You can install the software, because you don't have enough memory, so you should check how much memory your mobile phone has before downloading the software. Also, you should look at the capacity of the downloaded software, so that you won't make such a mistake. If it is very important, the software will. It's a little troublesome, so be careful, such as some more important software. Can you delete the contents of your mobile phone a little bit, and then download the software and reinstall it? T 4, it's quite simple, but it's a little more troublesome