My Galaxy s7 Active has really poor battery life

[SomewhatOfAGuy]

After each full charge my S7 Active seems to get hurt in battery life, the first day I got about 20-40 minutes per 1%.

Now, about a week after, I get 1-3 minutes per 1%, so about 3-4 hours.

I use my phone for occasional YouTube, spotify and quite a bit of snapchat and Instagram.

The only apps I have downloaded are Snapchat, Instagram, Spotify, Netflix and Reddit

I use regular charge every day to charge up my phone.

I let my phone discharge to around 10% before charging

I use the mid range battery saving option constantly.

I've started to restart the device every morning

I'm fully updated on my software.

I never use my data, only wifi with the occasional phone call.

What could be happening?

 

[Rukbat]

How far down (in percentage charge) do you bring the battery before recharging it? It looks as if either the battery was defective from the start, or you're running it until the phone shuts off, or is about to, which can kill the battery in a month. (Kill, as in not take any charge at all.)

Never let a cellphone-grade lithium battery go below 40%. If you don't have a power pack with you, and you're not near an outlet, turn it off. Or keep having the battery replaced. Your choice. (These batteries are not deep-discharge devices.)