Tri-band Without 900 Useless?

[DRNewcomb]

Originally Posted by Effendi

It's not a legend, it's true in some places, it depends on the priority given to one of the 2 bands.

It depends on if the carrier decides to implement a control channel on the 1800 MHz side or not. 1800 MHz can be used simply as an expansion of the 900 MHz band if they want to, just the way that E-GSM (the first extension of the 900 MHz band) is used. If the phone can't access the requested channel number then the system gives it one it can access. Without a control channel in the 1800 MHz band an 1800-only phone will not be able to use that signal.