Before the 1020 burst onto the scene, the Lumia 920 was the starting point for Nokia's flagship series -- the highest-specced, most expensive mobile it makes. It has a 4.5-inch, 1,280x768-pixel-resolution screen, 4G LTE, and an 8.7-megapixel camera with Nokia's PureView tech. Like all Lumias, it runs Microsoft's friendly, easy-to-use Windows Phone software. Wireless charging and a screen you can use even with gloves on are fun bonuses.
A quick note on Nokia's naming scheme: the higher the number, the more expensive the phone. The "20" part means it's the most recent range (last year's mostly ended in "10," such as the 710, except the original 800 and 900). Got that? Let's move on.
Nokia's Lumia 820 is slightly smaller than the 920, with a 4.3-inch, 800x480-pixel-resolution screen. It has 4G LTE, but its 8-megapixel camera doesn't boast the same PureView technology as its big brother. You can still charge it wirelessly, but only by using a compatible battery cover.
The Lumia 822 is U.S. carrier Verizon's very own midrange Lumia smartphone. While a lot has changed aesthetically, the internals are very similar to that of the standard 820. Its bulky design leaves much to be desired, although it does come at an affordable price. The same can be said for T-Mobile's variant, the Lumia 810.
Just announced this week at Mobile World Congress, the Lumia 720 is Nokia's idea of a budget fashion phone. It has a front-facing camera, unlike some of the cheaper Lumias, but no 4G LTE. Limiting it to 3G means it'll be mainly sold in Europe, at a price of 249 euros.
Previously Nokia's cheapest Lumia, the 620 has now been undercut by the 520. It delivers the genuine Windows Phone experience at a low price, but you miss out on the PureView camera tech, and it cuts some corners with sound quality and battery life. There's no 4G, either. Its 3.8-inch screen has 800x480 pixels.
A relative newbie, the Lumia 520 is Nokia's budget Windows Phone, coming in at 139 euros (roughly $185, £120). With a 4-inch screen, 8GB of memory, a 5-megapixel camera, and swappable covers, it seems a perfectly respectable smartphone at a very low price. U.S. readers should note that they'll see it as the Lumia 521, exclusively from T-Mobile. We'll have to wait for our full review to see if it's as good a deal as the 620.
Many of Nokia's older phones are still available, but be careful: you can probably get better value for money by opting for a more recent model further down the range.
This is Nokia's previous best-selling Windows Phone of yesteryear, the Lumia 800. These phones featured a slightly smaller 3.7-inch screen and a good camera, and the first Windows Phone generation. They're unable to upgrade past Windows Phone 7.8.
The phone that really started it all, Nokia's Lumia 900 was Nokia's first attempt at winning over the U.S. with its larger screen, a front-facing camera, and 4G LTE. The camera still managed to disappoint, but the device did capture attention with its bold color choices, like cyan. The inclusion of LTE made it the best Windows Phone of its time.
The Lumia 710 was the original budget Lumia, launching at the same time as Nokia's first Windows Phone, the Lumia 800. While its design isn't as appealing as other Lumia phones, it does boast a decent 5-megapixel camera. Like the 900, however, its Windows Phone 7.8 OS is now out of date.
While the Lumia 610's 3.7-inch screen is pretty small by today's standards, it does have an attractive design as well a low price. Unfortunately that's all let down by the restrictive 256MB of RAM onboard, which means running more-intensive apps such as Skype and Angry Birds is a struggle for this phone.
The Lumia 510 was announced in September 2012, specifically aimed at developing countries. While Nokia usually employs a "higher is better" scheme, where the higher the number the better the phone, the Lumia 510 outdoes the Lumia 610 in one respect: its larger 4-inch screen. While that may be all well and good, the limited storage at just 4GB will definitely be filled up pretty quickly. While it may be extremely cheap, the 610 isn't that much more and despite the 0.3-inch difference in screen size, you get double the storage.