The Nokia Lumia 820 isn't meant as the Finnish firm's flagship handset - that accolade belongs to the Lumia 920 - but this colourful Windows Phone 8 smartphone is impressive nonetheless.
The Nokia Lumia 820 carries plenty of unique features and costs less than the Lumia 920, making it a tempting offer for anyone considering making the move to Microsoft's OS.
It goes without saying Nokia is pinning a lot of hope on this phone. Apple's iPhone 5 and Samsung's Galaxy S3 are kicking up dust both in terms of sales and as standard bearers for their respective operating systems.
Nokia Lumia 820 review
In the UK, you can pick the Lumia 820 up free from £25 per month on Vodafone, albeit with only 300 minutes and 250MB of data, on a 24 month contract. Alternatively the SIM-free version of the phone will set you back an entirely reasonable £380.
Australians can enjoy the phone for AUD$649 outright, or for $0 up front on a $50 plan over 24 months. Optus customers - who get the benefit of 4G - can grab the handset for $0 up front on a $35 plan.
There's a reasonable amount of power on offer at that price thanks to the dual core 1.5Ghz Snapdragon processor and Adreno 225 GPU. Windows OS is a typically smooth operating system the Lumia 820 runs off 1GB of RAM which keeps things nice and slick.
Nokia Lumia 820 review
Outwardly though, this is a different-looking phone from the Lumia 920. The unibody is gone, replaced with a removable plastic back that lets you change the colour of the handset. Our review model came with a bright yellow rear cover, although red, black, magenta, blue, white and grey are also available.
Hopefully over time third-party designs will become available allowing you to customise your handset just like the Nokia's of old.
Nokia Lumia 820 review
Unfortunately, the back cover is also where we run into our first problem with the Lumia 820. Basically you'll need fingernails like Wolverine to claw the cover back from the body of the phone. It took the TechRadar team several amusing minutes trying to remove the casing in order to insert our SIM to begin using the phone.
Once you're happy with the casing, and you've spent the required ten minutes struggling to get your Micro SIM installed, you'll be able to sit back and notice that at 160g, the Lumia 820 isn't as heavy as its bigger brother.
Nokia Lumia 820 review
It's also got slightly smaller dimensions - but at 124 x 69 x 10mm with a 4.3-inch AMOLED screen we wouldn't go so far as to call it tiny.
The curved sides and rounded corners of the handset make it comfortable to hold and certainly give it a friendly appearance. We could easily wrap our hand around the Lumia 820 and access the physical buttons, which are all located along the right hand side of the phone.
Nokia Lumia 820 review
You get a volume rocker at the top, followed by the power on/off button in the centre and then a physical camera shutter button - something we're always happy to see on a smartphone. All the buttons can be easily flicked with either the thumb of your right hand or the fingers of your left, depending on which you use to hold the phone.
One point though, the plastic backing on the Lumia 820 is completely smooth which looks nice but doesn't offer any great amount of grip.
Nokia Lumia 820 review
The front of the phone is minimal in terms of design, with just the Nokia lettering at the top and the three standard Windows phone soft touch keys at the bottom. While the 4.3-inch AMOLED, 800 x 480 screen is up to Nokia's usual high standard, there's definitely a noticeable black bezel around the display.
Usually this doesn't cause too much concern, but given the near edge-to-edge displays of handsets like the Motorola Razr i and the iPhone 5, it's becoming more of an issue.
Nokia Lumia 820 review
The display isn't as large as other smartphones out there. It won't compete with the 4.7-inch HTC One X+, the 4.8-inch Galaxy S3 or the 4.5-inch Lumia 920, for screen real estate but compromises with portability.
Screen size itself is becoming far more of a subjective issue anyway with a device on offer at pretty much every stage from pocket-friendly smartphone to sofa-surfing tablet.
Nokia Lumia 820 review
The top and bottom of the Lumia 820 are given over to the 3.5mm headphone jack and the micro-USB charging and connection port respectively. There's also a small speaker to the right of the micro-USB port which we felt didn't look as nicely uniform as the dual speaker vents on the Lumia 920.
Overall build quality is as good as you would expect given Nokia's long history of mobile phone craftsmanship. While we would expect the casing to scratch fairly easily if this phone took a tumble, there's a reassuring heft to the handset that suggests the internal workings would stay protected.
Nokia Lumia 820 review
Importantly then, first impressions are quite good. It's a good looking, feature-packed phone from a pair of companies that really have something to prove this time around. So, how does it fare when we dip below the surface?

 Full Spesification's For  Nokia Lumia 820

General 2G Network GSM 850 / 900 / 1800 / 1900
3G Network HSDPA 850 / 900 / 1900 / 2100
4G Network LTE 800 / 900 / 1800 / 2100 / 2600
SIM Micro-SIM
Announced 2012, September
Status Available. Released 2012, November
Body Dimensions 123.8 x 68.5 x 9.9 mm, 83.5 cc (4.87 x 2.70 x 0.39 in)
Weight 160 g (5.64 oz)
Display Type AMOLED capacitive touchscreen, 16M colors
Size 480 x 800 pixels, 4.3 inches (~217 ppi pixel density)
Multitouch Yes
  - Nokia ClearBlack display
Sound Alert types Vibration; MP3, WAV ringtones
Loudspeaker Yes
3.5mm jack Yes
  - Dolby Headphone sound enhancement
Memory Card slot microSD, up to 64 GB
Internal 8 GB, 1 GB RAM
Data GPRS Class 12 (4+1/3+2/2+3/1+4 slots), 32 - 48 kbps
EDGE Class 12
Speed HSDPA, 42 Mbps; HSUPA, 5.76 Mbps; LTE, Cat3, 50 Mbps UL, 100 Mbps DL
WLAN Wi-Fi 802.11 a/b/g/n, dual-band, Wi-Fi Direct
Bluetooth Yes, v3.1 with A2DP, EDR
NFC Yes
USB Yes, microUSB v2.0
   
   
Camera Primary 8 MP, 3264x2448 pixels, Carl Zeiss optics, autofocus, dual-LED flash, check quality
Features Geo-tagging, touch focus
Video Yes, 1080p@30fps, video stabilization, check quality
Secondary Yes, VGA
Features OS Microsoft Windows Phone 8
Chipset Qualcomm MSM8960 Snapdragon
CPU Dual-core 1.5 GHz Krait
GPU Adreno 225
Sensors Accelerometer, gyro, proximity, compass
Messaging SMS (threaded view), MMS, Email, Push Email, IM
Browser HTML5
Radio No
GPS Yes, with A-GPS support and GLONASS
Java No
Colors Black, Gray, Red, Yellow, White, Blue, Violet
  - SNS integration
- Active noise cancellation with dedicated mic
- 7GB free SkyDrive storage
- MP3/WAV/eAAC+/WMA player
- MP4/H.264/H.263/WMV player
- Document viewer
- Video/photo editor
- Voice memo/command/dial
- Predictive text input
   
   
Battery   Li-Ion 1650 mAh battery (BP-5T)
Stand-by Up to 330 h (2G) / Up to 330 h (3G)
Talk time Up to 14 h (2G) / Up to 8 h (3G)
Music play Up to 55 h