What a child's phone really costs, over three years.
A simple phone is bought once; a smartphone on contract is paid for every month. Pick a handset and a SIM to see the total over one, two and three years, against a flagship smartphone on a typical £35 a month contract (the figure from our pricing guide).
Prices are Knock's listed figures, checked at the retailer on publish day and best-effort after that, so confirm the figure before you buy. The smartphone comparison uses a flat £35 a month, the typical UK contract figure on our pricing guide; many cost more. A SIM-only deal is the same whichever simple phone you choose, because the phone is bought outright.
Decided on the maths? The ninety-second picker matches a phone to your child, the SIM page ranks the four above, and the full ladder is on the pricing guide.