I have a 4GB Android phone, an original Moto E. Simply updating the phone left it full without anything adding any applications to it. It left it unable to be

I have a 4GB Android phone, an original Moto E. Simply updating the phone left it full without anything adding any applications to it. It left it unable to be updated without clearing the cache of everything on the phone every time. Luckily Motorola supported rooting the phone, which made CyanogenMod easily installable at the time. That fixed the update problems and even allowed me to transfer applications to an external SD Card if I wanted (I do not recommend this for any SD Card slower than a UHS SD Card). It now has LineageOS on it, as that is what replaced CyanogenMod when it ceased to be supported. Works great, although the phone itself may be a bit slow.