My old S5 was stolen in February and reported it as stolen immediately. I got a new unlocked S7, activated it, and noticed insane amounts of data usage (even after I turned mobile data). After calling Verizon regularly, they noticed that it was all coming from the 3G network with the S5's IMEI number. The 4G network is only used by the S7's IMEI number, which matches with the data use measured by my phone. So somehow the thief who stole my phone was is connecting to the network and the data is being billed to my account. Verizon promised to fix it and didn't, of course.
The people who were supposed to call me back never did, so now I have to start over with new tech support people who now can't find the S7 IMEI number using data at all. Somehow they think this proves that I'm the one using all the data, not the thief, even though they are clearly seeing that all the data is coming from the S5.
Does anyone have this problem? How did you fix it? How did you convince Verizon it's a problem? And why has Verizon been so incompetent throughout this whole ordeal?
(And because everyone is going to suggest this, data saver is on. All my apps, except for Android core apps, are blocked from using background data. The "switch to mobile data" setting (switches to data if wifi is slow) is off. And again, mobile data has been mostly off for the past two months. I have turned off so much stuff on my phone it's basically an expensive, frustrating brick.)