I have been using Latitude because Google. But now I see that Latitude is being discontinued. In addition to recommending an app, can you also explain how to set the phone to track without using unnecessary battery life? I figure I should turn off Llama. My phone has a stock widget with wi-fi, bluetooth, GPS, brightness... and one other icon that I'm not sure about. It has two arrows going in a circle. I figure it's either 'pinging for notifications' or completely turning off/on 4G. I assume Airplane Mode is not what I want, because that would disable GPS. Any guidance would be appreciated.