An eSIM is just a physical SIM that has gone digital. Instead of physically inserting a SIM into your phone to join the Ultra network, you install an eSIM onto your phone. This means you don’t have to wait for your SIM to be delivered; you can activate it straight after purchase. If you’re new to Ultra, and have an unlocked, eligible phone you can choose eSIM at the time of purchase online or at an Ultra Mobile Retailer. Please use our store locator to find one near you.