Vodafone Pay Monthly SIM Only Vodafone has produced some amazing deals on its new Pay Monthly SIM Only plans. More minutes and texts than ever before for less cost. Not only this, there is no long term commitment as the deals only require 1 months notice. If you are happy with your current mobile phone but want better value talk plans then this is just the ticket for you. Alternatively, you can just take out a SIM Only deal if you are waiting for the latest mobile to hit the streets.