f you want to buy an iPhone 5 and enjoy 4G speeds all around the world, you may have to buy it from Verizon or Sprint. That’s because the LTE chip in AT&T’s version of the iPhone 5 is far more limited than its competitors. Any iPhone 5 will be able to roam internationally by falling back to 3G networks, but Verizon and Sprint iPhones will enjoy 4G LTE speeds throughout much of the globe because they support five LTE bands. According to Apple, the AT&T iPhone 5 will support only two LTE bands. Read the full story at ARS Technica.