Do you own an iPhone 4S? And do you wanna know how it’ll perform with iOS 9.1 Beta installed? Here’s your chance to find out. This review is on iPhone 4S’s performance with the first beta version of iOS 9.1, which will be released later in November this year. As iPhone 4S was released in the year 2011, it is the slowest iPhone available today that can run iOS 9.1 Beta. The interesting fact here is that Apple has continued to provide software updates for this device up to today. When the test was conducted, the startup took quite a long time as expected. Some lag was seen in opening the app store and while navigating inside the app store. Even the app search option that appears when you swipe down from the app menu also lagged in function. But surprisingly the multitasking screen operated smoothly without any disturbances. Overall performance of the smartphone with iOS 9.1 Beta is in a usable state although some lagging is present. So if you think your iPhone 4S can handle iOS 9.1 Beta, install it right away and enjoy the new wallpapers and also the cool new emojis. I hope you like my video - I'm thinking about doing more reviews on older versions of IOS.