Each operator's option for a 10-day trip, checked on its own site, next to a live data eSIM price for South Korea.
See South Korea eSIM plans →| Operator | Cost | Includes | Slashtel eSIM (same trip) | Difference |
|---|---|---|---|---|
| EE | £50 · 15 days | UK plan allowance for 15 days. | 20GB, 30 days: $16.09 (≈£12.11) | £37.89 less |
| Vodafone UK | £80 · 10 days | £8/day x 10 days | 10GB, 30 days: $10.89 (≈£8.19) | £71.81 less |
| O2 | £26 · 30 days | 0.09765625GB data only | 3GB, 30 days: $4.69 (≈£3.53) | £22.47 less |
| Three | £80 · 10 days | £8/day x 10 days | 10GB, 30 days: $10.89 (≈£8.19) | £71.81 less |
| Sky Mobile | £20 · 10 days | £2/day x 10 days | 10GB, 30 days: $10.89 (≈£8.19) | £11.81 less |
| Lyca Mobile | £5 · 7 days | 1GB | 1GB, 7 days: $2.59 (≈£1.95) | £3.05 less |
| Tesco Mobile | £5120 · 1 days | 1GB data only | 1GB, 7 days: $2.59 (≈£1.95) | £5118.05 less |
| SMARTY | £5120 · 1 days | 1GB data only | 1GB, 7 days: $2.59 (≈£1.95) | £5118.05 less |
Operator prices as listed on ee.co.uk, vodafone.co.uk, o2.co.uk, three.co.uk, static.skyassets.com, lycamobile.co.uk, tescomobile.com, cdn.smarty.co.uk on 26 October 2026; they include calls as well as data. Where an operator charges by the day, we compare an eSIM with at least 1GB a day. Slashtel prices are live in US dollars, converted at 0.75 per $1. EE is a trademark of EE Limited (BT Group). Slashtel is not affiliated with EE. Vodafone is a trademark of Vodafone Group Plc. Slashtel is not affiliated with Vodafone UK. O2 is a trademark of Telefonica UK Limited (Virgin Media O2). Slashtel is not affiliated with O2. Three is a trademark of Hutchison 3G UK Limited. Slashtel is not affiliated with Three. Sky Mobile is a trademark of Sky UK Limited. Slashtel is not affiliated with Sky Mobile. Lyca Mobile is a trademark of Lycamobile UK Limited. Slashtel is not affiliated with Lyca Mobile. Tesco Mobile is a trademark of Tesco Mobile Limited. Slashtel is not affiliated with Tesco Mobile. SMARTY is a trademark of Hutchison 3G UK Limited. Slashtel is not affiliated with SMARTY.
For a 10-day trip, Lyca Mobile at £5. EE: £50. Vodafone UK: £80. O2: £26. Three: £80. Sky Mobile: £20. Tesco Mobile: £5120. SMARTY: £5120. Options differ in calls and data allowances, so compare what you will use.
For data, yes against each option we list: a Slashtel eSIM for the same trip costs £12.11 (vs EE £50), £8.19 (vs Vodafone UK £80), £3.53 (vs O2 £26), £8.19 (vs Three £80), £8.19 (vs Sky Mobile £20), £1.95 (vs Lyca Mobile £5), £1.95 (vs Tesco Mobile £5120), £1.95 (vs SMARTY £5120). Operator options also include calls; the eSIM is data only.
Yes. Keep your UK SIM in the phone for calls and texts such as bank codes, and use the eSIM for mobile data.