Pick where you are going, how many days and how you use your phone. You get an estimate of the mobile data your trip may need, and a link to the plans for that destination.
How we estimate
We use a simple daily figure for each way of using your phone: 0.3 GB for light use, 0.8 GB for everyday use and 2.5 GB for heavy use. We multiply it by the number of days, add 20% headroom and round up to a whole GB.
This is a rule of thumb, not a guarantee. Real use depends on your phone, your apps and your settings. Check the data allowance and validity shown on each plan before you buy.