100GB SIM-only on the Vodafone network
Every plan with 100GB or more that runs on Vodafone's masts (today: Talkmobile and Lebara), ranked by true monthly cost. By The SimSift team.
Sift's picks
Cheapest 100GB+
Talkmobile on Vodafone 100GB, 12-month contract
£4.98 a month for 3 months, then £9.95. True monthly cost £8.71. Lowest true monthly cost on Vodafone's network. 4G only.
Get dealAdBest with no contract
Talkmobile on Vodafone 100GB, 30-day rolling
£9.95 a month. True monthly cost £9.95. 30-day rolling, so you can leave any month.
Get dealAdBest with 5G
Lebara on Vodafone 100GB, 30-day rolling
£20 a month. True monthly cost £20. Cheapest 100GB+ plan with 5G on Vodafone's network.
Get dealAdUnlimited
Lebara on Vodafone Unlimited, 30-day rolling
£25 a month. True monthly cost £25. Cheapest unlimited plan on Vodafone's network.
Get dealAdEvery 100GB+ plan on Vodafone's network
Cheapest true monthly cost first. Where a plan starts with an intro price, the true cost spreads it over the whole contract. None of these plans has a price rise written into the contract.
| Plan | Price | True monthly cost | £/GB | |
|---|---|---|---|---|
| Talkmobile on Vodafone · 100GB · 12-month contract | £4.98 a month for 3 months, then £9.95 | £8.71 | £0.09 | Get dealAd |
| Talkmobile on Vodafone · 100GB · 30-day rolling | £9.95 a month | £9.95 | £0.10 | Get dealAd |
| Talkmobile on Vodafone · 150GB · 12-month contract | £5.97 a month for 3 months, then £11.95 | £10.46 | £0.07 | Get dealAd |
| Talkmobile on Vodafone · 150GB · 30-day rolling | £11.95 a month | £11.95 | £0.08 | Get dealAd |
| Lebara on Vodafone · 100GB · 30-day rolling · 5G | £20 a month | £20 | £0.20 | Get dealAd |
| Lebara on Vodafone · Unlimited · 30-day rolling · 5G | £25 a month | £25 | – | Get dealAd |
| Lebara on Vodafone · Unlimited · 30-day rolling · 5G | £30 a month | £30 | – | Get dealAd |
Not set on Vodafone?
The cheapest 100GB+ plan on any network we checked is Mozillion 100GB at £11 a month (24-month contract). See all 100GB+ deals.
Questions people ask
What is the cheapest 100GB SIM on the Vodafone network?
Talkmobile 100GB on a 12-month contract at £8.71 a month true cost (£4.98 a month for 3 months, then £9.95), the lowest of the 7 Vodafone-network plans with 100GB or more that we checked (11 November 2026).
Does Talkmobile have 5G?
Not on the plans we checked: they are 4G. If you want 5G on Vodafone's network, Lebara 100GB is £20 a month.
Is the signal the same as Vodafone?
Yes. These networks use Vodafone's masts, so coverage is Vodafone's. Check your postcode on Ofcom's mobile coverage checker (choose Vodafone) before you switch.
Is Vodafone's own 100GB plan here?
No. We only list prices we've checked ourselves, and we don't check Vodafone-branded plans yet. Compare its price with the true monthly cost above before you buy.
Ranked by true monthly cost: everything you pay over the contract, including intro prices ending and any price rise written into the contract, divided by the months (30-day plans are costed over 12 months). Links marked Ad are affiliate links, so SimSift may earn commission at no cost to you. It never changes the order, and plans from networks that pay us nothing are ranked the same way. How we make money · How we rank.