>>103153You must have a strange provider if that is the case. Most of them route connections through centralized PoPs, leading to pretty stable mobile IP addresses. So stable in fact that you have to disconnect the underlying wireless connection by airplane mode or rebooting to re-dial your internet connection.
As far as I remember, some Americans did have problems with their ISP kicking them around between different IPs on 3G and 4G, but since the former is falling out of use, this is no longer a problem.