The Android app has received two major exclusive updates. The first, introduced in March 2014, cut the size of the app by half and added significant improvements to performance and responsiveness on a wide variety of Android devices. The Verge wrote that the development team had tested the app on devices not for sale in the United States, particularly low-end models like Samsung Galaxy Y, in an effort to improve the app for its userbase located outside the U. S. Engineering manager Philip McAllister told The Verge that "More than 60 percent of our users are outside the US, and Android covers roughly half of total Instagram users".  The second update, introduced in April 2017, added an offline mode, in which content previously loaded in the news feed is available without an Internet connection, and users can comment, like, save media, and unfollow users, all of which will take effect once the user goes back online. At the time of the announcement, it was reported that 80% of Instagram's 600 million users are located outside the U. S. , and while the aforementioned functionality was live at announcement, Instagram also announced its intention to make more features available offline "in the following months", and that they were "exploring an iOS version".