New from Mozillion
Kill Your Bill.
Get a free phone bill.
Every month.
Use our app at over 200 leading brands for the spending you already do. Every time, every month, get an instant reward to shrink, or even kill your phone bill.
200+ leading UK brands and counting. New partners added monthly.
How It Works
Four steps to £0 bills.
No complicated loyalty programs. No gimmicks. Just instant savings from everyday shopping.
Pick your plan
Choose a Mozillion plan with Kill Your Bill included, and download our Mozillion app.
Buy an eGift card
Use your Mozillion app to purchase an eGift card from 200+ brands — groceries, fashion, travel and more.
Pay with your eGift card
Use your unique code to pay for your purchase online, or at the till in-store.
Watch your bill disappear
An instant reward shrinks - or even kills - your next phone bill.
Kill Your Bill.
£15 a month.
Every month.
Mozillion plan.
Every plan includes Kill Your Bill rewards.
using our app.
30 seconds.
Save up to 100%.
deserves to die.
Bill Example
Kill Your Bill
at the Till.
Online or in-store, here's an example of shopping away your next Mozillion phone bill.
Anne's monthly shop
Your £15 bill this month
£0.00
+£1.23 rolls over to next month
Spend £0 extra.
Save up to 100%.
Kill Your Bill doesn't ask you to change your habits. You're already spending at these retailers - now that spending works harder by chipping away at your bill.
And here's the kicker: unused rewards carry over to the next billing cycle. Even in a quiet month, savings keep stacking.
Earn at 200+ brands
...with more brands added every month.
All Kill Your Bill SIM only plans include, unlimited calls & texts, EU roaming, and uncapped 5G speeds on the UK's Best Network 2025.
- Kill Your Bill rewards
- Unlimited calls & texts
- Uncapped 5G speeds
- Free EU roaming
- No mid-contract price rises
- Kill Your Bill rewards
- Unlimited calls & texts
- Uncapped 5G speeds
- Free EU roaming
- No mid-contract price rises
Time to make a killing!
Download the free Mozillion app here and get started instantly.
Got Questions?
Kill Your Bill FAQs
Does joining Kill Your Bill cost me anything?
All you need is a Kill Your Bill Sim-Only plan (see above). Then just shop like you do every week with our partners, and get an instant cash reward applied to your Mozillion bill every time.
How do I get my Cash Rewards?
When you're about to pay, open the app, find your chosen brand, and follow the instructions. Your cash reward is instantly credited to your monthly phone bill.
Do I have to go to a shop?
No — Kill Your Bill is for online as well as personal shoppers.
Why do I buy a brand's eGift card?
It has a QR code on it, which you scan (in store) or enter at the checkout (if shopping online). As soon as you buy any gift cards you receive your cash reward direct to your phone bill, so feel free to buy them in advance.
Can I make gifts to family and friends?
Absolutely. Through the Mozillion app, you can buy and send store gift cards as presents — and receive even more instant cash rewards instantly to shrink or Kill Your Bill.
What if my cash rewards come to more than my next Mozillion bill?
Your monthly bill is absolutely free, and we roll over any credit balance to your next bill. So you never lose out on rewards you've earned.
How do I know how much I'm killing my bill by?
The app states the cash reward on the amount you are spending. Your dashboard gives you a running total of how you're shrinking — or even killing — your bill.
What if I want to return a purchase I've made?
Just contact the brand or service directly in the usual way. Note: refunds are not available on the gift card purchase.
I already have a Mozillion SIM-Only plan. How do I join Kill Your Bill?
If it's a pay monthly SIM-only plan you can upgrade to one of the Kill Your Bill plans. Even mid-contract. Upgrade your plan in your dashboard.