The high end is not everything. The market for mobile midrange also exists and there is ample competition, and even more so when Nokia will launch the new Lumia 505, its new smartphone that runs Windows Phone.
This mobile is Nokia Lumia 510 brother and will soon be available for the Mexican market and other countries.
The Lumia 505 is a smartphone with 3.7-inch AMOLED screen with a resolution of 800 × 480 pixels. No mention was made about your processor, but probably run with a single core.Besides this, it has 256MB of RAM and has 4GB of storage.
Other specifications of the Nokia Lumia 505 include an 8 megapixel camera, Bluetooth 2.1 and a 1300mAh battery.
Your operating system is WP 7.5, but can not be upgraded to WP 8.