Does CoreESIM function in the Chittagong Hill Tracts of Bangladesh?

In the Chittagong Hill Tracts of Bangladesh, CoreESIM users will generally find network coverage in larger towns and administrative centers such as Rangamati, Bandarban, and Khagrachari, where local carriers maintain infrastructure. However, when venturing into more remote, mountainous, or densely forested areas away from these population centers, cellular signal will likely become weak or entirely absent. The rugged topography and sparse population density inherently limit widespread network deployment in these regions.