Removing a SIM card from your phone can sometimes seem like a daunting task, but it is a relatively straightforward process that can be necessary for various reasons, such as switching carriers ...

To check if your Android phone is unlocked, try swapping in another SIM card or test your network settings. If calls work, ...

However, some owners of Android phones may have their contacts saved directly to their SIM card — these people will have to first transfer them from their SIM cards to their phones before swapping.