New 6 Plus coming - which sim?

I am currently using an unlocked 6 plus that i purchased from apple (tmobile version). I'm using it on att. I went into att and got a sim when I bought it. they handed it over for free and i put it in and that was that.

I ordered a new 6 plus (different color and more gb) that is arriving soon. Should i activate it with the sim it already has in it or should i take the sim out of my current 6 plus and put it in the new 6 plus?

dcharleyultra said:

Do you want to keep your current phone number?

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I bought one outright from Apple that I'm using now unlocked, the other I bought on NEXT so they both have my number tied to it. I'm not aware of them being able to just create a new number/line for me.

I bought and use an unlocked Gold 6 Plus 16GB now with an att sim, phone number 1234.

I also ordered a Space Gray 64GB 6 Plus because I wanted more storage and the SG color. I ordered this phone on Apple.com using ATT NEXT. I bought the upgrade through phone number 1234.

I would assume either sim is fine to use but I'm just curious if one is better than the other.