Hey si_riza,
Thanks for the question. If the device is asking for your Apple ID and password, it sounds like it has not yet been disassociated with your account. Let’s check that:
Find My iPhone Activation Lock: Removing a device from a previous owner’s account
http://support.apple.com/kb/TS4515
1. Sign in to their iCloud account at www.icloud.com/find.
2. Click All Devices to open a list of devices linked to their account, then select the device to be removed. It should show a gray dot or the word “Offline” next to the device name.
3. Click "Remove from Account" to remove the device from their account.
After the device is removed from the previous owner’s account, turn the device off by pressing and holding the Sleep/Wake button located on the top-right side of the device. Then restart your device and proceed with device setup as you would normally.
Additional information:
What to do before selling or giving away your iPhone, iPad, or iPod touch
http://support.apple.com/kb/HT5661
iCloud: Find My iPhone Activation Lock in iOS 7
http://support.apple.com/kb/HT5818
Thanks,
Matt M.