In the first 4 years of Android Market, Google launched multiple stores to download content.
It's hard to imagine many people are still using Android phones this old. Downloading install packages from unknown sources is not advisable, not to mention Google now provides security patches for Android versions 4.4 (KitKat) and above. There was Android Market for apps and games, Google eBookstore for books and Google Music for music. Magic browser, uploaded to Google Play on May 17, masqueraded as an "ultra-fast, simple and practical mobile browser", while Noise Detector promised to let you "easily measure the noise level of the current environment". This means that even if a user has an old device running one of the said versions of Google's OS, Google's settlement to end support for Android Market shouldn't make any difference in real-life. Google Play, the replacement for Android Market, is available on Android 2.2 and above. Android 2.3 Gingerbread is nearing a similar fate with a 0.8 percent figure.
Do you have an Android device running Android 2.1 or below with Android Market? The store's discontinuation will happen without any notification on the device due to "technical restrictions", according to the company. Then again, side loading should continue to work. Meaning, devices running on Android 2.1 (Éclair) and lower still used Android Market.