Remove the strike plate on the door jamb as well.
How to change security door lock.
The most comprehensive method of ensuring security it involves removing the existing lock from the door including the handle if it s a handle lock combo and then installing.
Most electronic locks come with two screws that you need to remove from the inner part of the door.
Do not skip this last step.
If your new lock is the same brand and model as the old one you may be able to keep your existing latch plate and strike plate.
Remove the latch assembly doorknob.
Check the back part to find the screws that are holding on the back cover.
First remove the lock from your door following the manufacturer s directions.
You may also need to use a wire tool or a paper clip.
Remove the screws from the old lock on the inside of the door.
Turn over the lock so its keypad faces downward.
Use a phillips head screwdriver to unfasten the two or three screws located on the inside knob plate.