What is the Android soft menu key?

the keys on right and left of the middle key on you android smartphone. Those are the soft keys. Soft keys are those which donot require us to apply force to make them work or to activate them.

What are soft keys on a phone?

Softkeys are buttons underneath the display of the phone that provide different options which change based upon what is available to you at the time. There are 3 softkeys on the cordless phone and these options change as you choose different options.