I bought an iPad air from someone off of craigslist. I made sure it wasn't iCloud locked, had any dead pixels, can connect to wifi, and checked for water damage. The iPad seemed good so I bought it from the man. The iPad that he was selling was, under my impression, the iPad air 16 GB wifi only model, however it turns out that this iPad is in fact the wifi+cellular model. I did not know this and the man did not list the iPad as the cellular model. Having dealt with some phones before, I made sure to check the IMEI online to see if it was bad or not. It turns out that the IMEI of the iPad is blocked, or on the IMEI blacklist. In the details it says that "This device is blocked by at least one carrier," and for the activation status it is telling me that the device cannot be activated. This is the T-mobile version of the iPad Air cellular model, if I recall correctly, all iPad air cellular models are unlocked, correct? Anyways, I wanted to know what this means for the iPad? Could I use it with other carriers such as AT&T? I know when a device is usually blacklisted, it cannot be activated on any carrier, is the same true with the iPad? Excuse my ignorance, just want to get to know as much as I can about it. I tried looking on google but didnt come across anything helpful. Also, will the IMEI being bad, will it affect me in anyway from using it as a wifi model? Thanks in advance.