Looking to upgrade to s24 ultra and trade in an s21 +. It says the monthly cost for the essentials plan was £30 but is half price for months. However it also says that there is a trade in discount of £27 meaning, the monthly cost is £3 per month. Will that discount remain for the whole 24 month air time contract, i.e, will the price stay at £3 for 24 hours (i appreciate there is a CPI increase each march), or will the trade in discount drop off after 6 months, massively increasing the monthly commitment? Its not clear sorry
