Swap the sim to save yourself the activation fee. If you power the phone on with the sim in that came with it, then it’s to late.
My process every year is, remove Sim, power phone on, update to same version my existing phone is on, then reset phone. Power off old phone, pull sim, put sim in new phone, power on new phone, restore from backup, go on with my day.
Never paid an activation fee following this process on Verizon since the iPhone 5.