I store my bitcoin in mycelium mobile wallet. I do not own big amount of btc now so I think it is safer enough. I do not use desktop wallets because I do not have a PC now
If I get more btc, I will store them in a paper wallet as it is one of the safest methods to store btc
I prefer to store my bitcoin in my mobile block chain digital wallet. which is handy and safest way to keep the money online.