30GB on Three for just £10 a month? It's the best SIM only deal ever

Three has been dominating the cheap SIM only deals market for some time, making the network the obvious choice if you've come to the end of your contract but want to keep using your beloved smartphone. It even won the TechRadar sponsored Deal of the Year award for its SIM only prowess at last week's Mobile Choice Consumer Awards.

Now Mobile Phones Direct is using the Three network as a vehicle for an extraordinary cashback offer that can save you even more. It's offering £96 cashback on the usual 30GB for £18 per month tariff, making the effective monthly cost a minuscule £10 per month!

And the retailer isn't stopping there. If 12GB is plenty of data for your surfing and streaming needs, then the £72 cashback it's offering on that data allowance brings the effective monthly cost down to £8 per month. Plus, if you can't bear the shackles of capped data plans, then there's £108 cashback to claim on the Three all-you-can-eat SIM only deal.

You can take advantage of the promotion by heading to the following links:

12GB data for £8 per month (after £72 cashback)

30GB data for £10 per month (after £96 cashback)

All-you-can-eat data (600 mins) for £19 per month (after £96 cashback)

All-you-can-eat data (unlimited calls) for £20 per month (after £108 cashback)

These Three SIM only deals still can't match Carphone Warehouse's budget iD brand for small data plans - nobody can touch iD's £3.99 pm for 500MB for pure thrift. But the minute you want any more than 2GB, you may as well just go for one of the above Three deals - nobody else can match these prices from Mobile Phones Direct at the moment.

There is a bit of a catch, however (you didn't think it was going to be THAT easy, did you?). The only way to get these cheap, cheap prices is to pay a higher tariff each month and then claim chunks of cashback every couple of months. It's a hassle, we know, but we think it's worth it for the price you'll end up paying - a bargain of Black Friday-like magnitude..

How do I claim the cashback?

It's a bit of a faff, but Mobile Phones Direct gives a full explanation of how to claim back your cash. Every two months from February 2018 onwards, you'll claim a fifth of the total cashback sum.

To claim, you have to fill out a cashback claims form which can be found in the ‘My Account’ section of the Mobile Phones Direct website. Claims must be received within 60 days from the date shown on the bill. Once approved, Mobile Phones Direct says that cashback is paid within 14 working days directly into your bank account.

It's also worth noting that the cashback becomes void if you disconnect from the network prior to making your payments.

What else do I get with Three?

Three has two types of plan that you can choose from. Its Essential plans are usually cheaper, but all of the SIM only deals above are Advanced plans.

As well as giving you a personal hotspot allowance and free calls to customer services, there are two main benefits to going Advanced. Firstly, there's Go Roam, which lets you feel at home when abroad by letting you use your data, call and text allowances in 60 worldwide destinations such as the US, Australia and Brazil. And then there's Go Binge allowing you to stream Netflix, TVPlayer, Deezer and SoundCloud away from Wi-Fi without eating into your data allowance.

Best SIM only deals

If you can't be bothered with redeeming cashback, want to go with a network other than Three or just want to compare these SIM only deals to the best of the rest of the market, then you can use the interactive price comparison chart on our best SIM only deals page.