Watch series 3 + iPhone 6 iOS 12.4.3 = not working

I have an iPhone 6 with iOS 12.4.3, and just won an apple watch series 3. It is impossible to pair both devices.

First I was asked to update the iOS to the latest version, but my iPhone informs that I am up to date. No new version available.

Somehow I was able to perform a factory reset to the Apple Watch (although never previously used). Things went slightly different. It didn’t show the message to update the iOS, and I thought I would be able to finish. Unfortunately, a few seconds later, a message appears informing that the devices are being unpaired. If I go very fast, I only reach the wearing hand definition, and then unpair.

Any thoughts on how to get this solved?

Apple Watch

Posted on Nov 27, 2019 7:07 PM

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Posted on Feb 22, 2020 4:51 PM

I had the same problem I had to call Apple support and tell them what was going on they told me to send mine into get repaired and all they did was just downgrade my operating system on my watch and now They paired and they both work fine so all you have to do is sit in your watch and have them downgrade the iOS on the watch so I can be compatible with your iPhone 6 unfortunately on the website it says the iPhone 6 is compatible with their series 3 watch which is true but unfortunately Apple Watch is already been updated to the new route newest version of the iOS Apple Neil watch then I yeah it won’t be compatible but they they did downgrade it for me and now they work fine

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38 replies

Nov 28, 2019 2:02 PM in response to Community User

Unfortunately, Apple have and do advertise the Series 3 watch to work on an iPhone 6 when new. The staff in the shop informed us that the Series 5 wasn't compatible but the Series 3 definitely was.


As for the phone being 5 years old, it works perfectly and why should we be forced to upgrade a phone unnecessarily just to please Apple? Environmentally responsible? Hardly... Why is it that an iPhone 6 was fine before September but not today?


As for iOS 13. Big deal, we can't upgrade to iOS13, iOS12 on the iPhone 6 works just fine.





Dec 26, 2019 3:50 AM in response to Nctopteach

As I’m the one of those who started this thread, I feel obliged to comment again. It seems my original comments were more than justified. For anyone who thinks we should be forced to upgrade our products, regardless of their working condition should think again. Not everyone is made of money or feels the need to upgrade their products at every opportunity. APPLE PLEASE TAKE NOTE!!!

Nov 28, 2019 8:19 AM in response to Chris_d52

Apple never advertised or stated the compatibility between the iPhone 6 and the Series 3 and 5 if bought new.


You have an iPhone 6, which is over 5 years old, and that phone doesn't have enough RAM to support iOS 13.


Now, the latest version of watchOS is watchOS 6, which requires iOS 13, and iOS 13 only works on the iPhone 6s / SE and higher.


That applies to the latest Series 5, but also to older Apple Watches once updated to watchOS 6.


If you buy a new Apple Watch Series 3 from Apple after September 2019, you can count on it that it already runs watchOS 6.


See: https://www.apple.com/watch/


Scroll down to the bottom of the page, it's noted right there: "Apple Watch Series 5 and Apple Watch Series 3 require an iPhone 6s or later with iOS 13 or later."


Maybe you need to inform yourself first - or better yet - upgrade your 5 year old iPhone before you buy a new accessory for it.

Jan 17, 2020 2:30 PM in response to KyleFill

So you judge me by my username which was set years ago and trust me, it has nothing to do with my personality, thank you. I'm not a selfish person at all, otherwise i wouldn't even spend my time on this forum as i like to help people just because i know a lot about Apple Products since i happen to know them quite well now. It's all voluntary too. I recieve no money from this.


But anyways - you do can inform yourself aswell, it clearly says on the Apple Website under the Watch section at the bottom of the page (https://www.apple.com/watch) Apple Watch Series 5 and Apple Watch Series 3 require an iPhone 6s or later with iOS 13 or later. It has been updated since 2018, it seems. An iPhone 6 is over 5 years old now and it just doesn't have enough RAM for iOS 13 - i didn't choose that, Apple did. This is an users forum. I also didn't decide that the latest watchOS 6 requires iOS 13 and it doesn't work with iOS 12. I just don't understand why the people at the Apple Store didn't knew this. I understand your frustration, but i'm the wrong person honestly.


And again, you do not need a 1000$ device. The iPhone 8 sells for 449$ and you can find cheaper, refurbished and/or older models of iPhones (like the 6s or 7) online even cheaper.

Nov 29, 2019 8:16 AM in response to Chris_d52

You shouldn't buy a new iPhone to please Apple (this is an users forum), as a matter of fact it is perfectly reasonable to upgrade your iPhone every 5 years... i mean your iPhone doesn't support iOS 13 anymore... and there are cheaper models too, not every iPhone is 1000$.


The Series 3 Apple Watch is compatible with the iPhone 6 - unless it runs watchOS 6. watchOS 6 requires an iPhone 6s / SE or newer, not the Watch itself.


iPhone 6 + Series 3 on watchOS 5 = Compatible

iPhone 6 + Series 3 on watchOS 6 = Not compatible


The iPhone 6 is no longer fine because it cannot support the latest version of iOS, which is 13. It's stuck on iOS 12.4.3 and may only see future iOS 12 Security Updates. You need to expect that other Apple products like the Apple Watch or EarPods will not work anymore with the iPhone 6.


But since you got your refund, it shouldn't be a problem for you.

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Watch series 3 + iPhone 6 iOS 12.4.3 = not working

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