Spotlight Search Not Working on iOS 12.1

Hi,

I’ve recently updated to iOS 12.1 on my iPhone 8 Plus, although this issue was also present in iOS 12 (I updated to try and solve the issue).

Basically, whenever I got to spotlight search and search for anything, I get no results - the same issue occurs in settings when I try to search for a setting. I've done some googling and can't seem to find anybody reporting the same issue as me.

I also have an iPhone 6, running on iOS 12, and spotlight search and search in settings works perfectly.

I have attached a screenshot of trying to use spotlight search to find the app Amazon, which I have downloaded on my device. After pressing search, the Siri suggestions stay, and nothing appears. After about 5 seconds, the Siri suggestions completely dissapear and the options to search web, app store, and maps appear about 5-10 seconds later.

I found some suggestions of changing the language region, restarting the device, and then switching it back again. This did not work.

Any help would be much appreciated,

Thanks,

Jake