ZTE Kis v788 low memory problem- can't install new programs

Hi friends, I am facing problem in this phone, in my ZTE kis v7888 phone, it is saying that I can't install new program because of low memory problem and I can not install problem in micro sD card either. I am in big problem because now I can not install application of my need and I don't know what to do with this phone.
very useless phone. I am highly disappointed.

It is because you need to uninstall unused application , this phone only has 256 MB RAM, you can only make basic use of it, it is more a simple phone. However, you can move already installed programs to SD card using apps manager and then can install new apps or programs.