2. Bad travelers do not keep an eye on their cell phones.
There are lots of pickpockets and thieves willing to own your mobile or whatever you leave off-guard. Even if your cell phone is not expensive, you need it because you keep all your contacts and pictures there. It is not a problem at all to replace your device. The real problem is that you will lose all of your private information forever. Some people have phone numbers of their families and friends, use their phone to enter their social accounts or check email boxes. There is a special app that alerts the owner right the minute your device gets into hands of an unauthorized user. There are plenty of LastPass and LogDog fans. Read more on the net if you need some more details about what those things are for.