Is Leaving Your Phone Plugged In Bad for the Battery? Apple, Samsung and Google Weigh In

If you’re still sprinting to unplug your phone the second it hits 100% because you’re terrified of “overcharging,” you can officially relax. That advice is ancient history. Modern smartphones are smart enough to cut off the power once they’re fully charged, so leaving your iPhone or Android plugged in overnight isn’t going to destroy the battery.

But let’s be clear: Just because it’s safe doesn’t mean it’s optimal. While you can’t technically overcharge the battery, keeping a lithium-ion cell pinned…