
Plot hole: Considering how important it is to the Analyst that Neo stay connected to the Matrix at all times, it is unfathomable that his body in the real world is unguarded. While keeping an eye on him inside the Matrix at all times is difficult, there is no reason whatsoever that he should be left alone inside his pod with no security for even a second. This is an entirely different scenario than the original 3 films where resistance fighters finding Neo was integral to the machine's plans.
Answer: It wasn't his cell. He took Chrissie's cell.