Pricing, in plain English
How much does a simple phone for a child cost in the UK?
Between £30 and £400, depending on what you want it to do. The Knock Phone sits at £79, the middle of the range, because it is built around the Nokia 3210 with the SIM, the script and the box included.
The four price bands
Where every UK basic phone for a child sits.
| Band | Price | What you get |
|---|---|---|
| Bare-bones 2G | £25 to £40 | Calls, texts, no real keyboard. Argos own-brand, Alcatel 1066, the cheapest Nokia 105 variants. |
| Considered 4G basic | £75 to £130 | Calls, texts, FM radio, Snake, 4G with VoLTE. The Nokia 3210 (2024), Nokia 8210 (refurb), Nokia 235. |
| The Knock Phone | £79 | The Nokia 3210, plus a pre-activated UK SIM, the printed parent script, the school comms template, and the box. UK delivery included. |
| Design-led basic | £295 to £450 | Punkt MP02 (£295 to £349), Light Phone III (£399+, imported from the US with VAT and a wait). |
What drives the price
Six things that make the price go up, four that bring it down.
Drivers up
- 4G with VoLTE. Most UK networks shut down 2G by 2033. A phone with VoLTE costs £20 to £40 more but works for the phone's actual life.
- Considered industrial design. Punkt and Light Phone charge for the design, materials and feel. Worth it if the design is the point.
- Built-in messaging app. The Punkt MP02 includes Signal. The Light Phone has its own messaging. Adds £100 to £200 to the price versus a pure dumbphone.
- Manufacturer support and warranty length. Nokia/HMD ships a 24-month warranty as standard. Cheaper handsets often don't.
- UK network certification. The Nokia 3210 has been tested on EE, O2, Vodafone and Three. Some grey-import handsets have not.
- A SIM bundled in. Buying a SIM separately is £5 to £15 per month. Bundling one for the first month adds £10 to £15 to the kit price.
Drivers down
- Refurbished, not new. A refurbished Nokia 3210 is £55 to £65 instead of £75 to £90. Back Market sells these with a 12-month warranty.
- 2G-only or 3G-only chipset. Sub-£40 handsets often skip 4G. Fine for now, dead in five years. We don't recommend this.
- SIM-free, no contract. All basic phones we recommend are unlocked. There is no carrier subsidy because there is no carrier deal.
- Sold direct. Buying from a brand cuts out the £10 to £20 retailer margin. The Knock Phone is £79 because we sell it ourselves.
Watch for
Hidden costs that don't always make the price tag.
- SIM auto-renewal at a higher rate. Some PAYG SIMs roll to a higher monthly bundle after the first month. The EE SIM in the Knock Phone does not.
- Manufacturer cases at £20 to £40. Optional. Most children don't use one. We include a soft sage cotton lanyard, which is what they actually want.
- Replacement chargers. The Nokia 3210 uses USB-C, so any modern charger works. If a retailer sells you a £15 "proprietary" charger, decline.
- MicroSD cards. Optional. £8 to £15 for a 16GB card if you want to load music or radio recordings.
- Imported phones with VAT and customs. The Light Phone III ships from the US. Add roughly 20% VAT plus a £12 to £15 customs handling fee on top of the sticker price.
Lifetime cost
Two years of phone, side by side.
| Option | Year 1 | Year 2 | Two-year total |
|---|---|---|---|
| iPhone 15 on a 24-month contract (£35/m) | £420 | £420 | £840 |
| Refurbished iPhone SE + Smarty SIM (£6/m) | £169 + £72 = £241 | £72 | £313 |
| Pinwheel Plus + £13.99/m portal + SIM (£6/m) | £279 + £240 = £519 | £240 | £759 |
| Knock Phone (£79, first month SIM included, then £6/m EE) | £79 + £66 = £145 | £72 | £217 |
| Punkt MP02 + Smarty SIM (£10/m unlimited) | £295 + £120 = £415 | £120 | £535 |
Numbers are checked against UK retail prices on 26 May 2026 and refreshed every three months.
Eight questions parents ask about price
Pricing, asked plainly.
How much does a simple phone for a child cost in the UK?
Between £30 and £400, depending on what you want it to do. A bare-bones 2G handset is £25 to £40. A 4G basic phone like the Nokia 3210 sits at £75 to £90. A design-led basic phone like the Punkt MP02 runs £295 to £349. The Knock Phone is £79 because it is built around the Nokia 3210, with the SIM, the script and the box included.
How much does the Knock Phone cost?
£79 including UK delivery, a pre-activated SIM with 1GB of data, 200 minutes and 200 texts on EE for the first month, the printed parent script, the school comms template, and the box. There is no contract and no monthly fee from Knock. After the first month, top up directly with EE.
Why is there a price difference between basic phones?
Three things. The chipset (2G versus 4G with VoLTE), the design (rebadged generic versus considered industrial design), and the network certification (whether the manufacturer has put the phone through UK network compatibility testing). The Nokia 3210 sits in the middle: 4G, network-certified, properly designed at a fair price.
Are there hidden costs?
Not from Knock. From elsewhere, watch for: a SIM that auto-renews at a higher rate after month one, optional manufacturer cases at £20 to £40, replacement chargers (the 3210 uses USB-C so any modern charger works), and microSD cards if you want more music storage. We list everything that costs money on the product page before you click buy.
Do you offer financing?
Not at this price point. £79 is set to be payable in one go without needing instalments. If you genuinely cannot put £79 down, email hello@knockphone.co.uk and we will work something out without involving a credit company.
Why is the Knock Phone cheaper than a Pinwheel or a Light Phone?
Different category. Pinwheel (£279) and the Light Phone III (£399) are software-led products with custom operating systems and ongoing subscriptions. The Knock Phone is the considered version of a hardware-led basic phone, sold direct so we can include the SIM and the script for less than the parts cost on Amazon.
What does the SIM cost after the first month?
You decide. The SIM is on EE PAYG. After the first month, top up as needed from £5. Most families we have spoken to spend £5 to £10 a month on a basic phone like this.
How does the Knock Phone compare to the long-term cost of an iPhone?
An iPhone 15 on a 24-month contract at £35 a month is £840. A used iPhone SE plus a £6 Smarty SIM is around £315 over 24 months. The Knock Phone plus a £6 monthly top-up after month one is £79 + (23 × £6) = £217 over 24 months. The cheapest sensible smartphone path is the refurbished iPhone SE. The cheapest sensible non-smartphone path is the Knock Phone.
Order the Knock Phone, £79.
Free UK delivery, 30-day no-quibble returns, one-year family guarantee. The SIM, the script and the box are included in the price.