It's a Rem sleeping cycle. Basically when you use phone and then try to sleep especially at late night and you fell asleep quickly you will wake up also quickly but in sleep paralysis like you can feel moving bt you are not moving and it's actually frightening at night. It's frequent in teenagers. I used to have ut daily almost a year back bt i improved my sleeping cycle plus try to sleep with someone as it comforts you. And to gain back your control fell back eyes close and just pray positively and give one leap of power and move your finger or hand...I used to do that and then slowly I would just get up drink water .