Why, no. No it isn't!

Okay, I'm being cheeky, but there is definitely a good reason for getting a 3G Kindle onto a SureSignal. Even when the Kindle has successfully connected to the WiFi, I find it still tries to connect to the telephone network, even when it's asleep. I can hear this if I have it next to my speakers because I get the usual diggedy-diggedy-dig-dig-dig noise. In an area like mine the Kindle will never get a signal without the use of the SureSignal and so it runs the battery flat in no time. If I could disable the 3G independently of the WiFi, then all would be good - I could take advantage of the syncing without having to worry about the Kindle running out of steam. If I'm honest, I wish I'd gone for the WiFi-only version.