The apps you install, photos you take and Xbox Music tracks you download all take up a bit of space. If your phone storage gets filled up, you'll need to make room to add new stuff and do other important things, like install phone software updates.
Kung mapupuno ang storage ng iyong telepono, kakailanganin mong magbakante ng espasyo para magdagdag ng bagong impormasyon at gumawa ng iba pang mahahalagang bagay, gaya ng pag-install ng mga update sa software ng telepono.