I have a postpaid account using an old Lumia 640 Windows phone. I have purchased a new Pixel 4a 5G and I would like to just switch the SIM from one to the other (by reducing the card to the smaller size). I need to make sure it’ll be OK because I will not be able to return the smaller card to the old phone if it isn’t.
The new phone is already configured with everything, apps, settings etc. I don’t want anything other than the phone# and service plan info to transfer to the new phone. I know the contents are not compatible, but can anything on the card mess up the content/settings of the new phone?