You can use the blockchain wallet on your smart phone, I think it is very safe to use a blockchain wallet or otherwise like a coinbase wallet
Online wallets are never secure nor safe you don't hold complete control over your Bitcoins, hence, there is always a chance that you will lose your funds (due to hacks, bugs, malwares, etc.). Better use an offline wallet, OP. It's much more secure and you have control over your coins something like Bitcoin Core (if you can bear/handle downloading more than 60GBs), or use a light wallet like Electrum.
Security depends on how users keep their bitcoins not just by looking at the wallets they use
That's the most stupid thing I've ever seen. The wallet is exactly how someone is keeping their Bitcoin. Sure, they can deal with their Bitcoin in a different way, but that doesn't change the importance of choosing a real wallet.
Online wallets are not secure. That's just a fact. When you put all of your money in an online wallet, Bitcoin is no longer a trustless system and a huge amount of the reason for it existing fades away. It's no longer your Bitcoin, it's Coinbase's Bitcoin or Blockchain's Bitcoin.
Learn more about your understanding of bitcoin wallet and correcting it about blockchain wallet, I just give recommendation not to debate this, all back to user respectively not to correction each other, cheers
I don't need to correct my view as it is objectively correct.
In Coinbase, you have no control over your private keys. Therefore, Coinbase owns your coins. There is no way to argue with that using Google's translated one-liners.
In some web wallets you can view your private keys, but they also can and they still basically send your transactions for you. Even if they claim it's encrypted before it reaches their servers, you have to trust that they're telling the truth. Blockchain has a chrome extension, but if you use that it's no longer a web wallet and that's what we're talking about here.
There's no situation in which web wallets are actually secure. Exchanges like Coinbase are even worse.