I used to do this. I'd plug my phone in at bed, and wake up with it fully charged ready to go. Now, I plug it in before bed and charge sometimes once throughout the day. But what do the experts say?

Will overcharging your phone do any damage to the battery or the phone itself? No, the experts say your "smart" phone is just that. Pretty smart.

"“Leaving your phone plugged in overnight is okay to do, it will not drastically harm your device,” says Shane Broesky, co-founder of Farbe Technik, a company that makes charging accessories. “Your phone is very smart, once it is fully charged it knows when to stop the current from coming in to protect your phone from overcharging.”

So far so good, but there are situations when leaving that smartphone plugged in overnight can slowly reduce the lifespan of your battery.

“Lithium-ion batteries can react poorly if your phone experiences elevated temperatures, leading to a damaging effect,” explains Shane, “If you have a case on your device that does not allow for heat to escape, this heat will increase the temperature of the battery and will cause cell oxidation, which will shrink the capacity and shorten the lifespan.“

Like every battery, your phone battery will lose it's charging ability as well, and will need to be replaced. So charge away at night, and get a good night's sleep!