Other How does an Icloud Sync work when same ID is used for 2 mobiles

[MyPhone99]

Googled it but didn't get the answer for the scenarios i am looking for. I dont have a second device with me right now so i cannot try and get the answers.

For example, lets say i have 10 photos on my icloud (Named 1,2,3...10)

Scenario 1: Now i used same icloud account to login to two new phones that have 0 photo, Now turned 'Icloud on' on both phones . so now i will be having 10 photos on icloud, phone_one and phone_two
Now question is > if i delete one photo(say photo no 9) from phone_one and delete one photo (say photo 10 ) from phone_two
what will happen to cloud? which phone it will consider as primary source of back up?

Scenario 2:
I use same icloud account to login to two new phones which have few photos already on phone (say photo 11 to 15 on phone_one & photos 15 to 20 on phone_two) . Now turned 'Icloud on' on both phones . So what will my icloud, phone_one and phone_two will end up having ?

Please help me with answers for both scenarios

 

[ericwn]

Once you turn on iCloud photos it creates the master library in the cloud and your iPhone syncs the originals to that cloud location. You can then chose to optimise storage and only keep little preview images locally or download and keep all original images to the phone.

If you delete an image locally it will be deleted in the cloud library too, they are now in sync.

When you take different images with different iPhones these will again be uploaded to the cloud and from there downloaded to the other devices when they sync.

 

[MyPhone99]

Thanks Ericwn,
Anyone else can my questions posted above Please
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Once you turn on iCloud photos it creates the master library in the cloud and your iPhone syncs the originals to that cloud location. You can then chose to optimise storage and only keep little preview images locally or download and keep all original images to the phone.

If you delete an image locally it will be deleted in the cloud library too, they are now in sync.

When you take different images with different iPhones these will again be uploaded to the cloud and from there downloaded to the other devices when they sync.

Does it mean if we have to delete a photo from icloud i should do it from icloud only and not iphone?

 

[adrianlondon]

1. You'll delete photos 9 & 10 from iCloud and both phones.
2. iCloud will have photos 11-20, with 15 duplicated. As will both phones.

 

[imp3rator]

Scenario 1 : You have deleted 9 and 10 from phone one, two and icloud
icloud is not backup but sync server

Scenario 2 : You would have photos from 11 to 20 on phone one, two and icloud

 

[now i see it]

Think of iCloud storage (when you're using it) as the only storage you have and all the devices that access it are all accessing one drive - the iCloud Drive.

Just like any network server, the files reside on the server and other devices can access it.

So if one device deletes a file on iCloud, none of the others can see it either . It's gone.

The reason using iCloud is so confusing is because apple is trying to make it invisible. The display of files that look like they're locally stored files and the cryptic warnings given when deleting stuff doesn't help any either

 

[ericwn]

Thanks Ericwn,
Anyone else can my questions posted above Please
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Does it mean if we have to delete a photo from icloud i should do it from icloud only and not iphone?

I had answered your questions in the last two sentences.
With iCloud Photo Library, you can delete the image on any device and it will be removed everywhere.