Here is an excellent article written by Lily Hay Newman from Wired Magazine detailing the tools and the processes that law enforcement use to access an Android or iOS device. If you have 5 minutes it is a very good read.
Here is the article link – https://www.wired.com/story/smartphone-encryption-law-enforcement-tools/
Let me know if you need any advice about this or anything else.
Thanks and have a great day.
Incognito Privacy Care Team