Are you fed up of using wired charging…? The Samsung introduced the new Wireless charging for Galaxy S4 in US. Now the S4 got another feature for Samsung users with Qi wireless charging. The Qi system comprises of a charging pad and a wireless charging battery cover for the device. The charger is so convenient that you have to merely place your mobile phone on the charging pad for charging. The wireless charger is priced at $39.99 for the back plate and $49.99 for the charging pad.