I usually get around 2 hour screen on time but standby time is excellent, and if I forget to plug it in to a charger at night then after 7 hours it drains around 6 percent.
Battery recently changed and phone underwent factory reset.
I don't think only 2 hours SOT is normal at all yet there are so many variables maybe you should note down everything like brightness? signal strength ?wifi and gps on all the time ? wake locks? you know .details. it all comes down to your usage.