User level: Level 1 (4 points)Recently upgraded to iPhone 18 pro and since that time, my messages are delayed between my watch (5) and iPhone. New messages will pop up on my watch, but they do not load onto my iPhone 18 pro. Sometimes there are very long delays between the two syncing. I have restarted the iPhone each day to help with no luck. Also, there are times when I will get an alert to a new message that was received over 24 hours ago.
Are there any known issues with syncing?
Posted on Sep 29, 2026 11:24 AM
User level: Level 10 (454,138 points)Sep 30, 2026 6:16 AM in response to dmcilm
If messages on your iPhone are being delayed for several hours — sometimes approaching 24 hours or even less — there are a few important settings and connectivity issues you should check before assuming there is a problem with the iPhone itself.
1. Check your Internet connectivity
Simply being connected to Wi-Fi does not necessarily mean that you have an active Internet connection. Your iPhone may show the Wi-Fi symbol even when the router has lost its Internet connection.
Open Safari and try visiting a website. If websites are not loading, check your Wi-Fi router or switch temporarily to cellular data. If the problem occurs only on Wi-Fi, the issue may be with your Internet connection, router, DNS settings, or ISP.
2. Check Date & Time and Time Zone settings
Make sure your iPhone is automatically obtaining the correct date, time, and time zone.
Go to:
Settings → General → Date & Time → Set Automatically
Keep Set Automatically enabled. An incorrect time zone or manually configured date/time can sometimes interfere with the proper handling and timing of messages and other network services.
3. Determine whether it is iMessage or SMS
It is important to establish whether the delayed message is an iMessage or a traditional SMS/text message, because they use different systems.
If it is iMessage:
You can try refreshing iMessage activation:
Settings → Apps → Messages → iMessage → turn it OFF
Wait a few seconds and then turn iMessage ON again. The activation process normally takes only a short time, although in some circumstances it may take longer.
Also make sure that your phone number and Apple Account are correctly configured under the Send & Receive section.
If it is SMS:
SMS is handled through your mobile carrier rather than Apple's iMessage service. If SMS messages continue to be delayed, contact your mobile carrier/service provider and ask them to check your SMS service, account provisioning, network connectivity, and any carrier-side issues.
In short
Before blaming the iPhone, check these three things:
Internet connection → Automatic Date & Time/Time Zone → iMessage vs. SMS
Identifying whether the problem affects iMessage, SMS, or both is particularly important because it immediately helps narrow down where the problem is occurring — with your Internet connection, Apple's messaging service, or your mobile carrier.
Originally posted at discussions.apple.com/thread/256367404