Series 3 altimeter and heart sensor

[Newtons Apple]

I was disappointed the sensors were not upgraded, the heart rate sensors are not the best, it’s good but I still get mistakes.

Agreed! I would have gone for the AW3 if they did anything to improve the HR sensor which is somewhat spotty for me.

 

[profets]

I have bought AW2 yesterday (discounted) so sorry for my ignorance but does it have wifi at all? I don't see any option for joining wifi on AW2...

Yes, every apple watch has wifi. There's no setting for it on the watch itself, but it'll automatically connect to any wifi network that your iPhone has previously connected to.
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According to this (step 14)....

https://www.ifixit.com/Teardown/Apple+Watch+Series+2+Teardown/67385

the series 2 does in fact have a barometric sensor built in, it's just not activated. So perhaps os4 will activate it

I remember seeing that. Actually I think @Julien mentioned that in past threads.

Now I'm tempted to go for a run with my Series 2 on it's own to see if it reports any elevation data. My guess though is that it won't (given that they never mentioned it as an official spec).

 

[satchmo]

According to this (step 14)....

https://www.ifixit.com/Teardown/Apple+Watch+Series+2+Teardown/67385

the series 2 does in fact have a barometric sensor built in, it's just not activated. So perhaps os4 will activate it

I would think Apple would do the opposite...to differentiate it from the Series 3.

 

[ftaok]

According to this (step 14)....

https://www.ifixit.com/Teardown/Apple+Watch+Series+2+Teardown/67385

the series 2 does in fact have a barometric sensor built in, it's just not activated. So perhaps os4 will activate it

Interesting. It would be nice if it did, but it doesn't really matter to me. If I need elevation data, I just run with my iPhone.

 

[Benz63amg]

I have bought AW2 yesterday (discounted) so sorry for my ignorance but does it have wifi at all? I don't see any option for joining wifi on AW2...

It's automatically on wifi when your iPhone is connected to wifi
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According to this (step 14)....

https://www.ifixit.com/Teardown/Apple+Watch+Series+2+Teardown/67385

the series 2 does in fact have a barometric sensor built in, it's just not activated. So perhaps os4 will activate it

WatchOs 4 will not activate it, the barometer and the LTE capability are the main selling points of the series 3 and the Series 2 does indeed have the barometer component in the hardware but Apple greedily keeps it internally disabled, it was a real surprise last year when it was discovered hiding in the Series 2's hardware
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Interesting. It would be nice if it did, but it doesn't really matter to me. If I need elevation data, I just run with my iPhone.

It's used everywhere not just while doing runs and it's a very important tool to create a proper activity profile and the only way to get it would be with a series 3 watch as it has the barometer

 

[ftaok]

It's used everywhere not just while doing runs and it's a very important tool to create a proper activity profile and the only way to get it would be with a series 3 watch as it has the barometer

For my use case, a barometer is only useful for tracking elevation for my workouts. I can't think of my elevation being useful for anything else. I don't care about how many flights of stairs I've walked up. I'm not a hiker that needs elevation.

Hey, if you are, then the barometer is good for you. But it's not a deal sealer for me to buy the S3 (or replace my S2)