Three has launched a new 30GB tariff that lets you share your entire allowance among your other internet-enabled devices, such as tablets or laptops.
The allowance can be shared thanks to the so-called 'tethering' function of smartphones, which effectively turns them into a portable WiFi unit.
When in tethering mode, smartphones emit a mobile internet connection which you can use to get online with other gadgets.
That means you won't have to rely on a Wi-Fi hotspot, or shell out more money for a separate internet connection. Tablets with their own data connection come with a monthly fee, which is another bill to pay.
Three, and other networks, already offer all-you-can-eat data allowances, but these typically only allow 8GB of tethering. So Three's new 30GB tariff frees you up significantly.
According to Three, 30GB will let you stream 85 hours of standard definition video, 725 hours of music, or browse the web for 1,200 hours. Which should last you the month.
"At Three we're constantly looking to extend the range of different plans we offer, addressing the needs of our customers and consumers, by providing them with as much choice as possible when finding a data plan that's right for them," said Danny Dixon, Three's director of customer strategy.
"The introduction of this new 30GB tariff aims to do just that. It's perfect for smartphone lovers that don't want to commit to an All-You-Can-Eat data plan but still want to get the best out of their device and have the peace of mind, without fear of going over their monthly data allowance."
The tariff costs £30 a month, including unlimited texts and minutes.
It also includes Three's exclusive benefits like 4G at no extra cost, and Feel at Home, which lets you call mobile numbers from abroad for no more money than if you were at home.
Three also offers the iPhone SE, which went on sale yesterday.
You can see its pricing here – the tariffs start at £31 a month with nothing to pay upfront.
Not sold? Maybe one of these other deals will sway you instead.