Thanks for your answer D/\SH. Because I see that we can unlocked many PDAs which belong to ATT or T-Mobile and make them can be used with another carriers and in many countries (without using any special tools, only usb cable + active sync is enough), so I hope that we can have another way to make i910 can work with another service provider (such as Nextel, ..). I'm still waiting another good news from you...