Major cellular carriers — Verizon, AT&T, T-Mobile, Sprint, and others — typically lock their networks to the iPhone you buy from their stores or pay for via an installment plan. What does that really ...

One common issue that some users face is their new phone not accepting their SIM card, requiring an unlock code. We will cover various methods to obtain the unlock code and troubleshoot your SIM card ...

Unlocking a mobile phone from a single U.S. carrier has caused consumers headaches in recent years, but seven major carriers on Wednesday met a voluntary, industry-created deadline to set conditions ...