It might be cheaper than the Lumia 920, but the Lumia 820 has the same 1.5GHz dual-core Qualcomm Snapdragon S4 processor, which comes with 1GB of RAM.
Just like on the higher-end smartphone, this processor ensures that everything ticks along nicely, and we noticed no lag when scrolling through homescreens, opening apps and gaming - although the operating system is sadly lacking when it comes to good gaming apps.
The Nokia Lumia 820 comes with an 8MP rear-facing camera, complete with an f/2.2 lens, Carl Zeiss optics and dual-LED flash. Of course, this isn't quite as impressive as the camera found on the more expensive Lumia 920 handset, but it's not all that bad either.
Images taken indoors are impressive for a mid-range phone, and we struggled to see an obvious difference between images taken on the Lumia 920 and Lumia 820 handsets, both of which produced vibrant snaps full of colour and detail.
While it doesn't perform quite as well as the camera on the Lumia 920 in low light conditions, we found that - at least for a phone at this price - the Lumia 820 camera performed really well. Images look detailed enough and colours natural, and we'd say that it's on a par with cameras in the top tier of Android smartphones.
Since this is a Nokia Lumia phone, there's a bunch of camera trickery on board too, as the firm has equipped the handset's camera with various lenses - Panorama, Smart Shoot and Cinemagraph.
Panorama, as you'd expect, lets you take a panoramic photo, while Smart Shoot lets you remove unwanted items from an image, be it somebody walking in the background or an unsightly building. Cinemagraph is our favourite though, as this lets you capture animated GIFs.
Next: Battery, storage, overall