Police stop MA driver after watching him leave parking lot of Chinese restaurant in early morning hours. Officer believes driver is texting while driving due to apparent glow of phone on driver’s face and position of his head looking down. Driver admits to one drink and states he was glancing down at GPS function of phone. Officer notes odor of alcohol and red/glassy eyes. Arrest follows standard field sobriety tests. Defense prepared to argue Motion to Suppress challenging legality of stop based on mere hunch of texting while driving violation. DWI charge dismissed prior to trial.