The Which? Best Buy award is given to
products with high total test scores that perform consistently well in
our rigorous lab tests and excel in all key areas.
We award the Energy Saver logo to
products that our testing shows are very energy efficient, meaning
they'll cost you less to run.
The Which? Don't Buy logo alerts you
to the products that performed extremely poorly in one or more key
areas of our tests.
Overall performance when browsing the web - some older models do not have a rating here as they were tested under an old test programme
Feel and response of screen
How long a fully charged battery lasts when browsing the web via wi-fi
How quickly it copies files over wi-fi and how smoothly it streams video and music
Whether there is a SIM card slot for connecting to a 3G network
Internal storage (GB)
This tells you the size of the internal memory. A large internal memory helps you store more videos and music. You can often expand it with a memory card though, either SD or Micro SD usually. Some of the internal memory is taken up by the operating system and pre-installed apps.
Diagonal size of the screen
We check the availability of Best Buys at major high-street retailers and online. With other models, we show their availability at online retailers (many of these products will also be available in larger high-street chains or at independent retailers).