screen time, explained
Why did your Screen Time disappear?
Almost always one of five causes, and only two of them actually delete anything. Screen Time data doesn't vanish randomly: either the rolling window did what it always does, a setting wiped the record, or the numbers are still there and merely look wrong. Here are the five, sorted from most likely to least, with the honest answer on what comes back. (Spoiler: nothing comes back. But three of the five never left.)
1. The window did its job#
iPhone Screen Time keeps about four weeks of detail, then deletes it permanently. Not archived, deleted. If the days you're missing are more than a month old, nothing failed: the phone worked as designed, and no repair, restore, or support call will change it. This surprises almost everyone at some point; we've written up how far back Screen Time goes and why Apple built it this way.
2. The toggle wiped it#
Settings → Screen Time → Turn Off App & Website Activity. That switch doesn't pause the record, it erases it, on the spot. Flip it back on a minute later and you start from zero. People hit this while troubleshooting a battery problem, cleaning up settings, or handing the phone to a child, and the deletion happens without much ceremony. If your history ended on the exact day you remember changing something in Settings, this is your cause.
3. A new iPhone kept your settings, not your past#
Screen Time's rules travel with your Apple Account: limits, downtime, restrictions all reappear on a new device. The usage history behaves like a resident of the old phone. Whatever fragments survive a migration, nothing on the new device will show you the months you spent on the old one. If your history starts on your setup day, that's why.
4. Your devices merged, and the math changed#
Share Across Devices folds your iPad and Mac into the same charts. Turn it on and yesterday suddenly looks heavier; turn it off, or sign a device out of iCloud, and hours you remember seeing are gone from the total. Nothing was deleted here. The chart changed its jurisdiction. Check Settings → Screen Time → Share Across Devices before concluding anything else.
5. Today hasn't settled yet#
The current day is the least trustworthy number on the screen. Apple assembles it as the day runs, and the display you check at noon can disagree with the one at midnight. Odd-looking gaps in today usually close by themselves. Judge the record by finished days, not the one you're standing in.
What you can actually do#
For causes one and two, the honest answer is: nothing, backwards. There is no recovery path, no backup that quietly holds it, no support ticket. Deleted Screen Time data is gone.
Forwards, you have two options. Keep a manual ledger (a screenshot every Sunday works, until the Sunday you're busy). Or let an app keep it: that's what finit does. You set up two Shortcuts once, and every night it files yesterday into a permanent record on your iPhone, every app, every day, kept for years. A record can only begin where the window still reaches, about four weeks back. So whichever way you choose, the best day to start is the day you noticed the past goes missing. That's today.
The short answers#
Why is my Screen Time not showing any data?
Usually one of five causes: the days are older than the four-week window, App & Website Activity was switched off (which erases the record), you moved to a new iPhone, Share Across Devices changed what is counted, or the current day simply hasn't settled yet.
Does turning Screen Time off delete the history?
Yes. Turning off App & Website Activity erases the stored history immediately, and turning it back on starts from zero. It is a wipe, not a pause.
Does restarting or updating your iPhone reset Screen Time?
No. A restart or an iOS update does not erase the history by itself. If data went missing around an update, check the four-week window and the App & Website Activity toggle first.
Can you recover Screen Time history?
No. Once the iPhone has deleted it, whether through the rolling window, the toggle, or a reset, there is no way back: no backup restores it, no setting reveals it, and Apple support cannot retrieve it either. What you can do is stop the next loss. An app that imports each day into its own record, the way finit does, keeps everything from the day it starts; it just cannot reach backwards.
Four weeks of memory is the deeper problem behind every version of this story: even when nothing goes wrong, the past is on a conveyor belt. If you want to know exactly where the edge is, read how far back Screen Time goes. And if you want the data out of the phone before it expires, there's an honest guide to exporting Screen Time data.
