Good morning! This is the tech news you need to know this Tuesday.Chipmaker Qualcomm claims that a recent court victory means most iPhone models are banned from sale in China. A Chinese court found Apple had violated two Qualcomm patents, but Apple said most of its devices remain on sale in the country.Google CEO Sundar Pichai will testify before Congress on Tuesday. As Google has come under the spotlight for its reported plans to re-enter China with a censored search engine, and as employees push back against the company's work with the military, Pichai's testimony highlights the search advertising giant's American roots.A New York Times investigation has explored how apps extensively track people's location data, updating more than 14,000 times a day in some cases. The companies will sell this data to advertisers, retail firms, and even hedge funds.Amazon is planning to open one of its first international cashierless Amazon Go stores in London's Oxford Circus. Amazon is reportedly looking for a space between 3,000 and 5,000 square feet in size.Mark Zuckerberg recently reach out toMicrosoftpresident and chief legal officer, Brad Smith, for advice on how to handle his company's many ongoing crises. That doesn't necessarily bode well for Facebook COO Sheryl Sandberg, who has conventionally played an advisory role to Zuckerberg.YouTube has panned Gavin McInnes, the founder of far-right movement Proud Boys, from its platform. It isn't because of his political views thoughaccording to a message on his page, McInnes repeatedly violated copyright.Augmented reality startup Blippar was once thought to be worth $1 billion, but is on the brink of collapse. The company's chairman warned the firm had no choice but to begin insolvency proceedings thanks to emergency fundraising being blocked.British tech startups are increasingly gloomy as Brexit approaches, and it's already hurting their ability to hire talent. Founders reported a feeling of greater pessimism, and being able to attract less international talent over the last year.Salesforce is hiring its first Chief Ethical and Humane Use officer to make sure its artificial intelligence isn't used for evil. Salesforce announced it would hire Paula Goldman to lead its new Office of Ethical and Humane Use, and she will officially start on Jan. 7.Google has sped up the shutdown of its failed social network Google+, after discovering an API bug that potentially impacts 52.5 million users. Google+ will now close in April 2019 rather than August 2019.Have an Amazon Alexa device' Now you can hear 10 Things in Tech each morning. Just search for "Business Insider" in your Alexa's flash briefing settings.Join the conversation about this storyNOW WATCH: Watch BMW's self-driving motorcycle accelerate, turn, and brake to a stop Click here to read full news..