iPhone X Excessive Data Usage

This issue isn't unique to iPhone X. I have the X and my husband recently purchased iPhone 8. Same problem😖

If you have cellular data turned off and it is still using data then either yes, something is definitely wrong with your device or a thief somehow cloned the SIM card that came with your iPhone X and is using their device to download data.

Apple is correct is saying that the phone should not use data while cellular is turned off.

Unfortunately, that does not necessarily mean the carrier would show no data being used during that period.

There is a rather big challenge for a user who is trying to match cellular data usage on the phone with carrier records. The user in looking at the carrier record sees data usage typically as it is invoiced rather than necesarily at the time it was actually used.

The problem relates to two separate issues: first, data usage recorded by the carrier is normally higher than what is recorded on the device and second, there can be major differences in timing as the phone records data as used while on the account data usage the carrier shows it when invoiced. For some carriers, especially, MVNOs, this makes reconciliation impossible.

So if your carrier is showing data usage while you actually have the phone turned off, it does not necessarily mean anything nefarious is happening.

However, if you are using a major carrier the lags between invoicing and use should not be large unless data roaming is involved.

Let's hope the matter gets resolved during your appointment.

Hi

Go to settings down to each app turn mobile data off on each one you only need to work with your wifi not mobile data.

Go to i books download ios 11 user guide &iPhone X guide both are free.

Cheers

Brian 🇬-1F1E7;

I live in Canada. There are 4 major carriers (hence why some of my posts are in French):

Rogers (and flankers)

Bell (and flankers)

Telus (and flankers)

Shaw (through Freedom Mobile only in BC, AB and ON).

In Quebec, Freedom is replaced by Videotron

In Saskatchewan, Freedom is replaced by SaskTel

Not all providers in Canada are listed, but the major ones are.

My phone definitely does not chew through data when the WiFi is on. I have everything running full tilt and I have never experienced this. I find the phone to be more accurate in terms of Data usage because it might take as long as 24 hours for it to even appear online under my account. I will agree that reconciliation would be almost impossible. Data roaming on my provider might take up to a month to be reflected, but once again, I would use the data logger on my iPhone.

None of those are MNVO's however. The flankers might, but I don't think so.

I don’t think there is a reasonable solution yet. Turning off cellular is not an acceptable option to me considering the cost of these iPhone Xs. It renders the phone useless (no calls, text, email etc while it’s turned off). I was also burning cellular data while on my own WiFi AND while at school teaching. Our only viable choice, to avoid overages, was to the VERIZON Unlimited Plan. For years, we shared 12g between mine and husband phone and NEVER had an issue with cellular data being utilized at inappropriate times.

Hi All,

I am also experiencing this issue.

Issue: I have my mobile data on and connected to my home wifi, however, my data usage is still being deducted from my mobile data allowance. Insane! I was wondering how I could chew through 6GB a month!! + 1GB top up. Luckily I looked more into it, when I got notifications stating I had 500MB data usage left, and, whilst surfing on my home wifi, I got another notification saying I had 200MB left!!

I double check that I'm connected to my wifi connection. I start surfing the net and watching youtube again, I then proceed to check my telco provider app for my usage and to my not so suprise, I have used up 100MB.

Workaround: Turn off my mobile data.

Don't tell me about wifi assist, and turn off location services or apps chewing up data. Using previous models of Iphone, such as iphone 6, we all could clearly log onto our wifi at home and not worry about our phones using our telco provider data usage. Apple needs to acknowledge this is a problem. Surely Apple knows this is a problem, and I will be gladly creating a video and uploading it to show them and everyone there is a real problem here. I will upload the link to this forum soon.

I also think, everyone who has been overcharged with excessive data usage should be reimbursed by Apple.

I‘m from Germany, having Vodafone as provider. All the same issues you reported I‘ve got myself, too. With an iphone8 and since 11.4. currently 11.4.1. More, the excessive usage of 800 MB per 6 days without using anything came with two interesting aspects:

1. the sum of all apps and services amounted to 45MB, the excess was not traceable

2. the Vodafone app also showed this amount but the call center confirmed the 45MB usage!

Resetting the iphone first killed the system, new installation was necessary and for half a day everything worked fine. Today, again, MB are counting up without any link to an app/system service....

Crap ios11.4 I assume

Turn off WiFi assist - that feature will cause your phone to use cellular data whenever it feels the WiFi connection is poor and there would be an advantage to using cellular data.

About Wi-Fi Assist - Apple Support

I'm having the same issue. I got the Iphone X three weeks ago and have used over 16GB. I called ATT and all they did was give me a $25 credit. Were you ever given any answers?