It looks like Nokia likes to play with numbers when it comes to its Windows Phone devices. The Finnish mobile maker has already introduced a slew of Lumia phones such as Lumia 800/ Lumia 900/ Lumia 920/ Lumia 820/ Lumia 822/ Lumia 810/ Lumia 710/ Lumia 610/ Lumia 620/ Lumia 510/ Lumia 505. Yesterday, a couple of upcoming new Nokia phones called. Lumia 720 and Lumia 520, were spotted in an Indonesian carrier database. More leaked details about these two wannabe windows phones have been dug up, including their codenames, and some possible technical specifications..
According to MyNokiaBlog, the Lumia 710 will be codenamed Zeal, while the Lumia 520 codenamed Fame and both will ship with Windows Phone 8 OS.
Nokia Lumia 720
# 4.3-inch Clear Black display
# 1GHz Dual-core processor with an unspecified speed
# 512MB RAM
# 6MP rear-facing camera, and a 2MP front-facing snapper
# 8GB storage with microSD slot support
# HSPA+ capability
Nokia Lumia 520
# 4-inch Super Sensitive display with an unspecified resolution
# 1GHz Dual-core processor
# 512MB RAM
# 8GB storage with SD card slot support
# 5MP rear-facing shooter
Based on the aforementioned specs lists (if they are indeed true), both the Lumia 720 and 520 will be pegged as low-cost dual-core Windows Phone handsets, and Nokia is expected to unveil them at this year’s MWC 2013 trade show in Barcelona, where the manufacturer is also rumored introduce some high-end Lumia phones.
Source: My Nokia Blog