: If your phone supports it, you don't need a store at all. You can buy a plan on the Mint Mobile website and activate an eSIM instantly via email.
While Mint Mobile is famous for being an online-first carrier, you can absolutely pick up a SIM card in person if you don't want to wait for shipping. You will typically find them as or Activation Kits at major national retailers . Where to Buy Mint Mobile SIMs In-Store buy mint sim in store
: A small metal tool to open your phone's SIM tray. : If your phone supports it, you don't need a store at all