How can I manage two SIM cards with different phone numbers on my device?

We are going to activate one SIM card, one interim SIM card that will work with a different number for a few hours. You can test it and make sure that all the messages come through at least to the phone. And then when you're done testing that, you just take out the SIM card and we will go from there, okay?

You can tell her to send you 5... 10 messages to see how many you receive of those 10 messages and going like that, okay?

Please let me know once you do it. I'm going to text you the phone number that's going to be active.

I will suggest you to do it at night, not in the middle of the day.

Put the new one in the SIM 1. SIM 2 will still work and I'll still be able to receive calls and texts from my current phone.