I kind of disagree with the previous comment. you can rent a phone from companies like Israelphones (which is what i did last time i went before the yomim noraim) i paid a dollar for rental and 19 cents for calls in israel(it comes out to a little more than half a shekel per minute). you talk as you need and don’t find yourself stuck trying to find a kiosk to reload minutes. it saves alot of hassle, and if you need you have someone to turn to who speaks english
Hatzlocha