iOS 26.6 and iPadOS 26.6 added an alert that reads Blocked Contacts Limit Reached, and it appears the moment you try to block one more caller or junk email sender. The block you just attempted did not take.
The full text reads: "You've reached the maximum number of blocked contacts. To block additional callers, remove a blocked contact in Settings."
Apple was already enforcing that cap before 26.6. What the update added is the warning. Freeing up entries gets blocking working again, and a Mac can clear them in bulk where the phone cannot.
How to free up space in Blocked Contacts on iPhone
Everything starts working again once the list is back under the ceiling.
On an iPhone or iPad the list lives at Settings > Privacy & Security > Blocked Contacts, which is where Apple's own blocking instructions send you for iOS 26.
To remove entries, tap Edit, tap the delete button next to a contact, then tap Unblock.
Reports from the shipped release also describe swiping left on an entry as a quicker one-step alternative. Apple's instructions do not mention it, so treat it as a shortcut to try rather than a documented step.
The same list is also at Settings > Apps > Phone > Blocked Contacts. It is one list either way, so use whichever door you find first.
Apple's steps let you tap Unknown contacts before tapping Edit, which separates entries with no contact card from the people in your address book.
Apple does not spell out how it sorts them, so look at what is in there before you start clearing.
One thing to rule out first.
If your actual complaint is that calls never ring, check Settings > Focus before touching this list, because an iPhone that stopped ringing after iOS 26 is usually a Focus setting rather than a block.
How to unblock contacts in bulk on a Mac
iOS has no select-all, so a list in the thousands is slow going on the phone.
A Mac signed in to the same Apple Account opens the same list, because Apple states that "if you block someone on one device, they're blocked on all Apple devices signed in to the same Apple Account."
Go to Apple menu > System Settings > Privacy & Security > Blocked Contacts. You will first see a single line showing how many entries you have. Click that line and the full list opens.
From there it behaves like the Finder.
Click one entry and press Command-A to select every entry, or click one and Shift-click another to take a contiguous run, or Command-click to add and remove individual entries.
Click the minus button at the bottom left to remove everything selected.
That procedure is documented in an Apple Community user tip updated in January 2026, and it is specific to macOS Tahoe 26.
On earlier versions the blocked list sat inside Mail and behaved differently, so older instructions will not match what is on your screen.
Give the iPhone a minute to catch up once you are done.
How to know when you have cleared enough
Apple publishes no cap, so there is no target number to aim at. Test for it instead.
Clear a batch, then go back and attempt the block that failed. If it takes, you are under the line. If the alert returns, clear another batch and try again.
That loop is the whole answer for anyone without a Mac, and it means you never have to empty the list. You only have to get under whatever the ceiling is on your device.
Why the alert appeared the day you updated
Apple was enforcing a cap well before iOS 26.6. Owners were hitting it and reporting it weeks before the update shipped, and coverage of the beta described the limit as pre-existing with the alert as the new part.
What nobody can confirm is whether the number itself moved, because Apple has never published one and did not comment when the alert appeared.
So the message is new information about an old condition rather than damage the update did. What it refuses is the new addition.
The entries already on the list are still there, which is why Apple's own wording tells you to remove one to make room.
If blocked people are genuinely still reaching you, that is a separate iOS 26 fault with its own causes, covered in blocked numbers still calling or texting.
What is the blocked contacts limit on iOS 26.6?
Apple has never published a number. Every figure comes from an owner report, so each one carries its date.
- One owner reported hitting the wall at around 7,900 entries on 28 July 2026.
- Another found a 3,000 maximum on 21 July 2026, six days before 26.6 shipped.
- 20,000 is the figure repeated most often, and it traces to owner reports rather than to Apple.
What those support is a range rather than a value, roughly 3,000 at the low end and 7,900 at the high end, none of them Apple's.
Clear a healthy margin and test with the loop rather than trimming toward any figure that looks official.
Why your blocked list got so long
Almost nobody blocks several thousand phone numbers on purpose. The volume nearly always comes from email.
Every time you open a junk message and tap Block this Contact, that sender joins the same list your blocked callers are on. As a daily habit against spam, it reaches four figures faster than it sounds.
Old junk-sender entries are the cheapest to clear. A spam address blocked a year or more ago has probably been abandoned, since senders rotate addresses constantly.
Unblocking does mean that sender can reach you again, so clear from the unknown entries and leave the named contacts you chose deliberately.
How to stop the blocked list filling up again
Clearing space buys time rather than changing the pattern, because the same habit refills it.
For calls, set Settings > Apps > Phone > Screen Unknown Callers to Ask Reason for Calling, which makes unknown numbers state their business before the phone rings, or to Silence, which sends them to voicemail.
Either one covers every unknown number without spending a list entry.
For email, blocking costs one entry per sender, and spam produces new senders faster than that. Junk filtering works on the message rather than the address, so it consumes no slot.
On a Mac that sits under Mail > Settings > Junk Mail. iOS Mail has no equivalent training control, so that side has to be set up on a Mac or with your mail provider.
What does not help
- Installing a further update. iOS 26.6 introduced the alert, and as of 29 July 2026 there is no later build to move to. No release note promises a larger cap.
- Restarting, or resetting network settings. The list is data, not a stuck service. Resetting network settings touches Wi-Fi, VPN and cellular configuration and leaves the blocked list where it was.
- Reset All Settings is not a shortcut. It is a different item in the same menu, and one owner reported it wiped over 17,000 blocked numbers along with every other setting on the phone. It does empty the list, and it takes everything else with it, with no undo.
- Signing out of iCloud. Nothing published says this clears the limit, and it is not a bulk delete. Blocks follow your Apple Account across devices, so signing out is as likely to leave a half-synced list as a trimmed one.
- Deleting the junk message. Removing the email does not remove the sender from the list. Apple's setting sends blocked mail to Trash, and emptying Trash does not touch the entry.
- Blocking from a different app. Phone, Messages, FaceTime and Mail all write to one shared list, so switching apps almost certainly meets the same ceiling. The alert is worded for callers, and the owner who reported it at 7,900 was blocking email senders.
Status: the cap predates iOS 26.6, which added the warning. Apple publishes no maximum, and dated owner reports run from about 3,000 to 7,900 entries.
Can you bulk unblock on an iPhone?
No. Apple's documented steps are Edit, then the delete button, then Unblock, one entry at a time, and iOS 26.6 offers no select-all in that screen.
The list holds its position after each Unblock, so you can work steadily down it without scrolling back. For a list in the thousands, the Mac window is the practical route.
Does the limit count numbers and email addresses together?
Yes. They appear in one combined list at Settings > Privacy & Security > Blocked Contacts, and blocking from Phone, Messages, FaceTime or Mail writes to that same list.
Apple documents no separate allowance for each type. Since blocked email senders are usually the bulk of a long list, they are also where the free space is.
Will Apple raise the limit?
Nothing published says so. The iOS 26.6 release note we could read covers bug fixes, security updates and Spotlight indexing work, and says nothing about blocking.
Apple did not comment on the cap when the alert appeared, and has never published a figure. Treat the alert as documenting a boundary rather than signaling a change to it.
The Short Version
- The alert is new in iOS 26.6 and iPadOS 26.6. The cap it reports is older, and your existing entries are still on the list.
- Free up room at Settings > Privacy & Security > Blocked Contacts, then Edit, the delete button, and Unblock.
- iOS has no select-all. A Mac clears them in bulk at System Settings > Privacy & Security > Blocked Contacts using Command-A and the minus button.
- Apple publishes no cap. Dated owner reports run from about 3,000 to 7,900 entries.
- There is no target number, so clear a batch and retry the block that failed until it takes.
- Reset All Settings does empty the list, and it wipes every other setting on the phone with it.
Where to Next
- Blocks that do not stick at all: blocked numbers still calling or texting on iOS 26
- Calls that never ring through: iPhone not ringing after iOS 26
- Mail arriving with no alert: iPhone Mail notifications not working after iOS 26
Isaac Smith is the founder and editor of PC Glance, a website that covers computers, laptops, and technology. He is a tech enthusiast and a computer geek who loves to share his insights and help his readers make smart choices when buying tech gadgets or laptops. He is always curious and updated about the latest tech trends.