The plug itself will always supply enough power. You want to look for a charger that outputs at least 5W to charge an iPhone (10W for an iPad). I'm not sure if the iPhone is capable of charging faster with a 10W charger.
the plug itself will always supply enough power. You want to look for a charger that outputs at least 5w to charge an iphone (10w for an ipad). I'm not sure if the iphone is capable of charging faster with a 10w charger.