Compare the monthly price, usable data, contract length, underlying network and roaming allowance—not just the biggest number in the advert.
SMARTY’s 70GB rolling plan at £9 was the standout data bargain when checked. 1pMobile’s 50GB for £10 is our value pick for people who want EE-powered coverage and included EU roaming. Choose Lebara’s 30GB for £10 when international minutes matter. Coverage at your home, workplace and regular journeys should decide any close call.
Use these shortcuts to narrow the shortlist. Always confirm the final price and coverage with the provider.
70GB rolling monthly plan
Watch for: coverage varies by postcode, so check Three-powered service where you use your phone most.
Check SMARTY price50GB 30-day plan
Watch for: EU data is capped at 14GB on plans above that allowance, and excess data is charged separately.
Check 1pMobile price60GB one-month plan
Watch for: confirm the roaming fair-use allowance and coverage before switching.
Check iD Mobile price80GB one-month plan
Watch for: it is a smaller consumer brand than the major networks, so compare support preferences as well as price.
Check Mozillion price6GB 18-month plan
Watch for: this headline plan carries an 18-month commitment; compare giffgaff’s rolling plans if flexibility matters.
Check giffgaff price30GB 30-day plan
Watch for: international destinations and roaming limits vary by plan; check the included-country list.
Check Lebara pricePrice snapshots checked 30 July 2026. Provider prices, allowances and promotional terms can change; the provider checkout page is definitive.
| Provider | Price checked | Data | Commitment | Powered by | Best for |
|---|---|---|---|---|---|
| SMARTY | £9/month | 70GB | 1 month | Three | Maximum data per pound |
| 1pMobile | £10/30 days | 50GB | 30 days | EE | Coverage and roaming value |
| iD Mobile | £10/month | 60GB | 1 month | Three | Rollover and flexibility |
| Mozillion | £11/month | 80GB | 1 month | EE | Uncapped-speed flexibility |
| giffgaff | £8/month | 6GB | 18 months | O2 | Light use on O2 |
| Lebara | £10/30 days | 30GB | 30 days | Vodafone | International calls |
A cheaper plan is poor value if coverage struggles at home, work or on your commute. Check the underlying network’s postcode map.
Look at the previous three months in your phone settings or network app. Paying for unused unlimited data rarely makes sense.
Check contract length, annual rises, speed caps, roaming fair-use rules, tethering and what happens when the allowance runs out.
It depends on coverage and data use. SMARTY offered the strongest data-per-pound figure in this shortlist when checked, while 1pMobile suited buyers wanting EE-powered coverage and Lebara was strongest for included international minutes.
Yes. Text PAC to 65075 from your old SIM, then give the code to the new provider. Do not cancel the old service before the transfer completes.
A rolling plan is safer when you are unsure about coverage or your data needs. A longer contract may secure a better price, but check its early-exit and price-change terms first.
No. Providers cannot pay to move up the ranking. Some links may become affiliate links after programme approval, but commercial relationships do not determine inclusion or order.