![background image](http://html.mh-extra.com/html/samsung/sph-m610/sph-m610_user-manual_1189450032.webp)
29 Roaming
MDN
This setting allows you to associate your Mobile Directory Number (MDN) to your
phone’s Electronic Serial Number (ESN). You will need a Master Service Lock
(MSL) code, which you can get from your service provider.
1.
From the standby screen, press
+<6 digits MSL code>+
.
2.
Follow the instructions provided you by your service provider.
Warning
: Incorrect modification of the MDN may render your phone inoperative.