I want to lock my device so it should be unlocked before it can be used, I've tried several programs but all of them have issues, like you can answer an incoming call without unlocking the device first, or they're not secure enough, or outdated, .etc..

Any recommendations of a good screen-locking solutions?

S2U2

Thanks for the suggestion

[mpg187]

Do you mean lock to prevent accidentally pressing buttons/touchscreen, or to prevent unauthorized access?

I want a program to prevent unauthorized access, and S2U2 looks like it's not for this purpose.
Any other suggestion?
Thanks.

[mpg187]

What I do is set my phone to lock after "0" minutes and push the power button and it will ask for a password when turned back on.

Sure, but you still can answer an incoming call without entering the password, which I don't want.

Thanks for your help.

[mpg187]

It takes long enough to answer without having to enter a password.

I mean the call shouldn't be able to be answered without entering the password first, is there a way to do that?

[mpg187]

Not that I know. I am saying for me it doesn't matter. Unless it's a call from someone I don't know and they don't know my voice. But if it's like a friend who knows my voice...

So can you suggest a program which locks the device when there's an incoming call so it can't be answered, if the phone isn't with me, without entering the PIN first?