The overall Which? test score is made up of the following star ratings, all determined by our rigorous lab tests.
How we test performance
How quickly and smoothly the tablet swipes, rotates and handles everyday tasks and apps, as well as how long it takes to start up after being turned on
How we test screen quality
Viewing angle, colour purity, absence of reflections, clarity in mid-lit and brightly lit rooms and other screen features
How we test sound quality
Sound quality from internal speakers. Using headphones usually vastly improves this.
How we test camera
We test the front and rear cameras for those moments you need your tablet to capture a special memory, or need it for chatting on Skype.
How we test battery
How long a fully charged battery lasts when browsing the web via wi-fi and watching videos. We'd consider eight hours to be the average. We also test how much a tablet charges in 30 minutes.