This error is so frustrating when you have a lots of space on device.I've experienced this so many times and came up with a solution.It is to clear cache of Apps you installed.You can do this one by one from Settings > Apps.But follow my method its fast and easy. #1. Go to http://ccleaner.en.uptodown.com/android and download CCleaner ccleaner-v1-09-36-multi-android.apk to your Android's SD card or external SD card using a web browser like chrome.If you can install little apps without this error use Playstore to install it. #2.Now open the .apk file and install it.If you used Play Store then skip this step. #3.Open the CCleaner App. #4.Click ANALYZE button at the bottom left of the screen.It will take some time depending on your device's speed. #5.Once the scan is finished check Cache and History from the list.(My cache is very small because I've done this a few times)Now click CLEAN. Now go to Play Store again and try to in