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CELLULAR ROAMING
Codes & Tools for Using Wireless Away from Home & Out of the Country





Mobile Network Codes (MNC) International Roaming




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Roaming Codes Roaming Codes:

MNC
The Mobile Network Code (MNC) is a 6-digit number used by GSM and other wireless networks. This code helps your phone identify on which network it should be operating.  The MNC is transmitted by the cell site and a list of codes is saved in the wireless handset.

SID
The System IDentification Number (SID) is a 15-bit numeric identifier used by cellular systems to identify the home system of a wireless carrier and by the cellular telephone to determine its roaming status.  The SID is transmitted by the cell site.

PRL
The Preferred Roaming List (PRL), is a list of numbers stored in a CDMA wireless phone that determines how your phone will behave in certain geographic areas, whether or not it can roam and on what roaming carriers.
Our list is a set of SID's and a code that determines what happens when that SID is received. 
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