Are Snapchat and Instagram more popular than Facebook? Users lash out at Alexa and Siri, Amazon Prime Day customers watch out, and more  

Summary: More teens favor Instagram and Snapchat - does it mean goodbye to Facebook? How voice assistants like Siri and Alexa respond when users yell at them. Facial recognition could soon be taking over, Verizon's new unlimited data plan, Major phishing scam targets Amazon Prime Day customers, and what's new with the Android Oreo?