Open the phone settings → "SIM Card Manager" .
Check both SIM are active on device .
From Data service network choose SIM 1 or SIM 2 for data connection (My case i will be using SIM 2 for data connection).
To decide which phone number to use to register PGSM select the SIM from the notification area (SIM 1 or SIM 2).
Open PGSM and start step by step the automatic activation Wizard.