Coinomi Wallet
Used to be open source, but is no longer.
Discussion: https://www.reddit.com/r/Bitcoin/comments/6rbzwm/just_noticed_coinomi_android_wallet_is_not/
Website: https://coinomi.com
Support: https://coinomi.freshdesk.com/support/home
Announcements: https://twitter.com/CoinomiWallet
Blog: https://medium.com/@coinomi/
Download Coinomi Wallet: https://play.google.com/store/apps/details?id=com.coinomi.wallet