advice needed plz!!

[handyn]

hey guys
today i bought verizon iphone 5 (a1429 cdma)
I heard all the verizon iphone5s are unlocked so i tried to use my at&t sim card. however, i only can make call and text, I cannot use 3g on it.
anyone have an idea? my phone is locked?

 

[Thomasjtsi]

Please refrain from creating dulpicate posts covering the same question. Keep all discussions regarding this here... http://www.iphoneforums.net/forum/iphone-5-59/advice-needed-plz-49868/. CLOSED!