If you can afford  another phone that's really good, then you know that phone is for your crypto and Bitcoin investment. You can handle it with extra care.

Also, be careful with antivirus you downloads, some antivirus software actually carries the viruses. Even if it's recommended by a friend, have ways to verify if it's real or not.

Some antivirus software can wipe your assets or log you out of your account after downloading it. Then, many people overlook two-factor authentication, but it's helpful. Whenever you see an option for two-factor authentication, do it. It really helps, when someone is trying to penetrate your account, you'll get a notification if someone tries to log in, but without it, they can break in easily.