Every GSM phone needs a SIM card, and you'd think such a ubiquitous standard would be immune to any hijack attempts. Evidently not, as Karsten Nohl of Security Research Labs -- who found a hole in GSM ...

IBM researchers released a report last Tuesday showing that some cell phones' security cards could be cloned in minutes, letting hackers make calls and route charges to the cloning victim's account.

If you ask most cell phone users what they understand the term “unlocked phone” to mean, they will likely tell you that it is exactly what it says: that you can use the phone on any cell carrier ...

Wireless carriers sell you “postpaid” contract phones at a considerable discount. The carrier expects to recoup its outlay — the full price of the equipment — over the life of the contract that you ...

SIM card problems can easily be determined by the error prompts and warning messages. Among the most common SIM errors that have plagued various Android devices ...