No Cellular Data Section on Settings list (iPad Pro, iOS 12.0.1)

Hello, guys

Recently, I have updated my software to the latest version 12.0.1 from 12.0. Had installed 12.0 iOS on my iPad, it was a decent update, and I have experienced no problems with it since it was up-to-date (until the recent update became available to download).

When I installed 12.0.1, I lost my Cellular Data & Personal Hotspot sections from the Settings list, so that I CANNOT set anything with the respects to these options. Luckily, there is still the “On/Off” button available when I swipe down the screen (from the top right). However, if I turn it off, and then turn it back on, I will NOT be available to connect to the Internet, and I will have to go through a very long process to get it back (in case, one’s wondering what it is to go through: a) Turn on Airplane mode, b) take out SIM card, c) switch off the device, d) switch it back on, e) turn off Airplane mode, f) put the SIM card back, g) turn Cellular Data on, and finally you have got a chance to reconnect back to the Internet).

Long story short, after I had updated my iOS to 12.0.1 from 12.0, I lost all of the possible ways to edit/set the settings for my Cellular Data as there is NO section for it on my Settings list anymore. P.S.: I have got a WiFi+Cellular model of iPad.

Any idea how to fix this?

Thank you in advance!

P.S.: I bought the iPad Pro in the USA, and now I use it in Ukraine, where is no official Apple Store or Apple Support & Service Center.