Icloud activation ID

I need an activation of my icloud. The phone was sold by AT&T.

Below are the informations:

IMEI 354446068784815

Serial Number DNQNW8XYG5MJ

Model: iPhone 6 MM 64GB GOLD

Sold To AT&T MOBILITY LLC

Initial Carrier: US AT&T Puerto Rico and US Virgin Islands Activation Policy

Country: United States

Lock Status: Unlocked

Linked To Apple ID: c*****@yahoo.fr