Electronic Frontier Foundation
Setting a passcode for your lockscreen is an important step, but it's not the end of the story for securing your phone. https://ssd.eff.org/module/how-encrypt-your-iphone
How to: Encrypt Your iPhone

In response to the U.K.’s demands for a backdoor, Apple has stopped offering users in the U.K. Advanced Data Protection. If you are in the U.K. you will only be able to use Standard Data Protection. Encrypting the data on your iPhone isn't as simple as creating a password. Since...

Feb 21 at 4:56pmTypefully
Show threadRusty ShacklefordFeb 21

@eff @coolcalmcollected
I have a laundry list.

For example:

https://github.com/hardcore-sushi/DroidFS