Tech Pros Explain Why You Shouldn’t Be Using Your iPhone Once It Gets Below 20% Battery

There’s a common saying among many tech experts that the iPhone’s ideal battery charging zone is between 30 and 80 percent. We’re often reminded not to charge our phones all the way to 100 percent and to avoiding letting it dip down to 0 percent before giving it a charge. But what’s the big deal if your phone’s battery drops low? And why is it recommended that you take action and not wait — or, worse, continue using your phone while its battery is on its last leg?

This is why you shouldn’t use your phone when you notice its battery power has dipped below 20 percent. And what to do if that happens.