Hello, community. We've recently open-sourced our mobile wallets, and there's a Bitcoin wallet among them.
https://github.com/guardaco/guarda-android-wallets
Hope it'd be interesting for you.
Feedback is appreciated, as usual. You're welcome to leave reports at the GitHub page if you find ways to improve our babies.
And if you're interested in some more safe & user-friendly crypto wallet products, check our official site.