What's the point of encrypting your Smartphone, if it is dependent on a password?

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If I encrypt my android phone for all my files, to decrypt it, I have to type a password in, right?

So couldnt the FBI just crack that password or pin if it's not something 50 characters long? So I dont get the point of encrypting.?

Best Answer:

Josh: You don't need a long password for security (assuming you use random characters & not a simple word).

Just an eight character password has so many combinations that it would take decades even at a million tries a second.

Ten characters puts you into the million year range.

With "only" six characters, the password takes about 200 years at 100 tries per second (to work through every possible number/letter/symbol combination).

The average time to discover a password by "brute force" is about half the time for all possibilities.

That's not allowing for any wrong-password lockouts or delays, which most things have if you enter a wrong password/PIN to many times.

(There are around 90 printable characters in standard ASCII text; if you allow them all, for a ten character password there are around 3.4867844 x 10^19 combinations…)

Other answer:

Josh:
The FBI could take 20 years to hack the password, yes. But other people won't bother!!
Techwing:
If the password is well chosen, not even the FBI will be able to guess or crack it, so it's secure. Just choose the password well.
Jane:
They prevent brute force cracking with the waiting time. Eventually locking the phone completely.
Naruto:
They prevent brute force cracking with the waiting time. Eventually locking the phone completely.

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