The Nokia Lumia 520 was launched sometime in April 2013 whereas the Lumia 620 came in a little earlier in January 2013.
The Lumia 520 is one of the cheapest Windows Phone 8 and is a decent one for the price. However, just by spending a couple of hundred dollars more, you can get the Nokia Lumia 620. The Lumia 620 is available in various colors like orange, lime green as well as yellow, cyan along with the black and the white. The Lumia 520 is available in white and in black as well as yellow, cyan and red.
Design and Display
Both the Lumia 520 and the Lumia 620 are good-looking devices, though they show some differences in design. The Lumia 620 is 11mm thick at 127g whereas the Lumia 520 is thinner at 9.9 mm and weighs less at 124g. The build quality is good even at the low price for both these devices. The Lumia 520 is cheaper than the 620. However, the Lumia 520 has a bigger screen of 4 inches with a super sensitive touch. Yet, the bigger screen of the 520 is not better. The Lumia 620 has a smaller 3.8 inch screen, a TFT one with better viewing angles and better color reproduction as well. The screen resolution of both the devices remains the same at 480 x 800p. This works out to be a better ppi of 246 for the smaller screen Lumia 620, and a 235ppi for the bigger screen of Lumia 520.
As far as dimensions are concerned, the Lumia 520 has dimensions of 119.9 x 64.0 x 9.90 mm, whereas the Lumia 620 has dimensions 115.4 x 61.1 x 11.0 mm.
Both the devices have a rear camera of five MP for stills and 720p for taking videos. The quality of the pictures taken in both the devices is almost the same. However, the audio quality for video recording is different. The Lumia 620 has the HAAC chip for Rich Recording, so it offers a better audio for video recording with a wider frequency range and no distortion. The Lumia 520 lacks this feature. In addition, the Lumia 520 also misses the NFC chip, present in the 620. This feature is very useful for tapping and sending purposes. The Lumia 620 comes with an LED Flash and a front camera of 0.3 MP, both of which are absent in the 520. The battery capacity of the Lumia 520, however, is slightly bigger at 1430 mAh, compared to the 1300 mAh, of the Lumia 620.
Both the Lumia 520 and the 620 have almost similar software features. The OS used in both the cases is the Windows Phone 8. The 520, however, does not feature the Here Drive+ and instead has the Here Drive. You can use the Here Drive only in the location of your local SIM. The Here Drive+ offers features for global navigation. Global travelers might miss this feature in the 520 and would do better to opt for the Lumia 620. The 520 also does not have Nokia specific setting features, such as the Dolby setting or the display + for touch settings.
The same 1 GHz dual core processor powers both the phones. They also have the same RAM of 512 MB and an internal storage of 8 GB. Both the Lumia 520 and the 620 come with expandable storage up to a maximum of 64 GB through the use of a micro SD card.
If you are not too interested in all the additional features offered by the Lumia 620, you can opt for the 520. The 520 is cheaper at around $180, compared to the 620 at around $250. Both the devices have the same software and similar internals as well as similar performance.
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