few different on going issues with my iPhone 5. this normal?

[x-evil-x]

lately ive had to be resetting the phone daily to sent texts out. They wont send till i restart the phone. Ive never had to reset my phone so much before ever(iphone4)
if my percentage drops below 15% and i take a picture with the flash the phone turns off.
sometimes i wont get texts till 3-4 hrs later.

i seem to have to close apps to open them sometimes to get to work.

time to swap it for a new one?

 

[x-evil-x]

noticed that if i dont charge my phone with the adapter overnight(instead using the normal connector) i havent had these problems today.
Could this be linked to the adapter? seems strange to me.

 

[Applejuiced]

Sounds weird for sure.
Not sure if an adapter would cause issues like that.

 

[x-evil-x]

yea not too sure. all today it was fine from me charging it with the normal cable. Usually i have to restart the phone daily