Contiguous simply means touching or sharing a border, according to Merriam-Webster. When it comes to the United States, contiguous refers to all of the states that touch one another, without another country or a body of water coming between them. These are sometimes also referred to as the lower 48 states.
.apk extension stands for android package file. It is a file format used to distribute and install applications.It includes the programm codes ,assets ,resourses ,certificates and manifest file. .Dex extensions stands for Dalvix Executable files.
PUK, which is sometimes called the PUK Code, stands for Pin Unlock Code.. It is occasionally called PUC, which is the same as PUK.. This special code is needed to unlock the cell phone if the wrong four-digit pin number has been entered three times in a row or if the SIM Card has been reported stolen.