The Nokia Lumia 635 and the Lumia 630 have been launched as the budget Windows Phone 8.1 devices.
Nokia announced the duo of budget Lumias to complement the high-end Nokia Lumia 930, also announced at the Microsoft Build Developers’ Conference.
Both smartphones come with Windows Phone 8.1 pre-installed, offering the new features like voice assistant Cortana and the notifications Action Centre hub.
Windows Phone 8.1 runs on the 4.5-inch FWVGA display with Gorilla Glass 3 on a 1830mAh battery.
They feature fitness tracking features via an integrated low-power chip called SensorCore, which works with the Bing Health and Fitness to provide real-time monitoring for data like steps taken, calories burnt and miles walked.
In the rear is a 5-megapixel camera and the Lumia 635 and Lumia 630 both run on a quad-core 1.2GHz Qualcomm Snapdragon 400 with 512MB of RAM.
Both will be available in three colours (bright green, orange or yellow) with interchangeable shells and either a matte or gloss finish.
The Lumia 635 is a 4G LTE budget blower, while the Lumia 360 is 3G or 3G dual-SIM compatible.
if you want to purchase of these new Lumia smartphones, the single-SIM Lumia 630 will cost around $159 (£95) and the 4G Lumia 635 will sell for around $189 (about £115).
Read more: Windows Phone 8.1 Features