I laid a logic trap and you stepped into it with both feet.

a) A local cell device connects your cell phone to your isp. NOT A TOWER. Gee, how could highly educated person of average intelligence miss that?

b) Your ISP is unique to you. Much as each cell tower is unique. And why I laid such a broad hint given the fact that you are looking for validation of a pre-conceived notion, not of actual facts. Making your IP address unique. T-Mobile is entirely aware of this.

c) The moment that your *CELL* is reporting to a different ISP, the IP address connected to your phone will be DIFFERENT. T-Mobile will know this, also instantly.

Your cell phone is unique. When you are able to make the most basic connections to how things actually work as compared to your desire to game the system, you might be a happier person. As it is, you are the slime that the cleaning help removes when bleaching the toilet - and about as useful.

If you enjoy being shown for the waste-of-air that you are, keep right on posting. Otherwise, go away.