When trying to download apps, I go to my file manager, and there it shows that I have 700MB remaining, but if I try to download an app of only 63MB, it says insufficient storage available, so what I did was get myself an SD card with a storage of 16GB, when I downloaded some apps, it all went smoothly and I still had a lot of space left on my phone, but after I downloaded another app, it once again said insufficient storage available but when I checked on my file manager, it showed that I had 12.98 GB left. Please help. Also, according to this website, there are more updated versions of vivo correct? However, if I go to system update in Settings, it says that it is the most latest version. Before go to buy moblie so you think again