• CSC is also known as Carrier Specific Code or Country Specific Code

    The CSC is mainly used to give the customers best experience of their network. To achive this goal, they have created this carrier specific code. It contains APN configs for the carriers, enables specific features such as VoLTE (Voice Over LTE) or Wifi Calling. It has only advantages to install the right csc of yours!

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    My mind :D