My Mobiles
Chattr

Chattr Review

Single-plan MVNO on O2: unlimited 5G data for fifteen pounds a month, dropping to thirteen pounds from month twelve, with no credit check and no contract.

3.8/5
MVNO
5G Ready
1
Total deals
£15.00/mo
Cheapest SIM plan

Pros & cons

Pros

  • Unlimited 5G data, calls and texts for fifteen pounds a month, falling to fourteen and then thirteen pounds from month twelve
  • No credit check and no long-term contract, so it suits anyone with a thin credit file or who wants to cancel at any time
  • No price rises, and the bill goes down the longer you stay
  • EU roaming like at home on the O2 plan, and hotspot use is included
  • eSIM available, with activation details by email typically within an hour; number transfers within one working day (two if the PAC code arrives after 5pm)
  • A default five pound bill limit caps out-of-plan charges, useful for children's phones

Cons

  • Only one plan: there is no cheaper low-data option for light users
  • Support is by WhatsApp, email, an online form or post, with no phone line listed
  • A small brand with little independent track record compared with the larger MVNOs
  • No handset deals: you need an unlocked phone
  • The account holder must be 18 or over, so a parent signs up for a child's SIM

Chattr Overview

Chattr is a small UK mobile brand run by Kashcow Ltd, a company registered in 2014 and based in Salford, Greater Manchester. Rather than a ladder of data tiers, it sells one SIM-only plan: Freedom One, with unlimited 5G data, unlimited UK calls and texts, and hotspot use included.

The plan is aimed at people who want a predictable bill. There is no credit check, no long-term contract and no price rises, and the monthly price goes down rather than up the longer you stay: fifteen pounds a month to start, fourteen pounds from month six or seven (Chattr's own pages give both) and thirteen pounds from month twelve. Chattr pitches this at parents setting up a first phone for a child, with a parents' hub of guides on its site: an unlimited plan with a five pound bill limit on extras keeps unexpected spending small. The account holder must be 18 or over.

The current plan runs on O2's network, which also means EU roaming at no extra charge. Chattr's own FAQ notes that some customers' SIM cards carry O2 or Vodafone branding, so it is worth checking which network a SIM uses.

Coverage & Speed

Chattr's current plan runs on O2, and Chattr advertises 99% 4G and 5G UK coverage. Coverage and rural reach are therefore O2's: strong in towns and cities, with gaps in some rural areas, so check O2's coverage checker for your postcode. Chattr's FAQ notes that some SIMs carry O2 or Vodafone branding, so check which network your SIM uses before relying on a coverage map.

99%
4G Coverage
Yes
5G Ready

Plans & Pricing

Chattr sells a single SIM-only plan, Freedom One, on a rolling basis with no contract and no credit check. Payment is taken by card when you order, and the next payment falls due a month and three days later to allow time for the SIM to arrive.

Roaming

On the O2 plan you can use your allowance in the EU as you would in the UK, with no roaming charges. Chattr notes that charges may apply on other networks and outside the EU, so check before travelling further afield.

Our Verdict

Chattr does one thing and keeps it simple: unlimited 5G data, calls and texts on O2 for fifteen pounds a month, with no credit check, no contract and no price rises. The bill falling to thirteen pounds from month twelve is a genuine point of difference, since many networks raise rolling prices each April.

The trade-offs come from its size. There is only one plan, so light users pay for data they will not use, and support runs through WhatsApp and email rather than a phone line. For a child's phone, set up by a parent, or for anyone who wants unlimited data without a credit check, it is a straightforward and fairly priced choice.

Quick Specs

Type MVNO
Host O2
Pay Monthly

Chattr does not sell phone contracts or handsets. You bring your own unlocked phone.

SIM Only

Freedom One costs fifteen pounds a month at the start, fourteen pounds a month from month six or seven and thirteen pounds a month from month twelve, for unlimited 5G data, unlimited UK calls and texts, and hotspot use. Chattr's terms also cover plan changes: moving to a bigger plan takes effect straight away with a pro rata charge on the next bill, and moving to a smaller one needs 30 days' notice.

Best Chattr SIM-Only Plans

Direct from Chattr, ranked by monthly cost.

Plan Data Minutes Texts Term Monthly
Freedom One Unlimited 30 Days
Drops to £13 after 12 months
Unlimited Unlimited Unlimited 30-day rolling £15.00 Get plan