Q: Please help me to activate, I have not met the previous owners

Hello tambokobee,

Welcome to the Apple Support Communities! I understand that you are having issues activating a device. Is this an iOS device that currently has iCloud activation lock enabled on it? If so, you’ll want to contact the previous owner to unlock the device:

Find My iPhone Activation Lock: Removing a device from a previous owner’s account - Apple Support

http://support.apple.com/en-us/HT201441

Additionally, you can check if a device is currently locked to an account with this link:

https://www.icloud.com/activationlock/

Otherwise, if this is an iPhone that you need help activating with your carrier, please see this resource:

Get help activating your iPhone - Apple Support

http://support.apple.com/en-us/HT201407

Cheers,

Matt M.