In the crown-ether complex, the metal ion fits into the cavity of the crown ether and is solvated by the oxygen atoms. The exterior of the complex is nonpolar, masked by the alkyl groups of the crown ether.
Arrow Alerts. Location-enabled apps and services track your iPhone by periodically querying it for location-based information. They may do this while being used or running in the background on your device. A little arrow appears on the iPhone's upper-right corner to advise you when data is shared. Arrows also appear within the Location Services settings screens to indicate when and what kinds of information was shared with whom.
Q: apple id format for using find my iphone. How do i use my existing apple id for setting up the Find My Iphone? the set up screen says to input the apple id as xxx@example.com, ie in an email address format, whereas my apple id is not in the xxx@yyy.zzz format. it is only xxx.