Sprint 2-Year Contract、AT&T Installment Programs、Verizon Device Payment Program、等。如果选择了这些计划,那么买到的iPhone是有锁的。如果 Pay in full, One-time payment ,一次性全款付清,是unlocked 无锁的。
When I buy an iPhone from apple.com, is it tied to a carrier or does it come “unlocked”?
Nearly all iPhone models sold on apple.com are “unlocked” — which means your iPhone isn’t tied to a single carrier. Your iPhone will only be tied to your carrier if you choose carrier financing from AT&T or Sprint.