Kuna Applications kibao Play Store zitawasaidieni kufuta Junk files kama Applications cache, na temp files... Mimi nashauri "Clean Master"
https://play.google.com/store/apps/details?id=com.cleanmaster.mguard
Pia kwa zile system Applications ambazo huzitumii mara kwa mara basi cha kufanya ni ku-unistall updates zake.. Pia nenda Play Store >Settings alafu Disable "Auto update"..
Kingine angalia system Apps ambazo siyo za lazima nenda kwenye App manager then Disable au Freeze them... Pia kumbuka wingi wa Applications kwenye simu yako inaweza kuchangia tatizo hili, na ukubwa wa Applications unazoweka..