We may earn a commission for purchases using our links. Learn more. Using a standard SIM card in your GSM (and some CDMA) BlackBerry is pretty easy to grasp at this point. Most come pre-installed if ...

Thanks to a small plastic adapter, iPhone owners can take their micro-SIM card and use it with another cell phone. Kent was a senior managing editor at CNET News. A veteran of CNET since 2003, he ...

Find out how to trim your own micro-SIM card for use in phones that require this new format. Sharon Profis Former Vice President of Content, CNET Studios As vice president of CNET Studios, Sharon led ...