dna restart trick

[rootntootn]

I appeared to have hung my device out to dry a few times now. In the 'old' days pulling the battery and then replacing it would be the fix to be able to restart into recovery or fastboot etc etc. On the DNA holding down the power key until the 3 lower navigation keys blink has worked a few times although I am never quite sure if it's going to work (or exactly what I did). Most recently my phone was frozen in one of those "android has stopped working" messages and I could do nothing, I did the holding down power bit and got a message similar to: "continue to hold down power key to reboot phone for x seconds" x being 1 or 2 seconds on my device. It did not work (and was held for way longer than the 1 second)...after several trys it did manage to get it to work restarted and I was able to get into recovery and all was good. My question- is there a foolproof way to turn off the device or a proper method for doing so? That is when the phone is frozen or when the 'usual' methods fail?

 

[uppon2]

You need to hold down the power button for between 10-15 seconds for a successful reboot.

 

[zone23]

Sometimes it needs to be plug into the charger or USB in order to reboot. So you plug it in then hold down the power button until the lights flash and it reboots.

 

[rootntootn]

You need to hold down the power button for between 10-15 seconds for a successful reboot.

i held it for more than 30 sec and still no reboot, doing it multiple times eventually got me there, the good news is i guess is it CAN be done-thanks for the info