In most cases, yes. An iPhone purchased from apple.com (Opens in a new window)  is unlocked. Once your new iPhone is activated, it remains unlocked, which means you can use it with any network that provides service for iPhone. However, if you buy an iPhone with an AT&T Installment Plan, your iPhone will be locked to AT&T and will only work on the AT&T network for the term of your Installment Plan agreement.

An unconnected iPhone purchased from apple.com is unlocked. This means you aren’t tied to a single network provider or a multi-year service contract. You can choose the network and tariff that are right for you. Once your new iPhone is activated, it remains unlocked, which means you can use it with any network that provides service for iPhone.

iPhone 17 Pro models don’t have a physical SIM tray and activate only using eSIM. Use of an eSIM requires a carrier that supports eSIM and a wireless service plan. With eSIM Carrier Activation, supported carriers can assign an eSIM to your iPhone digitally. If your carrier supports eSIM Quick Transfer, you can transfer the SIM from your previous iPhone to your new iPhone without contacting your carrier. Additionally, your carrier can provide you with a QR code or ask you to use their carrier app to activate an eSIM. Learn more about setting up your eSIM(Opens in a new window). While traveling