-snip-
If you follow the rules, you will be safe, especially when you download the wallet from the official source and not a clone one. But one thing which makes other wallets safer from mobile phone wallets is when you have your wallet connected to a device you use on a daily basis to shuffle round the internet, you can never be too sure of which link you are clicking on from search which you don't plan to, especially when one is not using an ad blocker; you can get yourself exposed unknowingly.
What I think is - it is safe for someone to create a wallet on their phone, but it is not safe for long term storage especially if the device always online. What I have done is - install the wallet, create the wallet and backup all sensitive data offline, then uninstall it. I believe this method is safe because I don't have a wallet on my phone - but when I need it I just need to install it
[on the same device or another device]. But whatever it is, the risk is still there, but don't take security measures that are beyond your technical capabilities - it will have big consequences.