Hello,
I ported out from Optus today after having enough of their horrendous service. I ported to Amaysim and I know that they use Optus 4G+. I only had the sim card active for a matter of an hour and I went on 3 websites and it used 150MB of data. I have to admit that the internet speed does seem faster than when I was with Optus themselves. So far, over 5 hours (having wifi at home also) I have used 250MB, this is compared to me using my phone for the past 7 days with Optus and only having used 850MB. Is there something that I have done wrong because it seem a bit excessive and I've never had this problem before? I am just fearful that my 7GB will be gone in not time and that it is being used unnecessarily although nothing has changed since I was using Optus.
I have a LG G4.
I look forward to hearing from you and thanks in advance.
Maybe your phone decided to download a big update? There should be an audit screen under settings to show you which app consumed the data. You can also set the phone to update only via WiFi.