Following in the footstep's of O2's Simplicity tariff, T-Mobile is to offer a "Just SIM" plan with the freedom to move after 30 days.
Like the O2 versions, the plans are aimed at anyone who already has a mobile they're happy with, and don't want to get locked into a long-term contract.
Just SIM works on rolling one-month contract basis so with a 30-day notice period, customers are free to switch.
Anyone opting for the new scheme will get a free SIM card and can choose between three new price plans for £20, £30 and £40 per month with various inclusive texts and minutes.
The call costs come in at 30p for anytime, any UK network calls and 10p for anytime, any network texts. T-Mobile claims the packages on offer are as good as some of their 18-month contracts.