There are many reasons your phone uses more data than it did the day you bought it. Not one has anything to do with Verizon, or any carrier. Before you go off in a huff and uneducated about how data is used on your device, do some research.
Understand how your phone has it’s own data meter. Look in the settings and see exactly what app or service is using data.
This is a bit older and written for ATT users, but its still valid information: Data Management - Cause for gray hair, hair pullin... - AT&T Community
I have notice an increase in my data usage, with no changes in habits , but this month alone used up all my data and still 20 days left in month? No way. Something is wrong here . and believe its verizon doing so as the keep trying to sell be a bigger plan. Time to check out other options.
ANDPIE6, I can understand wanting to make sure your data is tracked accurately. We always want you to have the right information, so you can make the best decisions, and find the right plan for your needs. Before switching to unlimited, I sometimes had questions on usage, which is why I reviewed a few things to check on the data. I'll be happy to share these tips and help review your data, as we don't want to see you leave the VZW family for something like this.
First, can you share what kind of phone you're using? Some models of phones have great data monitoring tools and are a good backup to what's tracked via My Verizon. How do you normally track your data?
Finally, how often are you connected to Wi-Fi? Wi-Fi usage helps reduce data use, and sometimes if a Wi-FI Network failed or didn't connect, it can lead to higher data. I had that happen to me in fact with my workplace Wi-Fi. It took a few days to realize what happened, and sure enough, I had higher usage that month without changing my habits.
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Same issue here this month. Burned through 38gb (RIDICULOUS) of data when have never used even close before. Turned off pretty much all data for last 3-4 days on all 3 devices. Then on last day Verizon says I have used . Historical data usage has been 10-12gb (and even that seemed excessive). This is getting outrageous.
And before Verizon reps provide their canned response and questions, have 2 iPhone XS and 1 iPhone XR. No change in usage pattern. Will be looking at other carries soon, I think.