You can access & retrieve a lot of data from your mobile phone even if you don’t have it with you.
The data which could be fetched includes
1) Contacts (Fetching contact number from your Address book)
2) Call Logs (Checking Missed Calls/Received Calls/Dialed Numbers)
3) IMEI Number
4) Phone Profile (Changing profile mode to Ringer or Silent)
5) SIM Number (Retriving SIM Number)
6) SMS logs (Checking SMS's received on your phone)