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A SIM lock, simlock, network lock, carrier lock or (master) subsidy lock is a technical restriction built into GSM and CDMA [1] mobile phones by mobile phone manufacturers for use by service providers to restrict the use of these phones to specific countries and/or networks.
As a result, only phones that were purchased before or within 90 days of the effective date could continue to be unlocked by users. Phones purchased more than 90 days past the effective date would again be subject to the anti-circumvention clause of the DMCA and could not be legally unlocked without the carrier's permission. [4] [1]
More than 114,000 people signed the We the People petition asking the White House to decriminalize the unlocking of cell phones. That cry was heard, answered, and clearly agreed with by the ...
Talktime is generally higher in GSM phones due to the pulse nature of transmission. The availability of Subscriber Identity Modules allows users to switch networks and handsets at will, aside from a subsidy lock. GSM covers virtually all parts of the world so international roaming is not a problem.
A phone with a broken display. Nomophobia [1] (short for "no mobile phobia") is a word for the fear of, or anxiety caused by, not having a working mobile phone. [2] [3] It has been considered a symptom or syndrome of problematic digital media use in mental health, the definitions of which are not standardized for technical and genetical reasons.
A research team from Israel found that the A5/3 cryptographic system used to secure the 3G connection in GSM phones are potentially vulnerable. Does this mean your GSM phone on a 3G connection is ...
When talking about IS-95/GSM multi-mode phones, for example, or AMPS/IS-95 phones, the base band processing is very different from system to system. This leads to real difficulties in component integration and so to larger phones. An interesting special case of multi-mode phones is the WCDMA/GSM phone.
The Global System for Mobile Communications (GSM) is a standard developed by the European Telecommunications Standards Institute (ETSI) to describe the protocols for second-generation digital cellular networks used by mobile devices such as mobile phones and tablets. GSM is also a trade mark owned by the GSM Association. [2] "