There are many bitcoin wallet clients on android market. What is the best considering security, interoperability and usability?
If you want to keep your private keys secret (on your phone, that is), I'd recommend
The app also does not imply any trust in single servers, as it manages the block chain on-device.
There are various factors that matter.
If you wish to use the same EWallet account from both the web as well as from the mobile, then mobile-only wallets would be excluded.
Also, since an EWallet service requires service from a back-end, availability can be a concern as well.
Here's a list of options:
I would suggest ImToken wallet as you owe your own privatekey. And also they have integrated few markets inside it.The best part is it's very easy to use and completely decentralized.Always write down your mnemonic phrase in piece of paper and keep it is safe.
Recently they have raised 35 billion dollars for the development and 20 billion of coinbase customer asset is in ImToken.