You can also usually tell if a charger is real by attempting to charge your phone. Fake chargers take much longer than the Samsung-standard 30 minutes to charge your phone to 50 percent, and they often heat up quickly.
Some Samsung chargers place the charger’s information on the same side as the USB port.
You can also opt for a wireless charger at the top of the page; these are more expensive, but harder to replicate than USB chargers are.
