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Smarty vs giffgaff: Which SIM-Only Deal is Best in 2025?

Comparing Smarty and giffgaff to help you choose the best SIM-only deal. Both offer flexible, contract-free plans, but which network comes out on top for value, coverage, and features?

Winner

Smarty Takes the Crown

Based on overall value, features, and customer satisfaction, Smarty edges ahead. But read on - the right choice depends on your specific needs.

Network Coverage

Smarty

Smarty runs on Three's network, offering 5G in major cities and strong 4G coverage across 99% of the UK.

giffgaff

giffgaff uses O2's network, which has slightly better rural coverage and award-winning reliability.

Winner:giffgaff

Pricing & Value

Smarty

Smarty offers unlimited data from £10/month and gives you money back on unused data - unique in the market.

giffgaff

giffgaff's goodybags start from £6/month with always-on data that never runs out, even after your allowance.

Winner:Smarty

Data Features

Smarty

Get cashback on unused data each month. If you only use 5GB of your 10GB plan, you get money back.

giffgaff

Always-on data means you never lose connection, though speeds slow after your allowance is used.

Winner:Smarty

Customer Support

Smarty

Live chat support available during business hours, plus comprehensive online help center.

giffgaff

Community-powered support with forum members helping 24/7. Unique approach, but can be slower.

Winner:Smarty

Current Deals

Smarty Deals

Best Overall
Smarty

Unlimited Data – £10/month

£10/month

30-day rolling · No contract

  • Unlimited data, calls & texts
  • 5G included at no extra cost
  • EU roaming included
View Deal on Smarty

We may earn a commission if you switch, at no extra cost to you.

Smarty

6GB Starter Plan

£6/month

30-day rolling · No contract

  • Perfect for casual users
  • Money back on unused data
  • No commitment
View Deal on Smarty

We may earn a commission if you switch, at no extra cost to you.

giffgaff Deals

Giffgaff

25GB Always-On Data

£10/month

30-day rolling · No contract

  • Always-on data (never runs out)
  • Unlimited UK calls & texts
  • Community support 24/7
View Deal on Giffgaff

We may earn a commission if you switch, at no extra cost to you.

Frequently Asked Questions

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