The SIM stores network state information, which is received from the Location Area Identity (LAI). Operator networks are divided into Location Areas, each having a unique LAI number. When the device changes locations, it stores the new LAI to the SIM and sends it back to the operator network with its new location.
Russia Technical Information - In Details. Russia Voltage. The voltage in Russia is 220 V which is the same voltage used in China, Greece, Russia, South Korea, and the United Arab Emirates. 220 V has an advantage over lower voltage such as the 110 V that it is cheaper to transmit.
For over 30 years, we've sold our voltage converters to travelers and people who are relocating overseas, effectively allowing them to use their electronics anywhere they go. The devices convert the electrical voltage up to 220 volts or down to 110 volts, depending on your needs.