There are various method of tracking . Sim-bases tracking is very good. but most of time when our mobile is lost the founder through the sim of that mobile therefore it is not a good techinique to find our mobile using this technique.Using the SIM in GSM and UMTS handsets, it is possible to obtain raw radio measurements from the handset.The measurements that are available can include the serving Cell ID, round trip time and signal strength. The type of information obtained via the SIM can differ from what is available from the handset. For example, it may not be possible to obtain any raw measurements from the handset directly, yet still obtain measurements via the SIM.
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