YOU SAID:
Im watching on my cell phone
INTO JAPANESE
私の携帯電話で見ているIm
BACK INTO ENGLISH
Im looking at my cell phone
INTO JAPANESE
私の携帯電話を見ている
BACK INTO ENGLISH
I am watching my cell phone
INTO JAPANESE
私は自分の携帯電話を見ている
BACK INTO ENGLISH
I am watching my cell phone
That didn't even make that much sense in English.