If you buy an iPhone second-hand and it has iCloud Activation Lock activated, and the seller is unavailable, you can still get going with the iPhone. Here's how to remove iCloud Activation Lock ...

While the official method to remove the Activation Lock is by providing the password to the linked iCloud account, there are unofficial methods to bypass the Activation Lock without the previous owner ...

Google’s system basically keeps all the security of a SIM PIN, while removing all the inconvenience. Just make sure you jot down the Android-managed PIN somewhere secure, in case your phone ever dies ...

After you purchase and use your cellphone for an extended period of time, you can change networks. However, the phone that you're currently using may not be offered on that network. If you wish to ...