My phone (An Honor 5C) downloads images and videos from advertising. These files don't appear in my gallery, they only appear when I post a photo on Instagram or in the Huawei HiSuite. I keep deleting them via HiSuite, and they keep coming back on my phone. I thought it could come from apps (when I was using Messenger, my phone downloaded stickers all the time), but the ads my phone had never appeared in my apps, I have never seen them. I used every application on my phone, while checking if the problem came from it, but it doesn't, none of the apps causes the downloading of these files on my phone. I also reset my phone, and the problem has not resolved.
Have you ever had this problem? Do you know to fix it?