Each operator's option for a 10-day trip, checked on its own site, next to a live data eSIM price for Vietnam.
See Vietnam eSIM plans →| Operator | Cost | Includes | Slashtel eSIM (same trip) | Difference |
|---|---|---|---|---|
| EE | £50 · 15 days | UK plan allowance for 15 days. | 20GB, 30 days: $25.19 (≈£18.95) | £31.05 less |
| Vodafone UK | £80 · 10 days | £8/day x 10 days | 10GB, 30 days: $15.29 (≈£11.50) | £68.50 less |
| O2 | £26 · 30 days | 0.09765625GB data only | 3GB, 30 days: $5.99 (≈£4.51) | £21.49 less |
| Three | £80 · 10 days | £8/day x 10 days | 10GB, 30 days: $15.29 (≈£11.50) | £68.50 less |
| Sky Mobile | £20 · 10 days | £2/day x 10 days | 10GB, 30 days: $15.29 (≈£11.50) | £8.50 less |
| Lyca Mobile | £10 · 7 days | 1GB | 1GB, 7 days: $2.59 (≈£1.95) | £8.05 less |
| SMARTY | £102.40 · 1 days | 1GB data only | 1GB, 7 days: $2.59 (≈£1.95) | £100.45 less |
Operator prices as listed on ee.co.uk, vodafone.co.uk, o2.co.uk, three.co.uk, static.skyassets.com, lycamobile.co.uk, 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. SMARTY is a trademark of Hutchison 3G UK Limited. Slashtel is not affiliated with SMARTY.
For a 10-day trip, Lyca Mobile at £10. EE: £50. Vodafone UK: £80. O2: £26. Three: £80. Sky Mobile: £20. SMARTY: £102.40. 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 £18.95 (vs EE £50), £11.50 (vs Vodafone UK £80), £4.51 (vs O2 £26), £11.50 (vs Three £80), £11.50 (vs Sky Mobile £20), £1.95 (vs Lyca Mobile £10), £1.95 (vs SMARTY £102.40). 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.