Each device comes with a different IMEI number, in other words, every tablet is unique like the people with the different ID card. However, the problem is that many people will ask us to have the IMEI number and where can them find it. We are Alldocube Tablet online store that each machine we sent out with the IMEI number that we have attach on the back side of the machine or on the box. More question please tell us at here: http://www.cube-tablet.com/buy-products.html