Apple Stores worldwide began offering screen protector installation for iPhone 6, 6s, 6 Plus and 6s Plus users starting today. As previously reported, Apple has partnered with Belkin to place specialized screen protector installation machines in the back of stores, allowing customers to have their screen protector properly installed free of charge after they buy it. Two types of screen protectors — “Invisiglass” and “Anti-Glare” — are being offered. Apple will guarantee the installation of screen protectors and offer a free replacement and re-attempt at installation if the protector isn’t installed successfully for the customer. Many stores began rolling out the new process last week, but it is available everywhere as of today.