GiffGaff is one of our favourite mobile networks for teenagers and young adults, offering excellent-value SIM-only plans that have contract-like allowances at PAYG prices, on which it's impossible to overspend. But GiffGaff isn't only a purveyor of minutes, messages and data, it also stocks new and refurbished smartphones at some attractive prices.

For the Black Friday sale, which runs until Thursday 5 December, GiffGaff is offering up to £100 off smartphones. You'll find top prices on previous-generation iPhones, Samsung, Sony, Huawei and Motorola smartphones, for which you can buy in one instalment or pay monthly, as well as big discounts on secondhand professionally restored devices.

Some of these phones are naturally going to be cheaper elsewhere, but GiffGaff is offering the cheapest prices you will find anywhere on the web on the following options:

iPhone XR 64GB only £549

iPhone XR deals

Originally priced at £749 for the 64GB model, and now down to £619/£629 depending on where you look, GiffGaff is offering £70 off iPhone XR, bringing the price down to just £549 - that is the cheapest you will find anywhere today. 

You can also buy a refurbished model and save even more, with this option available for £459.

UPDATE: GiffGaff has now sold out of this special deal, but you can now pick up iPhone XR at the same low price at Argos.

Here are some other options:

Retailer Price Delivery  

Price comparison from over 24,000 stores worldwide

Huawei P30 128GB only £399

Huawei P30 deal

Another price that won't be beaten anywhere else is GiffGaff's £399 asking price for the 128GB Huawei P30. That's £100 off the £499 retail price, and an excellent deal on this year's flagship from Huawei.

For your reference, here's how much the P30 costs at other retailers:

Retailer Price Delivery  

Price comparison from over 24,000 stores worldwide

If neither of these phones take your fancy, we've rounded up the very best smartphone deals and other top Black Friday tech deals.