In my opinion, the best Bitcoin wallet for Android is the Bitcoin Wallet (also known as Schildbach wallet).
The only thing one needs to be aware of is the fact this wallet does not reveal the seed to you directly but rather encrypts it and allows you to save it locally as a file (can be also be saved in other places after encryption).
I haven't used it. So, the wallet forces you to make a digital backup of your seed even if it's in an encrypted format? Can you decrypt the seed manually (without using the native software) to check the seed words and make an offline backup or is there no such option? I don't like being forced to make digital backups if I don't want to.
Also, allows you to choose the fee you want to pay, but you can't accurately type how many sat/vB you want to pay, the minimum is about 2 Sat/vB last time I checked.
How do you enter the fees then if it can't be entered accurately? Maybe it only works with round numbers and not with decimals. Ledger Live has such a weird fee entry system.
You can use the wallet without backing it at all. It has the option to backing the seed, the process itself consists in providing a password which is used to create an encrypted a file containing the seed. After being encrypted with a strong enough password the app instructs the user to save the file outside the phone itself.
It can be on a computer, USB memory or the cloud (assuming the password is good enough).
If the telephone is destroyed, formatted or stolen, one can download the app again, import and restore the wallet with the file and the password. I have done it personally several times in 2020. The creator of the wallet "Andreas Shildbach) has provided a tutorial to extract the seed separately in a computer, using the file and the password, the result displays the 24 words. The app itself does not show the seed in plain text, for security according to the developers.
The fee options are shown as: High, medium and slow.
The exact amount of say/vB is not detailed on app, only on explorers.
In my opinion, the best Bitcoin wallet for Android is the Bitcoin Wallet (also known as Schildbach wallet).
Is the wallet supporting passphrase, opt-in RBF and coin control?
I don't think so.
It is a rather simple wallet, I think, in comparison to other ones.