Chris Christie in S.C. town hall bashes Donald Trump, talks mental health and Supreme Court

WhatsApp has launched a major privacy update that will let people chat without revealing their phone numbers. Instead, they will be exchanging messages using their usernames, reports the BBC . The platform is allowing users to reserve their chosen username now, as the roll-out to the platform’s three billion account holders continues over the next few months. The goal is to keep phone numbers private when chatting with new people or in group conversations, according to the Strait Times . Usernames will be limited to 35 characters with few restrictions, except for some high-profile...