LG treasure: phone performance issues
This is ridiculous, no mobile company wants your to buy a mobile every month.
I assume your phone is LG treasure L51AL
Your phone stats are

Qualcomm® Snapdragon™ 1.1 GHz Quad-Core MSM8909;
Internal Memory: 8 GB (up to 2.87 GB usable)
I was unable to find your Mobile's RAM; please provide that


Shut down your phone and restart.
Do you close your applications after use or do you minimize them?
Download &quot;clean master&quot; and clean your mobile; it gets rid of unnecessary caches and other stuff.
Are you sure that there aren't any third party app which has come with the phone?

You processor isn't very good; its 1.1GHz and Quad-Core; so your phone would be relatively not fast. Your storage space is also very little; make sure it isn't almost full, as that could cause your mobile's performance to decrease.