Sony Xperia C5 Ultra User Reviews

I am a loyal Sony products user and I loved the looks and the ease of use when I brought this product. However, I was disappointed with the battery life. It sustains barely for a day!! and no, I do not watch videos or play games extensively.
I have T-mobile and it uses an LTE network throughout my area. Additionally, I have wifi at home. So I switch off data services at home and places that host a wifi network with an aim to save some battery life.
But unfortunately it does not survive until the end of day...although my Xperia Z1s is better.