This is a copy from DiamondElite from the Telus forum and thought a Sticky like this will help users once and for all understand which phones are and are not compatible with Bell's new HSPA network.
This should clear things up. If the Green Box frequency is not listed on your phones specifications for UMTS / HSDPA / HSUPA / WCDMA then it is NOT compatible with the new network.
Phones unlocked from Rogers or Fido will only work if they have the specified Green Box frequency as above.
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