Lightroom for mobile: I want to decide if and when I sync photos taken in the app. Please give me a switch to turn off sync.

Click the Lightroom Icon in the top left corner and turn off auto add. Then only photos you choose to import will be added to Lightroom mobile and synced.

That doesnt work for me.

What doesn't work exactly? You mean it continued to automatically add the photos even with that turned off?

every photo I take on my iphone tries to sync

Any photos in the Lightroom app will sync, but the switch in the Preferences should stop them being automatically added. How long ago did you disable that switch, and are new photos still being added to the Lightroom app?

Already been through everything with adobe.  They told me to suggest the change in the app.

That's great Blake, but I'm trying to understand exactly what change is required (since the engineers will need to know that information). So the question is, are photos still being automatically added to Lightroom mobile even though the switch is set not to do so (bug - higher priority) or is this simply a request for selective sync (feature request).

I have auto add off on mobile and I selected the pause option on the desktop. Everytime I open the app it tries to sync every photo Ive taken with the mobile app.

Are these photos already in Lightroom mobile? (In which case, removing the ones you don't want to sync would do the trick) or are they still being add to Lightroom mobile as you shoot them?

yes Im taking them with the Lr app and they try to sync automatically.

I am converting this to an Idea (Feature Request) instead of a problem. 

If you use the LR app's capture capabilities, it will sync automatically. If you use the native camera app, it will work as Victoria describes.  Others who wish this feature can then add their votes. 

I most definitely also need this.  It's so silly that EVERY photo gets synced.  Some are photos I want to work on in Lightroom CC on my desktop, but some are just snapshots.  And like the OP, the sync--the very slow sync--completely destroys my internet to where I can barely even bring up a web page.  And this is on high-speed cable.

If you cannot do selective photo syncing, at least you could give us a On/Off or Pause, so that the syncing does not start as soon as I get into Wifi, with not control on my end.

We really need this, why can't it be done? It's been a long wait for something that seems way less complex than all the other updates.

A global sync pause button would be the most obvious direction. I imagine that selective syncing would be more complex to implement and manage (when the user has an issue).

Yes, a global sync pause is all I need, or have ever asked Adobe for on this subject.