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Reply To: Country Border Roaming Issue

June Nguyen

Timer for return to HPLMN

If the MS in Automatic Mode has selected and registered on a VPLMN of its home country, it shall make
periodic attempts to return to its HPLMN.

The interval between attempts shall be stored in the SIM. Only the service provider shall be able to set the
timer value. The timer shall have a value between 6 minutes and 8 hours, with a step size of 6 minutes.
One value shall be designated to indicate that no periodic attempts shall be made.

In the absence of a permitted value in the SIM, or the SIM is phase 1 and therefore does not contain the
datafield, then a default value of 30 minutes, shall be used by the MS.

This timer set at SIM memory, i am not sure it change be change from operator