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.
People that have been hacked or scammed knew how crypto works yet they still got scammed and that's because of their greediness. Scams can come in disguise form that you won't know it's a scam until you have fallen a victim already. Fraudster have different tricks of making things look legitimate when it isn't. There are different precautions method that you can use to stay safe but what's more important is the use of non custodial wallets and it has to be open source so that it won't be something different being disguise as a non custodial wallet. Crypto in your personal wallets should be safe without any cause for alarm but you have to be responsible for that.