Chattr promo code — 75% off your first month: unlimited for £3.75

Chattr at a glance

Chattr is a young, online-only UK mobile brand run by Kashcow Ltd, a company registered in England under number 08889583 with its registered address at 189 Chapel Street, Salford. It sells one SIM-only plan with no contract, no credit check and no price hikes, and it describes itself plainly as a new company dedicated to the best prices possible, with customer care answered by people rather than scripts.

Its one plan is Freedom One: unlimited data that gets cheaper the longer you keep it. Alongside it sit a Parents Hub aimed at families buying a child's first SIM, and a travel eSIM that Chattr has announced as coming soon, with 25% of its profits going to nature.

Chattr sells plans on the O2 and Vodafone networks. Its FAQ is candid about it: the contract is with Chattr, but customers can be on different networks, so the SIM card itself may say O2 or Vodafone. Chattr quotes 99% 4G and 5G UK coverage, and O2-network customers get O2 Priority — discounts at high-street brands, prize draws and priority tickets to events.

The code, and the link

Chattr promo code: HONEST75 Deal link: honestcodes.co.uk/go/chattr

HONEST75 is exclusive to HonestCodes and is not listed on any voucher or coupon site. It takes 75% off your first month on Freedom One. Open the link, pick Freedom One and enter HONEST75 in the promo code box at checkout. Freedom One includes unlimited UK calls and texts:

Plan	Data	First month with HONEST75	Then
Freedom One	Unlimited 5G	£3.75	£15, falling to £13

Freedom One is the one to take: unlimited data for £3.75 in month one, then £15 — less than most networks charge for a capped allowance — and unlike most networks, its price goes down the longer you keep it. HonestCodes checked it against Chattr's own checkout on 24 September 2026: 75% off, first month only, and it works in capitals or lower case.

Freedom One: the plan that rewards staying

Most networks put prices up every April. Chattr turns that round. Freedom One costs £15 a month at the start, drops to a £14 loyalty price, then settles at a £13 VIP price from month 12 — and stays there.

Stage	Monthly price
Standard price (from month 1)	£15
Loyalty reward	£14
VIP price (month 12 onwards)	£13

Chattr's own pages differ on exactly when the loyalty price begins: its homepage shows £15 for months 1 to 5 and £14 from month 6, while its Parents Hub shows £15 for months 1 to 6 and £14 from month 7. Both agree on £13 from month 12. Either way, the price only moves down.

Unlimited on Freedom One means unlimited 5G data for everything — streaming, hotspotting, gaming — alongside unlimited UK calls and texts and European roaming. Chattr's terms reserve the right to manage speeds at times of unusually high network demand, as every network does.

How ordering works

Chattr is online-only, and the order runs in three short steps:

• Choose Freedom One on the plans page and tap Get Your SIM.
• Create your account. Confirm you are 18 or over and select your phone's make and model — Chattr sends an eSIM by default, because most modern phones support it, and uses your model to check compatibility.
• Activate. Physical SIMs usually arrive in one to three days. Scan the QR code to reach Chattr's activation page, log in and enter the last four digits of the SIM serial number.

Payment is taken when you order, and your next payment is due one month plus three days later, giving you a grace period to receive and activate the SIM before the plan clock really starts.

Who can order

Chattr sells to new customers aged 18 or over ordering a SIM online. With HONEST75 the first month is charged at 25% of the standard price; from month two you pay the standard price, and Freedom One's loyalty and VIP prices then apply automatically. You need an unlocked phone; Chattr's FAQ notes that unlocking a phone from another network typically costs around £10 to £15 at a retailer.

Bill control, cancelling and switching

Three details in Chattr's terms matter for anyone wary of mobile bills:

• A £5 bill limit is set on every account by default, so out-of-plan charges cannot run away without you knowing. If you hit it, you add a bolt-on to carry on.
• Cancel by switching off auto-renew. Turn auto-renewal off in your account and the plan simply ends after the current month. There is no exit fee because there is no contract.
• A 14-day cooling-off window. Cancel within 14 days of activating the SIM and Chattr refunds the plan minus the days used.

Keeping your number works with a PAC from your current network — text PAC to 65075 — added when you activate. Leaving later is just as simple: email Chattr for a PAC, which it issues within one working day, and it moves numbers within one working day, Monday to Friday.

Roaming: 43 European destinations

Chattr's terms let you roam like at home in 43 destinations, using your UK data, calls and texts as normal. That covers every EU country, including the Canary Islands, Madeira, the Balearics and France's overseas departments, plus Iceland, Norway and Liechtenstein. Chattr also includes a Zone 2 most networks leave out: Guernsey, Jersey, the Isle of Man, the Faroe Islands, San Marino and Switzerland.

Roaming covers calls and texts to UK numbers, calls within the zone you are in, receiving calls, freephone and emergency numbers. A fair-use policy applies to data abroad, and calls from the UK to international numbers are charged separately.

A SIM for children and teenagers

Chattr has built a Parents Hub around one argument: unlimited data prevents bill shock. It publishes its own estimates of what children's favourite apps use — around 1GB an hour for TikTok, about 1.5GB an hour for YouTube, roughly 600MB an hour for gaming and around 3GB an hour for video streaming — which works out at 18GB to 90GB a month for an hour a day. It adds a teen data calculator, a child phone-bill calculator and guides to phones by age.

For parents, Freedom One's unlimited allowance, the £5 default bill limit and the absence of a contract make a predictable combination. Chattr requires the account holder to be 18 or over, so a parent orders the SIM for the child.

How much data do you actually need?

Sizing up Freedom One comes down to one number, and Chattr publishes its own rule-of-thumb figures for the apps that use the most. Taking an hour a day of each, every day for a month:

Activity	Chattr's estimate per hour	An hour a day for a month	Chattr plan that covers it
Gaming	About 600MB	About 18GB	Freedom One (£15)
TikTok and short video	About 1GB	About 30GB	Freedom One (£15)
YouTube	About 1.5GB	About 45GB	Freedom One (£15)
Film and TV streaming	About 3GB	About 90GB	Freedom One (£15)

Messaging, email, maps and music use far less, which is why anyone who mostly uses Wi-Fi at home and work uses little of it. The table also shows why Chattr leads with unlimited: one hour a day of video already adds up to tens of gigabytes, and Freedom One's loyalty price brings £15 down to £13.

Data used while hotspotting counts in the same way, so anyone sharing their phone's connection with a laptop should size up rather than down.

Chattr Travel

Chattr has announced Chattr Travel, a travel eSIM priced from £2.50, which it says will work in more than 200 countries with no roaming fees and a quick setup — and with 25% of its profits going to nature. On 23 September 2026 it was listed as coming soon, with a register-your-interest form on Chattr's site. For travel inside Europe, the main Chattr plans already roam like at home in 43 destinations.

Chattr next to Lebara and 1pMobile

All three are no-contract SIM-only networks on HonestCodes with current, verified offers. What separates them is the host network, the unlimited price and the shape of the new-customer deal.

	Chattr	Lebara	1pMobile
Network	O2 or Vodafone	Vodafone	EE
New-customer deal	75% off month one with HONEST75 — unlimited for £3.75	Plans from £5; 10% off every 12-month plan	SIM £5 instead of £10, with £10 of credit
Unlimited data, standard price	£15, falling to £13	£25	£25 (extra SIMs £12.50)
Credit check	None	None	None
Roaming included	43 European destinations	EU and India, up to 30GB	46 European destinations
Distinctive feature	Loyalty pricing that falls over time	International minutes on every plan	1p-a-minute pay-as-you-go

Lebara and 1pMobile figures come from HonestCodes' own verified entries. On unlimited data, Chattr's standard £15 — and £13 after a year — is the lowest of the three.

Is there a Chattr promo code or discount code?

Yes, and it is exclusive to HonestCodes: HONEST75 takes 75% off your first month on Freedom One. After that first month, Freedom One gets cheaper the longer you stay.

What people search for	What actually exists
Chattr promo code	HONEST75: 75% off your first month, through our Chattr link
Chattr discount code	HONEST75 at checkout, then the built-in loyalty price: £14, then £13 from month 12 on Freedom One
Chattr Freedom One deal	Unlimited 5G data, calls and texts for £15, falling to £13
Chattr O2 Priority	Included for customers on the O2 network
Chattr travel SIM	Announced as coming soon, from £2.50

Why this link is the one to use

Coupon pages list "Chattr codes" without an expiry date, which is how people end up typing a code that died months ago. This page does the opposite:

• HONEST75 is exclusive to HonestCodes and was checked against Chattr's own checkout.
• Every plan price, the loyalty schedule, the roaming list and the account rules are read from Chattr's own pages and terms on 23 September 2026, including the point where two of Chattr's pages differ.
• The link is tested daily and lands on Chattr's live plans page.
• The entry is re-verified monthly, and the date at the top of this page is the last full check.
• The full link is printed in plain text, ready to copy, tap or quote.

Source documentation

• Bill limit, auto-renew, cancellation, payment timing and roaming destinations — Chattr's Terms and Conditions at chattr.co.uk/terms.
• The HONEST75 code — exclusive to HonestCodes from 24 September 2026, checked against Chattr's checkout the same day.
• Plans and prices — Chattr's plans page and homepage at chattr.co.uk, read 23 September 2026 and re-checked 24 September 2026.
• Freedom One loyalty pricing — Chattr's homepage (months 1–5, 6–11, 12+) and Parents Hub (months 1–6, 7–11, 12+).
• Networks, unlocking and bolt-ons — the FAQ on Chattr's plans page.
• Ordering and activation — Chattr's How to Get Started page and checkout.
• Data-usage estimates — Chattr's Parents Hub at chattr.co.uk/parents.
• Switching away — Chattr's PAC codes page.
• Company details — Chattr's site footer and terms.

Chattr sets its prices and can change them without notice. HonestCodes link-tests this deal daily and re-reads Chattr's plan pages on the date shown at the top of this page.