Sprint M9 on AT&T

[bo_woods]

Does the Sprint HTC One M9 work well on AT&T?

Sprint and other carriers have to unlock devices upon request that are in good standing

Has anyone done this, they both seem to use the 1900mhz LTE frequency...

 

[IAmSixNine]

Wont work very well as the two units are very different. Sprint is a CDMA / LTE variant of the device and the ATT unit was GSM/LTE variant.
So some services might work but your better off getting an unlocked GSM or an ATT version.