When an ion cyclotron resonance heating (ICRH) antenna array is phased (Δϕ ≠ 0), the excited asymmetric k11-spectrum can drive non inductive currents by interaction of fast waves both with electrons (transit-time magnetic pumping (e-TTMP) and Landau damping (e-LD)) and ions at minority (fundamental) or harmonic cyclotron resonances depending upon the scenario. Based on earlier theories, we present a simplified description that includes the minority-ion and electron current drive effects simultaneously in a 3-D ray tracing calculation in the tokamak geometry. The experimental results of sawtooth stabilization or destabilization in JET using the minority-ion current drive scheme arc presented. This scheme allows a modification of the local current density gradient (or the magnetic shear) at the q = I surface resulting in a control of sawteeth. Predictions of the above model of current drive and its effects on sawtooth period calculated in conjunction with a model of stability of internal resistive kink modes, that encompasses effects of both the fast particle pressure and the local ( q = I) magnetic shear, are found to be qualitatively in good agreement with experimental results. Further, we discuss results of our model of fast wave current drive scenarios of magnetic shear reversal with a view to achieving long duration high confinement regimes in the forthcoming experimental campaign of JET. Finally, we present results of minority current drive for sawtooth control in next-step devices such as International Thermonuclear Experimental Reactor (ITER).