Telstra's 14-day option is A$25. A Slashtel eSIM with at least 4GB for the same trip is A$18.82. Keep your Telstra number for calls and texts.
Buy the Mexico eSIM →Telstra's 14-day Prepaid 14 Day Travel Pack option costs A$25 (4GB of data, 50 minutes and 50 SMS). A Slashtel data eSIM for Mexico with at least 4GB for 30 days costs $12.89, about A$18.82, so A$6.18 less. The eSIM is data only: keep your Australian SIM in the phone for calls and texts. Telstra prices checked on telstra.com.au on 19 October 2026.
| Telstra | Includes | Slashtel eSIM (same days or more) | Difference |
|---|---|---|---|
| A$30 · 3 daysA$10/day x 3 days | A$10/day x 3 days | 3GB, 15 days: $7.99 (≈A$11.66) | A$18.34 less |
| A$50 · 5 daysA$10/day x 5 days | A$10/day x 5 days | 5GB, 30 days: $12.89 (≈A$18.82) | A$31.18 less |
| A$70 · 7 daysA$10/day x 7 days | A$10/day x 7 days | 10GB, 30 days: $29.89 (≈A$43.64) | A$26.36 less |
| A$100 · 10 daysA$10/day x 10 days | A$10/day x 10 days | 10GB, 30 days: $29.89 (≈A$43.64) | A$56.36 less |
| A$10 · 3 days | 0.4GB, 15 min, 15 SMS | 1GB, 7 days: $4.09 (≈A$5.97) | A$4.03 less |
| A$15 · 7 days | 2GB, 25 min, 25 SMS | 2GB, 15 days: $7.39 (≈A$10.79) | A$4.21 less |
| A$25 · 14 days | 4GB, 50 min, 50 SMS | 5GB, 30 days: $12.89 (≈A$18.82) | A$6.18 less |
Telstra prices from telstra.com.au, checked 19 October 2026; Telstra's options include calls as well as data. Where Telstra charges by the day, we compare an eSIM with at least 1GB a day. Slashtel prices are live, in US dollars, converted at 1.46 per $1 (daily reference rate); your card is charged in your own currency at checkout. Telstra is a trademark of Telstra Corporation Limited. Slashtel is not affiliated with Telstra.
Yes, Telstra roams in Mexico, at A$25 for 14 days on its Prepaid 14 Day Travel Pack option (checked 19 October 2026). A travel eSIM gives you local data there instead, while your Telstra number stays active for calls and texts.
For data, the eSIM. Telstra's 14-day option is A$25; a Slashtel eSIM with 5GB for 30 days is $12.89 (about A$18.82). Telstra's option also includes calls, which the eSIM does not.
Yes. The eSIM is added alongside your Telstra SIM, so your number stays in the phone for calls and texts such as bank codes. Set the eSIM as the line for mobile data and turn data roaming off on the Telstra line. Whether Telstra charges for anything you receive abroad depends on your plan, so check with Telstra before you travel.
No. It is data only, with no phone number. You can call on WhatsApp, FaceTime or similar apps over the eSIM data.
Most iPhones from the XS onwards, Google Pixel 3 and later, and recent Samsung Galaxy S, Z and A models, provided the phone is not carrier-locked. Check under Settings for an option to add an eSIM.
Install it at home before you fly, while you have Wi-Fi, and switch mobile data to it when you land.