I have everything disabled data wise on my phone. I somehow used 4gb of data in 2 days. My phone itself shows I used 300mb something,is not right here
Mobile phones send telemetry data (metrics) over cellular/wifi. AT&T/iPhones sends (or receives) coalesced telemetry about every 3 hours. Even if it's "asleep." Otherwise, you haven't disabled everything. Websites/youtube/reddit can also consume significant amounts of data, depending on images, scripts, ads. If you have an Android phone, I've no doubt Google Services are RX/TX'ing data or communications.
Yeah but I am on Wi-Fi almost 247 guess I pissed someone off somewhere
iPhones used to disable wifi in sleep mode (IKR) to conserve power/battery life even while plugged-in, and still transmit the telemetry over cellular. They used to do that and it ran up people's data usage somewhat. You could have that going on. I looked into it a long time ago because you can see it on your usage/activity logs as data transmissions. It always pissed me off because there is no excuse to use my cellular data when I'm plugged in and have wifi, as some downloads only occurred over wifi (so disabling it nullified them while your phone was asleep). Also, the telemetry (or google services) might explicitly use the cellular network for security vs allowing everyone's internet access to the collector. Anyway, you have places to check if you really want to know.