In a blog post published today, T-Mobile CTO confirms what we already heard last month: the company is working hard on upgrading its network to fully support the iPhone:

A nice side benefit of the refarming effort is that our 4G network will be compatible with a broader range of devices, including the iPhone. The other important benefit of our network modernization effort is the coverage improvements it will deliver, especially when it comes to in-home coverage.

It would sure be a welcome gesture for the one million T-Mobile customers who currently have to use their iPhone at 2G speeds.