Welcome to Android Central! You'll need to give a lot more detail than that, since there are many reasons why battery can drain quickly. Start with the specific Samsung model you have.
Charge up to 100%, then let it drain to 20-30% with normal usage, without charging in between. Then show us:
1. The main
Settings>Battery screen.
2. The fullscreen battery graph screen (which may show Awake time and Cell Signal Strength).
3. The Screen category (to see total Screen On time).
4. The Cell Standby category, if present (to see Time Without Signal).
http://forums.androidcentral.com/ge...ide-how-post-screenshots-android-central.html
You might have to install a 3rd party battery monitor, like GSam Battery Monitor, to get the Cell Signal Strength graph.
Please register on this forum, which will allow you to engage in discussion more easily, as well as post images.
https://forums.androidcentral.com/ask-question/409154-join-android-central-community.html