17 Genius Tricks Every iPad and iPhone User NEEDS To Know
via Quora / Michael Frederiksen

10. You can use most Bluetooth keyboards with your iPhone, turning it into a mini word processor.

17 Genius Tricks Every iPad and iPhone User NEEDS To Know
via Quora / Tom Soderlund

11. Purposely misspelling a word will make the contraction appear, increasing your typing speed!

17 Genius Tricks Every iPad and iPhone User NEEDS To Know
via The iPhone Cheat Sheet

12. While your calculator is open, turn your phone sideways and it turns into a scientific calculator.

17 Genius Tricks Every iPad and iPhone User NEEDS To Know
via Quora / Glyn Williams

13. You can use your camera WITHOUT entering your password. Simply swipe the camera icon.

17 Genius Tricks Every iPad and iPhone User NEEDS To Know
via Quora / Roderic Campbell

14. Passcode with letters instead of numbers

Go to Settings > General > Passcode Lock > Turn off Simple Passcode. Once you do this, a screen will pop up where you have to enter a new password along with a full QWERTY board.

17 Genius Tricks Every iPad and iPhone User NEEDS To Know
via gigaom

15. Custom vibrations

Instead of having a basic vibration, make your very own. You can also assign these to specific people so you can distinguish between something you care about and something you don't. Go to Settings > Sounds > Ringtone > Vibration > Create New Vibration. Have a blast! To add a custom vibration for a contact, do this in the Contacts portion of your phone.

17 Genius Tricks Every iPad and iPhone User NEEDS To Know
via Business Insider

16. Use your Apple earbuds

Just press the center of the headphone button and it'll take a picture. Now you can reach selfie glory. 

17 Genius Tricks Every iPad and iPhone User NEEDS To Know
via YouTube / TodaysiPhone

17. Find out what planes are flying above you

Some will say that you only need to say "Planes overhead" or "What flights are above me?" but that doesn't always work. CNET writer Jason Cipriani found out that you need to say the following: "What Wolfram what flights are overhead." 

17 Genius Tricks Every iPad and iPhone User NEEDS To Know
via CNET
Collage Source: Steve TamburelloLean Crew, and Hannah Yang