If you are using a mobile phone to provide crypto security, you can use a secure software wallet such as Trust wallet. Fraudsters will try to trap you in various ways and they may lure you financially and do not click on the link they provide if you find it suspicious. If you understand how crypto works well, it will be very easy for you to identify the fraudsters. Otherwise, you should never install any unknown app because research well about what you are doing and be aware of it yourself.