1. A SIM Card is used on GSM networks (like T-Mobile and AT&T here in the USA. Verizon will use one for their "World Phone" since that phone is made for going into other portions of the world where the GSM network is used). So why is that helpful? Well, a SIM Card holds information as you will see in Tip #2. As a P.I., Police Officer or an Attorney presented with a suspect phone, if you know what network the phone uses, right off the bat you will know what types of memory are on the phone and where the information can be stored.
2. A SIM Card holds valuable information about the subscriber besides his/her phone number, ie:
- Text Messages
- Phone Contacts
- Last number called with time/date
- And More!
NOTE: A SIM Card does NOT hold Pics or Video-PERIOD
3. A SIM Card should be handled carefully. A simple carpet spark can ERASE all the data.
4. SIM Cards have different memory values. As technology increases, so does the memory space in a card. At one time I heard of a German company that was working on a SIM Card that could carry 16 different phone lines on it. Imagine...16 lines??!!!
5. Some phones (available overseas) can have more than one SIM Card in them. Right now I know of a company that sells them for about $100 bucks. This enables the user to have two separate phone numbers on their phone.
These are just a few tips to better help you in an investigation. If I can be of further assistance, just holler at me at: firstname.lastname@example.org