Bitdefender is most trusted and popular antivirus for pc as well as mobile platforms. Now, they are offering free 6 months of usage exclusively for android users. Actually, they have mentioned on play store that trial period is of 14 days, but here is how to do it for 6 months. Bit defender provides Anti Theft, Privacy Adviser, App Lock, Malware Scanner and Web Security. To activate premium version for free, you need license key which can be availed using following steps:-
1) First of all, download BitDefender mobile security antivirus for android using this link.
2) Now click here to open thenextweb and you will see an option Login to Get It.
3) After login, just like them on facebook and share offer to google plus or twitter or facebook. It will hardly take 5 seconds to complete. Now follow the instructions as given on screen and you will get 6 months activation key absolutely free.
4) Now, open previously opened BitDefender antivirus and use the license key you got in above steps.
5) Congratulations! Now you will get access to premium features absolutely free for next six months.
6) DEAL WILL EXPIRE AFTER 3 DAYS (20 NOVEMBER 2014) SO WITHOUT WASTING YOUR TIME, GRAB THE KEY!!
7) For proof, you can check this link.