Best refurbished phones under £400

Sift's picks under £400

Every refurbished phone under £400

Cheapest listing of each model from Back Market's feed, cheapest first. The last column adds Mozillion 30GB (£7 a month), our cheapest checked plan with 30GB or more, over 24 months.

How we work out the true monthly cost

We add the phone's price to everything you'd pay for the SIM plan over 24 months: any introductory price, the price after it, and any yearly rise the network has published for contracts. Then we divide by 24. Rolling plans are counted at today's price for all 24 months, because the network can change it. Nothing here is a guess: if a price is more than 48 hours old, we don't show it. See how we rank.

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Links marked Ad are affiliate links: SimSift may earn commission if you buy, at no extra cost to you. It never changes what we recommend or the order we show. How we make money.

Phone prices from Back Market's official Awin product feed, checked 4 Nov 2026, 16:38 UK time. SIM prices checked 4 Nov 2026, 16:38 UK time on each network's own feed or site. Prices change often: the price on the retailer's site is the one you pay. How we check prices.

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