I have not received the September OTA security update and from what I have seen, I am not the only one. In fact, I think the majority of OG Pixel XL owners have not received the update. My Pixel XL is running Android 9 Pie on the T-Mobile network. Is this a device issue? Is this issue related to T-Mobile and its MVNOs including Project Fi? It would be nice if there was some rhyme or reason to this issue.