iMessage not syncing across devices

Make sure you're signed in iCloud with the same AppleID on both devices.

iPhone: Settings → iCloud

Mac: System Preferences → iCloud

Make sure in iPhone:

Settings → Messages → iMessage = ON

Settings → Tet Message Forwarding → Has your Mac enabled

Settings → Messages → Send as SMS = ON

Settings → Messages → MMS Messages = ON

On the Mac check:

Messages → Preferences... → AppleID is the same as in the iPhone in Settings → Messages

What version iOS are you running on your iPhone?

Verify these settings:

Settings → Messages → iMessage = ON

Settings → Messages → Send as SMS = ON

Settings → Messages → MMS Messaging = ON

Text Message Forwarding should be 3ʳᵈ option on that screen, there you can enable SMS text message forwarding to other devices (Mac, iPad etc..) you'll have to tap a code on the iPhone that will appear on the other device(s) once you turn text forwarding on on these devices.

The "Text Messaging Forwarding" Option does not show on the iPhone Saifan. Why is that please?

Nothing seems to sort this inconsistent service. Some texts are synced to all devices, while many are not.

This has occurred in the last few years, so I suspect it has something to do with iOS software updates.

Hi Saifan,

I am running V 9.3.5 (13G36) on an iPhone 4S or 4G.

I found those settings under the Messages section. I had been looking somewhere else, I suspect.

The settings are now all the same across the devices. They mostly were anyway.

However, There are very different collections of messages on different devices, l despite being all on the same account.

Everything had been fine until about 2 months ago. Hope this info helps us both, and anybody else tuned in.

iOS does not support message syncing across devices.

Text forwarding enables forwarding SMS messages received from other cell phones, that are not iPhones, to your other devices. For example, if a friend of yours sends you a text message from an Android device, this would be an SMS text message (not iMessage). So text forwarding would forward this SMS to your Mac and/or iPad.

Apple did announce that iOS 11, to be released this fall, will permit iMessage syncing across all your devices via iCloud, but it will require all your devices be upgraded to iOS 11.

Unfortunately, iPhone 4S will not be able to be upgraded to iOS 11, as it's an obsolete device.

Hi Saifan,

I only have one Apple ID, and have tried everything suggested here, the messages do NOT synchronize. I am in the process of setting up a brand new iMac, used Migration Assistant from my 2009 iMac. For all the years I used it, my 2009 iMac always synchronized with the Message app. That was very helpful - especially when I needed to print or forward or cut and paste into emails. It is very frustrating to be unable to do that. I also do not see an option to back up iMessages to iCloud, where maybe they could sync. I use a 6+ iPhone, all of my operating systems are up to date. I have an iPhone4 which has been converted to iPod type usage (no cell service at all - just iTunes) and 2009 MacBook all associated with my AppleID.

Starting 8/24/17 I have the same issue. Sync just stopped.

I use the same Apple ID on both devices. I have check settings for numerous times.

I use iMac under 10.12.6 and iPhone7 under 10.3.3.

Please advise.

Thank you.

You may want to go into your i Phone - messages - and verify that you are using the same user ID on the mac as you are on the phone. if you are, you will get the picture that was provided by previous post below. I had this same issue and once I was able to add using my apple ID, my problems went away.

More than likely you will need to verify you are using you apple user ID to forward to your mac. if you are not, the text message forwarding option does not populate until you click on that field. give it a try and post back the outcome.

I've tried all this multiple times and still have the same sync problem. It

Wonderful!

You're welcome.

THANK YOU!!

I do NOT have "text message forwarding" on my iPhone, and I'm running the current OS. Everything was fine until I had to reset my settings at the Apple Store yesterday. What a PIA!!!!!!!

I don't have text msg forwarding at all and I'm looking in the right place. I have a 7+ i should have this