China's official state news agency reports that the iPhone will launch at the same time on China Mobile, the world's largest wireless carrier.
The no-contract carrier adds a budget-friendly cousin of the HTC One.
There are two kinds of 4G -- the FDD-LTE we use in the UK, and TDD-LTE, which is becoming more popular around the world.
The company's Mobility Report projects 85 percent of North American mobile subscriptions will be tied to an LTE network by 2019.
Telstra has taken the covers off a new 4G mobile broadband Wi-Fi hotspot using next-generation LTE-Advanced technology, just days after Telstra partner Netgear accidentally leaked it online.
The latest rollout brings the carrier's LTE coverage to 461 markets, covering almost 250 million people.
EE is switching on the "fastest 4G mobile network in the world" in London's hipster heartland, before opening up LTE-A next year.
The Web giant says KitKat can run on lower memory requirements, which means it can ship on low-end phones as well as high-end ones. That should help with Android's fragmentation problem, the company says.
The carrier's goal is to reach 270 million people by year's end.
The company now offers LTE service in 230 markets around the US, just off the pace of T-Mobile's 233 markets.