If I upgraded could I keep using my old phone with the same contract instead of the new phone?

[MrScottyTay]

Hi, I am able to upgrade my phone but would actually prefer if I could use the upgrade to get a secondary phone, a smaller one that I can keep for runs instead of it being my daily driver.

Is it possible to keep using my current phone on my contract if I upgraded or would it be locked to whatever new phone I pick, rendering my current phone useless in terms of being a daily driver?

Any advice on this would be greatly apprecciated.

Thanks in advance,

Scott

[MI5 · Accepted solution]

@MrScottyTay 

Your old phone would work still.

When you upgrade you keep the same sim and just put it in the new phone, but you can only have one sim with your number on, so you'd need to switch sim cards when you wanted to use the upgrade or get another sim only or PAYG sim for it, but with a different number.

[MrScottyTay]

Awesome, thanks a bunch for the reply.

[MI5]

You're welcome