Your phone is lying to you. If you鈥檝e ever experienced that weird moment when your iPhone dies around 20 percent or watched your battery linger at 100 percent for hours just to suddenly plummet, you know all too well the wily ways of the iPhone battery. Here鈥檚 what your phone is actually up to:

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So this all boils down to the fact that lithium ion batteries are persnickety things. It鈥檚 really bad for them to be either completely, fully charged or completely, fully empty. When your phone is plugged in and charging, it will stop before it reaches聽100 percent. On the flipside, your phone will also shut down before it鈥檚 at zero. This keeps your phone鈥檚 battery healthy, but after some time your phone will start to get confused by the slightly-off charge. This is when you鈥檒l see your phone die off at 20 percent.

Luckily, there鈥檚 a pretty easy way to fix this. All you need to do is get your battery back on track. Step one is to drain your phone鈥檚 battery completely so it dies and shuts off by itself. Then plug your phone in and let it charge up to full capacity. Leave it plugged in for an extra couple of hours to ensure that it gets a complete charge. Now restart your phone by holding down the lock and home buttons until the Apple icon appears on your screen. Now repeat the process (let your phone die and then charge it beyond 100 percent). Boom, your phone鈥檚 battery is recalibrated and should be ready to go!

How do you save your battery? Let us know @BritandCo!

(h/t Thrillist)