Space issue

[AC Question]

Total free space of my phone (Allview P4 life) is 4,82GB. I have a version of Android 4.4.2. I have a limit of 1GB of space and i can't instal anything because i have "no space", but i have 4,82GB free and i can't use it. I can not have any updates or apps because of that limit. I hope you can help me to fix this problem. I wish i can use the rest of 4 GB. thank you!