iOS 12.1.4 is the latest release is an essential upgrade for all iPhone and iPad owners. Unfortunately, that essential status means you’re also set to experience some nasty surprises… 

‘Great Secret Features’ and ‘Nasty Surprises’ are my regular columns investigating the best features / biggest problems hidden behind the headlines.

The problem is Apple iOS 12.1.4 not only introduces some new bugs, but it also carries over serious WiFi and cellular data problems from previous releases (1,2,3,4,5) and they are affecting iPhone and iPad owners who had previously managed to avoid them.

“@AppleSupport I updated iPhone 7 Plus yesterday with update 12.1.4. Cellular data virtually none existent!  .06-.10 speed. Did all the workarounds could find. Even reset phone. No change. Help!” - source

“@AppleSupport I went to AT&T to troubleshoot the problem. I’ve restarted the device, took out the SIM, reset network settings, deleted the update and reinstalled 12.1.4, still showing “No Service” - source

Source:  forbes