Unfamiliar apps and missing data usage on iPhone

For some reason every time I try to ask about something along these lines I either get ignored, told something unhelpful or Apple deletes it. Anyone else feel like this should have more people interested and willing to discuss?


[Re-Titled by Moderator]

Original Title: Here’s a weird one. So they say look for unfamiliar apps. Ok I’ll check found two that don’t seem to exist. Next it says determine what’s using the most data. Well only some show any data usage nowhere near what’s being used, why might this be?

iPhone 16, iOS 18

Posted on Aug 25, 2025 6:04 PM

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Question marked as Top-ranking reply

Posted on Aug 25, 2025 7:58 PM

- have an app called astronomy that does not exist anywhere else on the device, never seen or heard of it before.

As Zachy said that is not an app and is a wallpaper and does use cellular data. Nothing to be concerned about, it's the one with the planets.


-check cellular under apps, only maybe a third of them actually show data used, totaling nowhere near what’s been displayed as used.

Never seen the totals match by adding up the listed apps myself either, but I also do not regularly reset my statistics to troubleshoot, and have not seen where Apple documents additional usage that does not fit nicely in an app category. Certainly cellular data is being used for other uses that are not noted with apps or even many of the System Services categories. You can check in the Support Article here and see that example screenshot does not even come close to matching app usage, even though all the apps are not listed. You also have the iCloud Drive and iCloud Backup switches you can turn off. If you want to contact Apple directly, you can also do that to see if you get an explanation. It has been reported many times here, but I have not seen where anyone has followed up by contacting Apple and provided an update.

Use cellular data on your iPhone or iPad - Apple Support

Contact Apple Support - Apple Support


-have found unfamiliar apps in the past that would not allow me to delete them, could not be found in the App Store or come up when searched

What apps are you referring to. You can provide a screenshot if you wish. They should still be there if you were not allowed to delete them.


Not sure why no one responded to your previous post, the Astronomy one has been asked frequently and the answer is readily available. Posts are only removed when the violate the Terms of Use for the site. I did not see your previous post, so have not idea what the reason would be. As long as you stick to the technical support questions that the site is designed for, it should be no problem. Of course, this is not a Social Media site where rants are a common place, so those would most likely be dealt with appropriately like you would expect.

8 replies
Question marked as Top-ranking reply

Aug 25, 2025 7:58 PM in response to ElGuyO

- have an app called astronomy that does not exist anywhere else on the device, never seen or heard of it before.

As Zachy said that is not an app and is a wallpaper and does use cellular data. Nothing to be concerned about, it's the one with the planets.


-check cellular under apps, only maybe a third of them actually show data used, totaling nowhere near what’s been displayed as used.

Never seen the totals match by adding up the listed apps myself either, but I also do not regularly reset my statistics to troubleshoot, and have not seen where Apple documents additional usage that does not fit nicely in an app category. Certainly cellular data is being used for other uses that are not noted with apps or even many of the System Services categories. You can check in the Support Article here and see that example screenshot does not even come close to matching app usage, even though all the apps are not listed. You also have the iCloud Drive and iCloud Backup switches you can turn off. If you want to contact Apple directly, you can also do that to see if you get an explanation. It has been reported many times here, but I have not seen where anyone has followed up by contacting Apple and provided an update.

Use cellular data on your iPhone or iPad - Apple Support

Contact Apple Support - Apple Support


-have found unfamiliar apps in the past that would not allow me to delete them, could not be found in the App Store or come up when searched

What apps are you referring to. You can provide a screenshot if you wish. They should still be there if you were not allowed to delete them.


Not sure why no one responded to your previous post, the Astronomy one has been asked frequently and the answer is readily available. Posts are only removed when the violate the Terms of Use for the site. I did not see your previous post, so have not idea what the reason would be. As long as you stick to the technical support questions that the site is designed for, it should be no problem. Of course, this is not a Social Media site where rants are a common place, so those would most likely be dealt with appropriately like you would expect.

Aug 25, 2025 8:12 PM in response to ElGuyO

ElGuyO wrote:

I still find it strange can see "astronomy" appearing in cellular under app usage.
in Settings and there is indeed an "Astronomy" entry that can be toggled on/off, complete with an app icon.
go to spotlight or search it, nothing comes up, I don’t see it anywhere.
Can you provide some information how to demonstrate and/or examine & confirm this?

It is not an app, it is a Wallpaper that launched 3 years ago and uses cellar data to note planet positions. Turn it off if you wish. Here is the some questions with the same answer from back then when it launched. It will not show up in a Spotlight search, and none of the other Wallpapers will either.

Astronomy in Cellular tab under settings - Apple Community

What is this mystery App ‘Astronomy’ that… - Apple Community

Why is " Astronomy App" appearing in my C… - Apple Community

I found a app called astronomy in cellula… - Apple Community


Aug 25, 2025 6:57 PM in response to ElGuyO

Astronomy isn't an app, but it is rather the minimal usage being used by the Astronomy Lock Screen wallpaper as it has to update the planet data frequently.


There are some apps that show in Cellular that you may not have seen before, such as we said Astronomy, Feedback which is for beta testers, Apple Watch specific apps, iMessage specific apps and many more.

Aug 25, 2025 6:27 PM in response to muguy

Ok so under cellular,


- have an app called astronomy that does not exist anywhere else on the device, never seen or heard of it before.


-Doesn’t come up on search yet it’s there, has a toggle switch but doesn’t show data usage..


-phone states have used over 40g under 24hrs


-check cellular under apps, only maybe a third of them actually show data used, totaling nowhere near what’s been displayed as used.


-have found unfamiliar apps in the past that would not allow me to delete them, could not be found in the App Store or come up when searched.


Aug 25, 2025 7:25 PM in response to Zachyy

Ok I hear you.. i do see that though im not seeing any that look like mine, could be nothing.


I still find it strange can see "astronomy" appearing in cellular under app usage.

in Settings and there is indeed an "Astronomy" entry that can be toggled on/off, complete with an app icon.


go to spotlight or search it, nothing comes up, I don’t see it anywhere.


Can you provide some information how to demonstrate and/or examine & confirm this?


how about any of the other stuff, any thoughts come to mind?


aren’t we supposed to be able to see where our data is being used?


i don’t think it’s even displaying a gig worth.


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Unfamiliar apps and missing data usage on iPhone

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