@marilynrkb
There has been a few complaints lately of unusually high data usage with normally low data users. Do you employ all of your data saving options? Do you use and reset your data tracker each 30 days? Do you have your data saver enabled? Do you have all your background data usage for apps off? Go thru reach of your apps data usage to narrow down the culprits burning thru your data. They can sometimes have a glitch and remain running in the background. Look for apps that run video such as YouTube, Instagram or tictoc. Is it possible you downloaded a rogue app? Or accidently had a software update while on mobile data? Do you have an iPhone with WiFi assist On? Going thru your daily usage history you can note the twice daily data usage updates to see in which 12 hour increments that you have used large amounts of data.
I suggest using your data trackers ability to set warnings and limits. I have mine set for 25% (warning) and 50% (limit). This way if unusual data usage happens without my knowledge I am warned and then my data will shut off when it hits my preset levels. That way I am warned well before pm warnings are sent to me and with data add ons no warnings are sent. If you have numerous data add ons not using data limiters can have expensive consequences.
