Change sim card
Am purchasing an unlocked Galaxy S10 and currently have a Galaxy S8. I want to keep my AT&T service, however they want a very high price for a new S10 and I am saving 300$ ordering a new one online. Do I extract the sim card from my S8 and put it in the new S10, or go to an AT&T store and have them insert one? Will there be any other issues to address, or will the phone work as soon as the sim is inserted? Thanks!