What a 3GB eSIM actually covers

What 3GB looks like in practice

Data is not consumed evenly. An hour of high-resolution video costs more than a full day of navigation. The table converts 3GB into approximate hours per activity.

Which trip lengths this size fits

Broadly, 3GB suits a 3 to 5 day trip at moderate use. If you use more than that, move up one size or switch to a daily plan that resets full-speed data each day.

• Weekend trips built around maps, chat and photos
• Not enough if you video-call home every evening
• When unsure, add about 15 percent: app updates and photo backup are the two things people forget to count

If this size does not match your trip

Wrong-size purchases usually rest on two assumptions: that hotel Wi-Fi will carry most of the load, and that uploading high-resolution photos is cheap. It is not — it costs about what watching video costs. When unsure, run our estimator against your own habits.

• Heavy use and no desire to think about quota: look at daily plans, or unlimited plans with a clearly stated fair-use policy
• Short trip but daily video calls: move up one size rather than topping up mid-trip
• Crossing borders: check regional plans first so you are not buying several profiles