Chinese smartphone maker Xiaomi has lowered its likely valuation to between $55 billion and $70 billion following its decision to delay its mainland share offering until after its Hong Kong IPO, three sources with direct knowledge of the matter said.

Our phones can make us distracted, stressed and depressed. A growing number of apps aim to help us reclaim our lives.

We go abs-on with the Stealth Core Trainer, which combines a planking apparatus with a smartphone app to motivate you through the pain.

Derek Labat writes: Nowadays, gaming on the go is as easy as downloading an app onto a smartphone, but there was a time, not too long ago, when if you wanted to duplicate the video game experience away from home, you had to go to an arcade or settle for one of those Tiger LCD games (yeah, have fun with that). Things changed forever in 1989 when Nintendo released the Game Boy with Tetris as its pack-in game and, since then, they have dominated the market (or longer if you go back to 1980 to include their Game-'N-Watch games).  That's almost three decades. Of course, they've had their fair share of competition, the biggest coming from their bitter rival at the time, Sega, in the form of the Game Gear.

A new study likens smartphone addiction to substance abuse. Here are some ways to break the habit.

Researchers have created a technology that allows public cameras to send personalized messages to people without compromising their privacy. The team developed a real-time end-to-end system called PHADE to allow this process, known as private human addressing.

Apple is developing production plans for its next iPhones that stress cheaper liquid-crystal displays, in a sign of consumers’ sensitivity to the price of smartphones.

Mattel via eBay offers the Barbie Malibu Ave 2-Story Mall with Two Dolls for $37.99 with free shipping. That's tied with our mention from last week and the lowest price we could find by $62. It features a moving escalator, ATM, beauty shop, dress boutique, food court, and movie theater with a smartphone holder that lets you use your mobile device as the movie screen.

Mattel via eBay offers the Barbie Malibu Ave 2-Story Mall with Two Dolls for $37.99 with free shipping. That's tied with our mention from last week and the lowest price we could find by $62. It features a moving escalator, ATM, beauty shop, dress boutique, food court, and movie theater with a smartphone holder that lets you use your mobile device as the movie screen.