See the Nokia Lumia 820 User Manual here. Much like the Lumia 810 the Lumia 820 is just a step above it. come in with a Dual-core 1.5 GHz Krait processor and Qualcomm MSM8960 Snapdragon chipset the Lumia 820 is a good phone being 2G, 3G and 4G capable.
Nokia Lumia 820 User Manual
It comes with an 8MP camera has a 57 hours music play time showing how efficient it is with a dual core powering it. With a very good camera frame rate of 1080p@30fps. Operating on the Microsoft Windows Phone 8 software it has many options however not as many options as the Lumia 928 which comes with such features as image stabilization.The Lumia 820 also comes with an AMOLED capacitive touchscreen with 16M colors with the Nokia ClearBlack display and comes with 8 GB, 1 GB RAM for all your multimedia video and photos. The mobile phone also comes with all the bells and whistles such as Accelerometer, gyro, proximity and a compass built in. With more than 300 hours of standby time and more than 10 hours of talk time the Lumia will always be a good investment.
Overall a very good mobile phone from Nokia. We have the user guide listed below for download so you may see the many features this mobile phone really offers.
Nokia Lumia 820