I'm sim only with Vodafone but not on one of the unlimited plans. Recently renewed and sure I read I'd have access to 5G on a data capped plan. That said it's of no interest to me as living and working rural there will be no 5G any time soon. That and my current S10 doesn't have access to 5G either. On the S20 and S20+. According to Marques Brownlee anyway!