Imei number
Where is the IMEi number
iPad mini, iOS 9
Question marked as
If the iPad is a cellular model, it will be on the back of the iPad where all the text is, or in Settings->General->About->IMEI.
If the iPad is a Wi-Fi only model, it will have no IMEI number anywhere.
Link-> Find the serial number or IMEI on your iPhone, iPad, or iPod touch - Apple Support