Samsung Keystone 2

The Samsung Keystone 2 increases the durability of its battery with a super long standby time of up to 30 days. Plus it is equipped with various useful features - FM radio, a unit converter which converts currency, length, weight, volume, area, and temperature). The phone also includes a calculator and MP3 ringtones for full and nice ringtones that alert you to incoming calls and messages. This phone was released in 2012 and is also identifiable by the model number QT-E1205Q.