Iphone 4 battery usually gets 4 hours of usage during day. Is this normal?

I take it off the charger around 7 and usually have to charge around 8 that night

No you need a new battery

See, the thing with iPhone is that it is a great device if used properly.

That being said find out if:

a) You leave your Bluetooth on but don't use it.

b) Leave LTE on but don't use it.

c) Keep Wi-Fi on but don't use it.

d) Keep the phone on all during the night while you are asleep.

f) keep the Brightness turned way up than you eyes can handle.

g) Locations are turned for every App that you use.

h) Never power-cycled the iPhone in your life.

Figure out all this and change accordingly, you will find that you iPhone battery charge lasts longer than you can give two hoots to.

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