Apple has released a software update for iPhones and iPads that speeds up data downloads on some major overseas telecom networks and a handful of small U.S. carriers.

Apple says iOS version 6.1 adds the ability to access the "LTE" networks of 36 additional iPhone carriers. Those include Alaska Communications, Bluegrass Cellular of Kentucky and C Spire of Mississippi. Internationally, they include major carriers in Italy, Denmark, Finland, Croatia, Portugal, Saudi Arabia and South Africa.

The update also includes the ability buy U.S. movie tickets through the "Siri" voice-controlled assistant feature. Also, subscribers to "iTunes Match" will now be able to download individual songs from their online lockers to their phones.

The update is compatible with the iPod Touch as well.