The first ever Firefox OS-powered smartphones, Alcatel One Touch Fire and ZTE Open, were officially unveiled at the Mobile World Congress 2013 in Barcelona.

MWC 2013: Alcatel, ZTE Show off First Firefox OS Smartphones
MWC 2013: Alcatel, ZTE Shows off First Firefox OS Smartphones (Facebook)

Alcatel One Touch Fire boasts a screen of 3.5-inch HVGA TN with a resolution of 320 x 480 pixels and is powered by a 1GHz processor. The phone packs 256MB RAM and a 3.2-megapixel camera. According to various tech reviews, One Touch Fire is targeted as an entry-level smartphone.

MWC 2013: Alcatel, ZTE Show off First Firefox OS Smartphones
MWC 2013: Alcatel, ZTE Show off First Firefox OS Smartphones

The Firefox smartphone will hit stores in June. Its connectivity features include Wi-Fi 802.11 b/g/n, Bluetooth 3.0 with A2DP and GPS with A-GPS support. The One Touch Fire smartphone packs other features like a 3.5 jack stereo headset and a 2GB Micro SD card. It packs a battery of 1400 mAh which claims to provide a talk time of 12 hours in 2G and seven hours in 3G as well as a standby time of 400 hours in 2G and 300 hours in 3G.

MWC 2013: Alcatel, ZTE Show off First Firefox OS Smartphones
Alcatel, ZTE Show off First Firefox OS Smartphones
MWC 2013: Alcatel, ZTE Show off First Firefox OS Smartphones
Alcatel, ZTE Show off First Firefox OS Smartphones

On the other hand, ZTE Open boast a 3.5-inch HVGA TFT display and Cortex-A5-based Qualcomm MSM7225A processor which is usually clocked at 600MHz or 800MHz. The other features include a 3.2-megapixel front-facing camera, 256MB RAM, 512MB internal storage and connectivity features like WIFI 802.11a/b/g/n, Bluetooth 2.1 (with EDR3) and GPS. Additionally, it will also feature FM radio, accelerometer, ambient light sensor and 1,200mAh battery.