Just got the new iPhone 7 like 3 weeks ago, absolutely loving the new phone. Kept everything stock as no need to update anything since I find that there are no problems. Today, I decided to try install Facebook app onto my phone. It can't install. It says it needs to update to latest IOS in order for Facebook to install. Is there anyway to install Facebook without updating the OS? And another thing is that I don't really want to update IOS since I find nothing wrong and I read bad reviews on people updating their IOS that they find many problems like battery drain issue and etc.... Which version IOS is safe and stable to update to with no problems? Please if anyone has knowledge/experience with IOS updates please let me know the infos. Thanks all.