[AC Question]

A message appeared on my husband's phone to make a security update or lose the security on the phone. I started the download which took forever. We were visiting relatives at the time and did not keep a check on it. When we got home we found it had used up most of our data which created a data usage warning. We want to delete the download without installing, but there is no place to do this. How do we get rid of the download?

[LeoRex]

Once the download completes, the file is typically stored in a low-level directory (typically /cache - NOT your phone cache... just a directory) that is not accessible unless you have root access. OEMs want you to take their OTAs, so they don't make it easy.