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Who wouldn’t fancy a free month?

Give a free month,
get a free month.

SMARTY is a new SIM-only mobile network that’s built to be simple and honest. Join us, refer-a-friend and you’ll both get a free month. Refer 12 friends and get a whole year free.

How to get your free months:

Order your SIM

Pick a plan below, order your SIM, and activate it when it arrives.

Invite friends

As soon as your SIM arrives you can invite as many friends as you like using your unique sharing link.

Get free months

For every friend that joins SMARTY using your sharing link you get a free month (they get one too).


At the end of the month, we take your unused data, turn it into money, and refund it off your next bill.

More about why we’re different

All the data you need for less

Data discount plans

Get money back for unused data

All plans include

  • 1 month plan, cancel anytime

  • Unlimited calls & texts

  • Unrestricted tethering in the UK

  • No credit check

  • Fast 4G & 3G data

  • No speed caps

All plans include WiFi Calling to supercharge your signal


  • uSwitch Award - Best Value SIM Only Winner 2020
  • uSwitch Award - Best Value SIM Only 2019
  • uSwitch Award - Best PAYG Network 2019

Featured in

  • FinancialTimes
  • TechRadar
  • uSwitch
  • HuffingtonPost
  • ShortList


These FAQs are about out referrals scheme only. View FAQs about our network.

View the full terms and conditions of our referral scheme.