Try mo to if http injector ang pinakamalaking dara usage. Try mo uninstall yan http injector then re install ulet. mag back to zero yan data usage ng injector. yung dating http injector magiging normal apps . mawawala din yan. try mo lang ala naman mawawala. xpirience ko na kz sa sobra gamit ng http injector
go to developers option. limit ur backround process to 3 from standard limit. also go to settings>data usage> tick the 3 dots on upper right. >check limit data process.
if rooted phone mo
download app freeze or app disabler.
disable most system or google apps that run in bacround. ex google playstore, google play,gmail,maps. etc.