While Black Friday doesn't actually arrive until Friday 23, there are still some surprisingly great SIM-only deals around at the moment. If you're coming to end of your contract, there are some great options available to you from Virgin and Three.
Virgin Media recently tripled the amount of data available with its £18 a month SIM-only contract, bringing the grand total to 45GB of 4G mobile data.
It also includes 5,000 minutes, unlimited text messages and access to Virgin Media's network of 3.5 million public Wi-Fi hotspots around the UK, including across the London Underground network.
But while 45GB sounds like a generous amount of 4G mobile, Three is offering 100GB of mobile data to those who sign-up to its monthly SIM-only contract.
Best of all, the £20 a month SIM-only contract includes support for a personal hotspot, so you can use that hefty 100GB allowance to share the love from your smartphone and get your other devices online when there's no Wi-Fi nearby.
And in case you're worried that 100GB isn't enough 4G data and you might run out, Three customers are able to use Snapchat, Netflix, Deezer and Apple Music without any of the data counting towards your monthly allowance.
As with all Three contracts, you'll be able to use your mobile data in more than 70 countries around the world for no extra charge. These include Spain, France, United States, Australia, Brazil, and Hong Kong.
The 12-month SIM-only contract also includes unlimited minutes and text messages.
If you don't fancy signing up to Virgin Media and Three, then why not check the other options available in T3's interactive comparison chart below?