O2 X2i is a compact and smart mobile phone that was introduced in 2005. The phone is measuring 44 x 89 x 22 mm and weighs 95g. It is relatively a light and trendy handset. The phone is equipped with a 128 x 128 pixels TFT 65K colors screen. Along with a numeric keypad with soft and nice keys you can also find a four-way navigation key centered below the display. O2 X2i is not only a phone, it can also captures still photographs and video with in-built VGA camera.

O2 X2i supports Tri-band GSM 900/GSM 1800/GSM 1900 MHz for network connectivity. The phone offers various features that including Polyphonic ring tones that can be set according to your choice from easy to use menu and if these tones are insufficient, then you can download new tones from your friend's mobile or from internet. Other features of GX25 are Vibration alert, WAP browser, Java, SMS, EMS, MMS, T9, Calendar, Alarm, Clock, Games, Call records and spacious phonebook.

O2 X2i is powered by a Lithium Ion battery that has capacity to work up to 237 hours in standby mode and 5 hours of talk time.

O2 X2i is economical and reliable to any user who gives less attention on caring the handset. Its battery back up is brilliant.