I do not think there is actually a virus or something in the email. It is just a scam, something to hoax you. I opens the email with my ios device though. It may be different from other device. I think the reason it make the mobile device froze or something
is because the formatting of the email, there are too much character in the same area, like opening a really big and complex file, the mobile device take time to load. Just ignore and block the emails. There are similar scam emails, there is a reddit post
shows examples of them.
https://www.reddit.com/r/Scams/comments/biv65o/the\_blackmail\_email\_scam\_part\_3/###