The best solution, if you ever lose your phone

If you are using a Samsung, just activate your Samsung account and then you can track and control the phone from your PC via SamsungDive.com

A third party alternative is Avast!

 

Cerberus anti theft

Does quite a few neat tricks.
Uses front camera to take a picture of the user if wrong password/pin/pattern is entered and emails it to you.
GPS locate your device on their website.
Email alerts if SIM card is changed.
Most importantly, you can remote wipe the entire device by sending a text message to your phone.

It's on the Play Store, I just can't post links yet.

 

can try syncnscan if you want

i keep turning gps off because the battery goes flat very quickly. but syncnscan can still find your phone when gps is off. not bad keke. think you can upload your contacts and stuff to cloud from the app too. if you really can't find your phone next time at least you still have your info.

they have some antivirus thing but im not too worried about viruses keke.

 

This thread has a thorough discussion:
http://androidforums.com/android-applications/578226-lost-stolen-phone-apps-best-best.html

 

+1 for Cerberus.
Small price, to many options to list. Just watch the video in the play store and you will see the great features.

 

Try "Got ya! Anti-Theft Protection" It has a lot of nice features.

 

Avast and Where's My Droid. Both free.