After spending some time in Europe, I absolutely loved the fact that I could use my T-Mobile SIM card in any phone. When I came back to the States, I was quickly reminded that I couldn't swap phones like I had grown accustomed to doing overseas.
With the recent announcement of Google's planned Android platform, networks are scrambling to keep current customers, while planning innovative solutions to attract new ones. Yesterday Verizon Wireless announced that it plans to open up its network to give customers the freedom to choose what cell phone they want to use. According to The New York Times, this is a huge advancement in the industry, especially for Verizon, which has been traditionally viewed as a stricter network.
Details and pricing are still being worked out.