Synchronize with Google+ Photos Im trying to sync my photos on google plus using my iphone, because i had more free space on it.

How do it sync in timely manner  - auto sync.
You will need to install the Google+ app onto your phone.

According to Google's directions:

Open the  Google+ app > touch the Menu icon > Gear icon > Camera and Photos > Auto Backup > Toggle On or Off

Allow Google+ to access your photos: Phone settings > Privacy > Photos > Google+ > toggle the setting ON or OFF