GSM Unlocked Smartphone - 搜索视频

What does the term GSM unlocked mean?

What does the term GSM unlocked mean?

The Global System for Mobile communication (GSM) is a specific standard that was created to describe protocols for 2G cellular networks used by cell phones. An unlocked GSM phone means that the phone can access any carrier service that uses GSM technology. Understanding the difference between a locked and an unlocked phone is tricky and ...

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