Is there a way to access and view/modify APN settings on IOS 9.0.2
Bad news... good news.

Bad news... cellular APN settings are disabled on by carrier and/or iOS 9.

Good news... you can create the appropriate APN settings profile via your mobile browser of choice at unlockit.co.nz

Just select your country/carrier and tap Create APN, follow the prompts and that's it.