The mobile wallet is more convenient for newbies but it doesn't offer something special for average users. Everything the traders can do with a mobile wallets can be done through the web wallets and the security of desktop or web wallets are better compared to risks injected malware on rooted smartphones.
Why must a crypto user root his or her phone? That's not already a safe process, rooting an android phone isn't secured anymore and can easily be infected with malwares, there is more that meet the eye when it comes to a rooted phone, it automatically becomes a open door where anyone can come in and go out when they like.