This is the user manual for the Nokia Lumia 520. There are a number of Nokia telephones in Lumia range and you can view the list of Nokia phones in the user manual directory here and also the Lumia directory. The Lumia 520 does not have 4G and only comes with 3G and 2G as a mobile phone.
If you are looking for 4G then you would best look at such telephones as the Nokia Lumia 928 , Lumia 925 and also the Lumia 720 which has 4G connectivity. The 520 does come with 8GB storage built in which is much bigger than the 720 but the same size as the 925 Lumia. The mobile phone also comes with Microsoft Windows Phone 8 as an operating system and is powered by a Dual-core 1 GHz. The power usage is good as you can play music for 61 hours and it is a very good phone if you are not into the 4G market. The manual for the mobile phone has been listed below.
Nokia Lumia 520
Nokia Lumia 520 User Manual,