Cell Standby draining my battery on Lollipop !

Hi guys, im using stock android 5.1 on my HTC ONE M7, and im having a problem with cell standby, it keeps killing my battery, i searched on google and found that alot of people have this problem too, i found only 1 fix, only by installing xposed framework, but i dont like installing xposed framework! Is there any other fix than installing xposed, for fixing cell standby draining my battery ? :D

I have Internacional HTC ONE M7
Live in Europe .