Whilst India has pretty closely followed anything that has been implemented in the United Kingdom, the Gulf region has not implemented the more draconian bans. So while there may be more scrutiny, you should be fine with your cel phone and laptop. Duty free sales are business as usual here, although don't plan to pick up a bottle of Johnny Walker departing RUH.
Of course, everything could change tomorrow, and it would be prudent to contact the airlines you will be travelling on.