How much storage is required for iOS 18?

My phone has a total of 64 GB of storage.


I’ve offloaded nearly all my apps and also deleted a couple. My phone originally said the upgrade was 7.08 GB, and so did the 17.7 update, so I figured just skip the 17.7 and do the iOS 18, so I freed up the necessary space for 7.08 GB. It then said I had enough space for the 17.7, but not the 18. I decided to just do the 17.7 and then see if I could try to get iOS 18 after the update, and when my phone finished updating to 17.7, I checked the “upgrade to iOS 18” and the storage it said it needed CHANGED TO 14.71 GB. UM WHY????


Also, the update for 17.7 on my mother’s (iPhone 14 with 128 GB) and sister’s (iPhone 12 with 64 GB, same as mine) phones said the update was about 716 MB while the iOS 18 was about 4 GB.


My main question is why do both of those updates on my phone require more storage than theirs if it is the SAME UPDATE ROLLED OUT TO EVERYONE?? Even if it has something to do with all the stuff I have on my phone, it is all offloaded now, so …??? And, even regardless of THAT too, I don’t understand why it says iOS 18 is literally nearly 15 GB like what….????


My storage is now 53.87 GB and I literally have no idea what else to offload/delete.


[Re-Titled by Moderator]

iPhone 12, iOS 17

Posted on Sep 16, 2024 5:13 PM

Reply
Question marked as Top-ranking reply

Posted on Oct 27, 2024 12:25 AM

Hey, Problem solved after reading this thread. Weeks ago I updated to 17.7 and it offered me 18. I have an iPhone 11 , 64 GB. But I had 6.71GB of free space and it said I needed 13.7. For weeks I have been trying to figure out what to do and it sounded like my problem may be even worse than I tought after reading of the issues that many here were having,

But I just did the update using iTunes and my PC and I only lost 1 GB or so of space.., It was easy as pie. I never use iTunes but had it on my Windows 10 desktop, I updated the program, plugged in the USB and it offered me the update, It may have taken half an hour and all the while my phone was still showing that it would not update while on Itunes I could see that it was downloading then preparing and then installing. So thanks for the help and now I will take a quick look at iOS 18.1. My wife is bugging me to go to bed as it is 3:23 am

36 replies
Question marked as Top-ranking reply

Oct 27, 2024 12:25 AM in response to why_must_this_happen

Hey, Problem solved after reading this thread. Weeks ago I updated to 17.7 and it offered me 18. I have an iPhone 11 , 64 GB. But I had 6.71GB of free space and it said I needed 13.7. For weeks I have been trying to figure out what to do and it sounded like my problem may be even worse than I tought after reading of the issues that many here were having,

But I just did the update using iTunes and my PC and I only lost 1 GB or so of space.., It was easy as pie. I never use iTunes but had it on my Windows 10 desktop, I updated the program, plugged in the USB and it offered me the update, It may have taken half an hour and all the while my phone was still showing that it would not update while on Itunes I could see that it was downloading then preparing and then installing. So thanks for the help and now I will take a quick look at iOS 18.1. My wife is bugging me to go to bed as it is 3:23 am

Nov 3, 2024 8:08 PM in response to why_must_this_happen

Long story short about 1.5GB on my 64 GB iPhone 11. It told me that it needed 13.7 GB for the installation and I only had about 6 of space. I kept Googling and investigating until someone posted to use iTunes. So I plugged my phone into my computer that had iTunes which I never even use. Itunes updated itself and then did the update on my phone which took about half an hour. I read about people needing 10 min to 2 hours. When mine was finished I had about 1.5 GB less free space, So I assumed that whatever the 13,7 GB was needed for took place on my computer rather than my phone.

Hope this helps

Tom

Sep 17, 2024 5:44 PM in response to why_must_this_happen

[Scroll to the end of this comment for most recent update/TLDR]


UPDATE: I am currently using a computer to update as was suggested. I downloaded iTunes on the computer and got everything set. It now says the software update is 8.01 GB—still double the size of my mother, sister’s, AND now my father’s file sizes (after I asked him later last night how big it said the size of the download was on his phone), but at least it doesn’t say almost 15 GB anymore…


Anyways, I was originally at “45 minutes remaining” a few minutes ago but it decreased down to “3 minutes remaining” just a minute ago. As I’m finishing typing this sentence, it has about 10 seconds left.


Okay, now it’s done downloading. I’m going to see what will happen next.




…Okay it’s about 1.5-2 hours later now. The update that I said had finished downloading actually never installed? So I had to redo all that again, which the backup took I think as long as the update… (it automatically started a backup every time I plugged my phone back (I have a touchy lightning cable) into the computer, so..).


TLDR/most recent update:

Long story short, I did finally get the iOS 18 update/“upgrade”, but I had to plug my phone into a computer, download iTunes on the computer, and wait over an hour for my phone to update.



Also, funny thing is the computer I was using was my mother’s and I had forgotten that it wasn’t able to turn on after a recent power outage so I had to fix THAT first lol…. Busy day…

why_must_this_happen wrote:

My phone has a total of 64 GB of storage.

I’ve offloaded nearly all my apps and also deleted a couple. My phone originally said the upgrade was 7.08 GB, and so did the 17.7 update, so I figured just skip the 17.7 and do the iOS 18, so I freed up the necessary space for 7.08 GB. It then said I had enough space for the 17.7, but not the 18. I decided to just do the 17.7 and then see if I could try to get iOS 18 after the update, and when my phone finished updating to 17.7, I checked the “upgrade to iOS 18” and the storage it said it needed CHANGED TO 14.71 GB. UM WHY????

Also, the update for 17.7 on my mother’s (iPhone 14 with 128 GB) and sister’s (iPhone 12 with 64 GB, same as mine) phones said the update was about 716 MB while the iOS 18 was about 4 GB.

My main question is why do both of those updates on my phone require more storage than theirs if it is the SAME UPDATE ROLLED OUT TO EVERYONE?? Even if it has something to do with all the stuff I have on my phone, it is all offloaded now, so …??? And, even regardless of THAT too, I don’t understand why it says iOS 18 is literally nearly 15 GB like what….????

My storage is now 53.87 GB and I literally have no idea what else to offload/delete.


Oct 9, 2024 5:36 PM in response to leeMsk

Update:


I’ve finally managed to download iOS18 on iPhone XS.


This required me to delete every single app I could, in order to acquire the 14GB space that was required of my device.


After installing iOS18, ally the glitching and malfunctioning issues I had with my phone, vanished.


My device immediately started functioning like a brand new phone.


So if you’re encountering issues with your phone on iOS less than 18, try all you can to install 18, you’ll thank yourself.



Sep 20, 2024 4:26 AM in response to why_must_this_happen

Check your system data in your iPhone storage to see how much space it's taking up. Unfortunately, there isn't a simple way to reduce it with just a few clicks. However, you can try some methods that might help free up space. Follow steps from this tutorial , and see how much system data you can clear. Once you've done that, try installing iOS 18


[Re-Titled by Moderator]

Sep 29, 2024 2:34 PM in response to kban495

kban495 wrote:

Yeah this is crazy. I've off-loaded almost all my apps. Have 21G free against needing almost 15G to install iOS18. IT STILL SAYS I DON'T HAVE ENOUGH STORAGE! Giving up. First time Apple failed me.

Force Restart your iPhone, then try the update again. You won't lose any data or settings --> Force restart iPhone - Apple Support


Sep 18, 2024 4:08 PM in response to why_must_this_happen

I have iphone se 2022 and mine came in at 10.53GB I dont know why either. I barely have anything on my phone either. Perhaps this is why the ios 18 destroyed my icloud storage. It did give me back a ton of iphone storage but it destroyed the icloud storage. After further research I believe there is a database corruption in the icloud backup storage which is causing the backup storage to increase instead of get smaller. When u delete old backups and backup again the backup should decrease not increase. This problem started in ios 18

Sep 18, 2024 10:19 PM in response to why_must_this_happen

I’m under the same predicament!!! I’ve tried skipping 17.7 and installing 18 but it kept refusing, saying I need 6GB. Of which I had plenty of storage. Cleared almost all my apps, had more than 10GB available but it still refused.


I just installed 17.7 now, thinking once I’m done with it, it would let me install the 18.


The shock I just got when I saw the 6GB that was initially required for installing 18 has changed to 14GB?!!


Like?! I have nothing else to delete.


At this point, Apple is just forcing us to buy new phones. Making things difficult for us because they now have a new phone on the market.


This is so frustrating coz my phone is all of a sudden glitching and malfunctioning out of the blue!

Sep 22, 2024 10:02 PM in response to why_must_this_happen

Same exact issue for me! I’ve deleted everything in the “Review downloaded videos and audios,” offloaded apps, deleted apps and Spotify downloads….everything possible. It now says I’m at 51.09GB/64GB, which is apparently not enough, as others in this thread have said. If this update will be necessary/ideal for iPhone functioning, it should not require an unrealistic amount of storage. Please help @Apple.

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How much storage is required for iOS 18?

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