Iphone draining data through unistalled apps and draining battery
My iPhone 8 has been draining data like crazy for the last week, like 1.4 GB in one day. On my mobile data page it says almost all of the data is from uninstalled apps and system services (see attached photo). Note I reset my stats and did not delete any other apps. I have reset, rebooted, erased and restored my phone. I have tried a different phone, switched sim cards and signed out of my Apple ID. The problem was on the previous IOS, and persisted after the new update. Does not drain when on wifi. My apple ID/ icloud seems to be the problem, if I'm signed in on my apple ID the draining occurs but on anyone else's it does not do this. My country does not have apple stores- only resellers and they also don't know what is happening and official apple support can only help me Monday-Friday. Please if anyone has a similar experience or advice, please help.
iPhone 8