Our Review:

Opera Mini is designed as a fast and light browser for those who have slow download speeds or high data costs.

As pages are browsed, Opera's servers fetches them and compresses images to provide a faster browsing experience. This does require accepting Opera's ability to protect your privacy, although all the evidence is that they do (and https secure browsing is always encrypted end to end).

It doesn't offer Flash support, but if you are in a poor connection area or want to manage your download then Opera Mini is a good choice as it has most of the features of its bigger brother and runs on practically any device of any age.

The drawback is that some more advanced pages will not render correctly and Flash/video is not an option. You must also accept the privacy implications of retrieving all your data through Opera's servers, although this is unlikely to be a major issue for most.