How secure are Android smartphones when someone gets physical access to the phone, in other words, someone stealing my phone and how to improve this security?
I'm especially worried about all the accounts that I am logged into on my phone such as my google account, and my bank account which solely uses my fingerprint as login verification.
On Windows, I use full disk encryption with a pre-boot password. The pre-boot password is necessary in order to prevent a cold-boot attack/DMA attack in case an attacker gets physical access to my computer. Also, I'm very aware of the fact that my data on my Windows laptop is not secure if Windows is already running when the thief gets a hold of it, even if the lock screen is activated. However, other than a laptop, I usually never turn my phone completely off. Usually, my phone is always turned on and I would just use the lock screen when not using it. Completely turning the phone offline dozens of times a day would be very impracticable. This however seems to be very insecure, since even if I used device encryption the decryption key has to be somewhere in memory, ready to be accessed by everyone who steals my phone, right?
Also, I'm using an Honor View 20 phone, which seems to not have the functionality of encrypting my phone. There is just an option to "enable the data safe" which seems to only encrypt some of my personal files, but not the entire device. Unfortunately, it doesn't tell me exactly.
I'm very worried about the security of my personal data and especially the accounts that I'm logged into on my phone in case of it being stolen.
How secure is my data on an Android phone in such a case, when I'm just using the regular lock screen and fingerprint ID? Can the Android lock screen somehow be bypassed? And can I somehow get my phone just as secure as I can get a modern Windows laptop with a TPM Chip, enabled device encryption via Bitlocker and a pre-boot password?