In the US, many carriers employ software locks that prevent you from using a phone you buy from them on a competing network. Unlocked phones—those you pay for in total up-front, often directly from the manufacturer—are different.
In the US, many carriers employ software locks that prevent you from using a phone you buy from them on a competing network. Unlocked phones—those you pay for in total up-front, often directly from the manufacturer—are different.