| 摘要 |
A roaming service area indication device in a mobile telecommunication terminal is disclosed. In one embodiment the roaming service area indication device includes a processor, configured to output a roaming indication control signal based on a location of the mobile telecommunication terminal. The roaming indication control signal is preferably configured to indicate when the mobile telecommunication terminal is in a roaming area. The roaming service area indication device also includes a light emitting part coupled to the processor, configured to be automatically activated in response to receipt of a roaming indication control signal indicating that the mobile telecommunication terminal is in the roaming area. The present invention may improve power efficiency and increase battery life in mobile telecommunication terminals.
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