Why does all of my iPhone chargers keep getting shorts
My iPhone 4S is about 2 years old. I've dropped it numerous times but it has never been water damaged. Anyway, every time I buy a new charger, whether it be from 5 Below, Walmart, my school's book store, etc, the charger gets a short circuit within days of my purchase. I'm not sure why this keeps happening. My phone doesn't over heat, there's no burning smell or anything. I do use a Belkin double-charger adapter piece & I thought that this was the reason why it keeps happening.
Could anyone give me some insight?