Apple may use super-strong sapphire screens on its iPhone 6 and iWatch, a new rumour suggests.

According to Canonical's CEO Mark Shuttleworth, Apple has just bought up enough sapphire screens to last about three years.

READ: iPhone 6 spotted with larger scratch-free sapphire crystal display, expected on the iWatch

This isn't the first time we've heard about Apple buying the screens - which are made of the second-strongest material on earth after diamonds. The initial news came from supply chain rumours, but whether it was meant for the iPhone 6 or iWatch wasn't clear.

According to Shuttleworth: "Apple just snapped up the entire three-year supply of the same sapphire display we wanted for the Edge." The Edge would have been a 4.5-inch device, had it reached its crowdfunding goal.

Of course this is based on Shuttleworth's comment so we must ask if the three-year supply is based on the usage of Canonical or Apple, which would clearly demand a lot more. Also the iPhone 6 will presumably be 5-inches so the 4.5-inch Edge screens wouldn't fit. But since it can be cut to size these may still appear on both the iPhone 6 and iWatch.

While we're at the rumour stage right now, sapphire displays - which won't be easy to scratch - appear to be coming soon.

READ: Apple iPhone 6 release date, rumours and everything you need to know - PAY MONTHLY PHONES The Samsung Galaxy S10+ is now available on EE who have been awarded the UK’s best network for the fifth year running. RootMetrics tested the four UK networks and EE was faster and more reliable than all of them, with better data performance. Their network has come a long way since they launched in 2012. Back then they had 11 UK cities covered by 4G. Today they cover most of the UK’s land mass, thanks to 19,000 state-of-the-art 4G sites. They’ve got faster, too – from 50Mbps to a maximum speed of 400Mbps. And they’re soon to experience even greater possibilities with the launch of 5G.

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