
Mobile Forensics ◾ 259
More importantly, and most relevant to forensic examinations,
CDMA2000 phones do not require a SIM card. GSM do. In the United
States, AT&T and Sprint use GSM, and Verizon, T- Mobile, and U.S.
Cellular use CDMA2000. Now, earlier I said “two and a half” because the
next generation of CDMA2000, LTE, does require a SIM card. Another
important distinction to make is that CDMA phones cannot make phone
calls and receive data at the same time. What then does it mean if data
clearly landed on a phone during an in- progress call? See this footnote for
the answer.
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Interestingly, GSM is built on CDMA technology, but that’s a ...