A woman takes a picture of a pedestrian traffic light with a female figure during International Women's Day in Valencia, Spain, March 8, 2016. REUTERS/Heino Kalis TPX IMAGES OF THE DAY

Brianna Lempesis, from San Diego, appears on a video screen on her "Beam" robot, while waiting in line to purchase an iPhone6S at the Apple Retail in Palo Alto, California September 25, 2015. Lempesis made the purchase via the screen and the phone was attached to a hook on the robot. REUTERS/Robert Galbraith TPX IMAGES OF THE DAY

Lucy Kelly is seen on a screen attached to a 'telepresence robot', which she used to purchase her iPhone 6s during the official launch at the Apple store in central Sydney, Australia, September 25, 2015. The new iPhone 6s and 6s Plus arrive in stores and at consumers' doorsteps on Friday, kicking off a sales cycle that will be scrutinized for signs of how much juice Apple's marquee product has left. Apple has a tough act to follow after the success of the iPhone 6, but sales are expected to benefit this year from the inclusion of the Chinese market, where the gadget's debut was delayed in 2014 due to regulatory issues. REUTERS/David Gray 

Female delegates take "selfies" with Alibaba Group Executive Chairman Jack Ma as he arrives for the Fifth Conference of Zhejiang Chamber of Commerce in Beijing, December 6, 2014. Ma was awarded Honorary Chairman of Zhejiang Chamber of Commerce during the conference. REUTERS/Jason Lee (CHINA - Tags: BUSINESS SOCIETY TPX IMAGES OF THE DAY) 

A protester holds her smartphone displaying the phrase "NO WAR" at a rally against Japan's Prime Minister Shinzo Abe's push to expand Japan's military role in front of Abe's official residence in Tokyo July 1, 2014. Abe's cabinet adopted on Tuesday a resolution dropping a ban that has kept the military from fighting overseas since World War Two, Defence Minister Itsunori Onodera confirmed, a dramatic step away from post-war pacifism and a political victory for the conservative premier. REUTERS/Yuya Shino (JAPAN - Tags: CIVIL UNREST POLITICS MILITARY) 

A couple participates during a kissing contest held in celebration of Valentine's Day at the Happy Valley amusement park in Beijing February 14, 2014. About 100 couples competed by kissing in various poses during the competition and an iPhone 5S was presented to the winning couple. REUTERS/Kim Kyung-Hoon (CHINA - Tags: SOCIETY) 

Attendees use cell phones to capture the presentation of the Parkchoonmoo 2014 Fall/Winter collection during New York Fashion Week February 9, 2014. REUTERS/Andrew Kelly (UNITED STATES - Tags: FASHION TPX IMAGES OF THE DAY) 

A woman speaks on her iPhone as she walks on a busy street in downtown Shanghai September 10, 2013. Apple Inc is expected to introduce a cheaper version of the iPhone on Tuesday, bringing one of the industry's costliest smartphones within reach of the masses in poorer emerging markets. The world's most valuable technology company, which many expect to unveil an iPhone 5C in several colors alongside the latest high-end iPhone 5S, is trying to beat back rivals like Samsung Electronics Co Ltd and Huawei Technologies Co Ltd in markets like India and China, where it is fast losing ground. REUTERS/Aly Song (CHINA - Tags: BUSINESS SCIENCE TECHNOLOGY) 

A woman using an iPhone visits the 27th Janadriya festival on the outskirts of Riyadh in this February 13, 2012 file photo. Saudi Telecom Co (STC) is a company with a market capitalisation of $21 billion but no permanent chief executive. It has spent billions of dollars to buy foreign assets, but competitive pressures may force it to focus more on domestic business. Annual profits at Saudi Arabia's biggest telecommunications operator have fallen 43 percent from their 2006 peak, and its part-privatisation has had only limited success in spurring it to make the cost cuts which analysts believe are needed to reverse the slide. REUTERS/Fahad Shadeed/Files (SAUDI ARABIA - Tags: SOCIETY BUSINESS TELECOMS) 

A woman cries during the cremation ceremony of Cambodia's late King Norodom Sihanouk in Phnom Penh February 4, 2013. Tens of thousands of Cambodians gathered on Monday to pay their last respects to former King Norodom Sihanouk, a quixotic and much-loved figure who reigned during the country's struggle for independence but was powerless to prevent decades of war. REUTERS/Samrang Pring (CAMBODIA - Tags: OBITUARY ROYALS) 

Members of the media photograph the iPhone 5 after its introduction during Apple Inc.'s iPhone media event in San Francisco, California September 12, 2012.. REUTERS/Beck Diefenbach (UNITED STATES - Tags: SCIENCE TECHNOLOGY BUSINESS) 

A Chinese bride takes a self portrait before her symbolic wedding in Fuessen May 31, 2012. 15 Chinese couples who already got married in China, travelled to Germany to repeat their promise of marriage at Neuschwanstein Castle, one of the most popular destinations in Europe. REUTERS/Michael Dalder (GERMANY - Tags: SOCIETY) 

A woman takes a picture of U.S. President Barack Obama with her iPhone upon his arrival at Hickam Air Base near Honolulu, Hawaii, December 23, 2011. Obama and his family are spending the end-of-year holidays in Hawaii. REUTERS/Jason Reed (UNITED STATES - Tags: POLITICS) 

A woman uses her iPhone to photograph notes left memorializing Steve Jobs on the exterior of Apple's 14th St store in New York October 6, 2011. Apple Inc co-founder and former CEO Steve Jobs died on Wednesday at the age of 56 after a years-long and highly public battle with cancer and other health issues. REUTERS/Lucas Jackson (UNITED STATES - Tags: BUSINESS OBITUARY PROFILE SCIENCE TECHNOLOGY) 

A woman uses a mobile phone at a bicycle repairing shop in the entrance to a traditional alleyway, or Hutong , in central Beijing August 21, 2011. China Mobile said it hoped to launch Apple iPhones soon to accelerate uptake of high-end 3G services as it reported first-half profit at the top end of expectations. REUTERS/Jason Lee (CHINA - Tags: BUSINESS SCI TECH IMAGES OF THE DAY) 

Customers look at smartphones behind Samsung Electronics' Galaxy Tab tablet (L) and Apple Inc's iPad tablet displayed at a registration desk at the headquarters of South Korean mobile carrier KT in Seoul, in this combination picture made April 19, 2011. Apple sued Samsung Electronics claiming the South Korean firm's Galaxy line of mobile phones and tablets "slavishly" copies the iPhone and iPad, according to court papers, a move analysts say is aimed at keeping its close rivals at bay. Samsung said it would respond to the legal action "through appropriate legal measures to protect our intellectual property." REUTERS/Jo Yong-Hak (SOUTH KOREA - Tags: BUSINESS IMAGES OF THE DAY) 

He Jufen, 28, from Hunan province poses as she works inside a Foxconn factory in the township of Longhua in the southern Guangdong province May 26, 2010. A spate of nine employee deaths at global contract electronics manufacturer Foxconn, Apple's main supplier of iPhones, has cast a spotlight on some of the harsher aspects of blue-collar life on the Chinese factory floor. REUTERS/Bobby Yip (CHINA - Tags: BUSINESS EMPLOYMENT) 

Workers are seen inside a Foxconn factory in the township of Longhua in the southern Guangdong province May 26, 2010. A spate of nine employee deaths at global contract electronics manufacturer Foxconn, Apple's main supplier of iPhones, has cast a spotlight on some of the harsher aspects of blue-collar life on the Chinese factory floor. REUTERS/Bobby Yip (CHINA - Tags: BUSINESS EMPLOYMENT) FOR BEST QUALITY IMAGE ALSO SEE: GF2E9AP0D4F01 

Matthew West, 3, watches a video on his Mom's iPhone while she talks with friends at Starbucks' Roy Street Coffee and Tea in Seattle, Washington, March 25, 2010. REUTERS/Marcus Donner (UNITED STATES) 

Jerry Taylor (C, white cap) holds an Apple iPhone after becoming the first person to purchase the device in San Francisco, California June 29, 2007. REUTERS/Robert Galbraith (UNITED STATES) 

Gili Barbibay, 24, from Israel (R) takes a photo of Kailee Jordan, 23, from San Francisco using an iPhone at the Coachella Valley Music and Arts Festival in Indio, California April 10, 2015. REUTERS/Lucy Nicholson 

Tourists use a selfie-stick for a photograph on a cold and windy day in New York's financial district February 13, 2015. Bitter cold temperatures were expected to grip much of the northeast U.S. Friday and through the weekend as some of the coldest air of the season moved into the region according to local reports. REUTERS/Brendan McDermid (UNITED STATES - Tags: ENVIRONMENT) 

Former U.S. Secretary of State Hillary Clinton poses for a photo with a supporter at the 37th Harkin Steak Fry in Indianola, Iowa September 14, 2014. REUTERS/Jim Young (UNITED STATES - Tags: POLITICS) 

A sales assistant uses her mobile phone next to the company logos of Apple and Samsung at a store in Hefei, Anhui province September 10, 2014. Apple Inc unveiled a watch, two larger iPhones and a mobile payments service on Tuesday as Chief Executive Officer Tim Cook seeks to revive the technology company's reputation as a wellspring of innovation. REUTERS/Stringer (CHINA - Tags: BUSINESS SCIENCE TECHNOLOGY) 

A model uses her mobile phone as she has a temporary tattoo applied backstage before a presentation of the Tommy Hilfiger Spring/Summer 2015 collection during New York Fashion Week September 8, 2014. REUTERS/Lucas Jackson (UNITED STATES - Tags: FASHION) 

A guest wearing a butterfly bracelet takes a selfie with her mobile phone as she arrives on the red carpet for the screening of the film "Saint Laurent" in competition at the 67th Cannes Film Festival in Cannes May 17, 2014. REUTERS/Regis Duvignau (FRANCE - Tags: ENTERTAINMENT)

A woman takes a photo as U.S. President Barack Obama holds an event aimed at increasing transparency about women's pay during an event at the White House in Washington April 8, 2014. Obama signed two executive actions, part of a continuing effort by the administration to ensure women are paid equally to their male counterparts for similar work.
REUTERS/Kevin Lamarque (UNITED STATES - Tags: POLITICS BUSINESS EMPLOYMENT) 

A woman takes a picture with her cell phone of "Genius of the Year", a mosaic dating from the late 2nd century, at the National Archaeological Museum in Madrid March 27, 2014. REUTERS/Juan Medina (SPAIN - Tags: SOCIETY) 

A woman poses for a photo illustration with an iPhone as she plays Candy Crush in New York February 18, 2014. King, the Swedish firm behind hit mobile phone game Candy Crush Saga, is planning a U.S. stock market debut which some analysts think could value it at more than $5 billion and herald a flurry of technology company listings this year. REUTERS/Carlo Allegri (UNITED STATES - Tags: BUSINESS SCIENCE TECHNOLOGY) 

A man carries his girlfriend on his shoulders on Valentine's Day at the Happy Valley amusement park in Beijing February 14, 2014. The amusement park held a kissing competition where about 100 couples competed by kissing in various poses and an iPhone 5S was presented to the winning couple. REUTERS/Kim Kyung-Hoon (CHINA - Tags: SOCIETY) 

A make-up artist photographs a model backstage during preparations for the Jenny Packham Fall 2014 collection during New York Fashion Week February 11, 2014. REUTERS/Brendan McDermid (UNITED STATES - Tags: FASHION) 

A woman takes a photo of her friend in front a red heart before The Heart Truth Red Dress Collection show during New York Fashion Week February 6, 2014. REUTERS/Carlo Allegri (UNITED STATES - Tags: FASHION) 

People pose for photos alongside a pillow bearing the image of Apple's co-founder Steve Jobs as they wait outside an Apple Store to purchase Apple's new iPhone 5S and 5C at Tokyo's Ginza shopping district September 20, 2013. REUTERS/Toru Hanai (JAPAN - Tags: BUSINESS TELECOMS) 

A woman looks at the screen of her mobile phone in front of an Apple logo outside its store in downtown Shanghai September 10, 2013. Apple Inc is expected to introduce a cheaper version of the iPhone on Tuesday, bringing one of the industry's costliest smartphones within reach of the masses in poorer emerging markets. The world's most valuable technology company, which many expect to unveil an iPhone 5C in several colors alongside the latest high-end iPhone 5S, is trying to beat back rivals like Samsung Electronics Co Ltd and Huawei Technologies Co Ltd in markets like India and China, where it is fast losing ground. REUTERS/Aly Song (CHINA - Tags: BUSINESS SCIENCE TECHNOLOGY TELECOMS) 

A woman poses for the media as she shows a shopping app of German supermarket chain Edeka on her iPhone in Berlin, May 29, 2013. Customers of German supermarket chain Edeka Netto are able to pay for their shopping with a an app on their mobile phone, enabling them to leave cash and credit cards at home. REUTERS/Fabrizio Bensch (GERMANY - Tags: BUSINESS) 

A woman dressed in a traditional costume uses a mobile phone at the Daguanyuan temple during a Spring Festival Temple Fair celebrating the Chinese Lunar New Year in Beijing February 12, 2013. The Lunar New Year, or Spring Festival, begun on February 10 and marked the start of the Year of the Snake, according to the Chinese zodiac. REUTERS/Kim Kyung-Hoon (CHINA - Tags: ANNIVERSARY SOCIETY) 

A woman takes a picture with her iPad Mini during the official lighting ceremony of the U.S. Capitol Christmas Tree in Washington December 4, 2012. REUTERS/Jason Reed (UNITED STATES - Tags: SOCIETY) 

A woman takes a photograph using her iPhone of members of the public entering a new Apple store during the official opening in Beijing's Wangfujing shopping district October 20, 2012. The store is Apple's fifth on mainland China, as is being promoted as the largest in Asia. REUTERS/David Gray (CHINA - Tags: BUSINESS) 

Staff applaud as customers enter to get newly released iPhone 5 at an Apple Store in Hong Kong September 21, 2012. Apple Inc's iPhone 5 hit stores around the globe on Friday, with fans snapping up the device that is expected to fuel a huge holiday quarter for the consumer giant. REUTERS/Bobby Yip (CHINA - Tags: BUSINESS SCIENCE TECHNOLOGY LOGO) 

A woman uses her Apple iPhone while waiting to cross 5th Avenue in New York, September 20, 2012. Apple's iPhone 5 goes on sale tomorrow as Apple works to increase it's market share in the mobile phone market. REUTERS/Lucas Jackson (UNITED STATES - Tags: BUSINESS SCIENCE TECHNOLOGY TELECOMS SOCIETY) 

Thandar Tun waits for customers at a public call office (PCO) phone shop in Yangon May 27, 2012. Blackberrys and iPhones aren't much use in Myanmar, where its only network is frequently jammed, data services are scarce, prices extortionate, lines crackly and most phones don't roam. For decades, its telecoms industry has been a shambles. But as Myanmar races ahead with economic reforms, the telecoms sector, riven with graft and mismanagement and lagging behind even Asia's poorest countries, is on the verge of a major shake-up as part of a "reform plan" to liberalise one of the world's last remaining greenfield telcos markets. To match Insight MYANMAR-TELECOMS/ Picture taken May 27, 2012. REUTERS/Jason Szep (MYANMAR - Tags: BUSINESS TELECOMS) 

A woman takes a picture of candle lights forming the characters of "Love and Smile" with her smart phone during the million people's candle night event at Zojoji Temple in Tokyo June 16, 2012. The event was organized to get people thinking about energy conservation and boosting the use of environmentally-friendly energy by turning off lights. Japan on Saturday approved the resumption of nuclear power operations at two reactors despite mass public opposition, the first to come back on line after they were all shut down following the Fukushima crisis. Nuclear power supplied almost 30 percent of electricity needs before the March 2011 disaster, which triggered meltdowns at Fukushima, spewing radiation and forcing mass evacuations. REUTERS/Kim Kyung-Hoon (JAPAN - Tags: ENERGY) 

A woman takes pictures of snow with her iPhone at Ritan Park in central Beijing March 18, 2012. REUTERS/Jason Lee (CHINA - Tags: ENVIRONMENT SCIENCE TECHNOLOGY) 

A woman using an iPhone visits the 27th Janadriya festival on the outskirts of Riyadh February 13, 2012. The two-week-long festival showcases Saudi Arabian culture and traditions. REUTERS/Fahad Shadeed (SAUDI ARABIA - Tags: SOCIETY) 

An employee at the Czech National Bank presents an application called "Czech Money" on an iPad in Prague February 9, 2012. The application allows users to view Czech banknotes in detail and check the protective elements on the iPod, iPhone and iPad. REUTERS/David W Cerny (CZECH REPUBLIC - Tags: BUSINESS SCIENCE TECHNOLOGY) 

A supporter takes a picture of Spain's former Defence Minister Carme Chacon with her mobile phone during a meeting in Olula del Rio, southeast Spain January 7, 2012. Chacon launched her bid to become the next leader of the Spanish Socialist Party (PSOE), which lost power to the centre-right People's Party in elections held on November 20, 2011. REUTERS/Francisco Bonilla (SPAIN - Tags: POLITICS ELECTIONS SCIENCE TECHNOLOGY) 

Keenen Thompson and Jessica Mellow (R) surf the web while waiting in line to buy an iPhone 4S at the Apple Store on 5th Avenue in New York, October 13, 2011. iPhone 4S sales in stores begin October 14 in Japan, Australia, France, UK, Germany, Canada and the United States. REUTERS/Brendan McDermid (UNITED STATESSCI TECH BUSINESS - Tags: SCIENCE TECHNOLOGY BUSINESS TELECOMS) 

A member of a local social network group calling themselves "Medvedev girls" displays a gift for Russian President Dmitry Medvedev's birthday to authorities in the Kremlin September 14, 2011. President Medvedev celebrated his 46th birthday on Wednesday. REUTERS/Denis Sinyakov (RUSSIA - Tags: POLITICS SOCIETY) 

A user loads the Baidu homepage on her Apple iPhone 4 during the Baidu 2011 technology innovation conference in Beijing, September 2, 2011. China's top search engine Baidu Inc launched a new mobile application system on Friday, seeking to bolster its presence in the mobile web as competitors including Alibaba Group increase their mobile offerings. REUTERS/Jason Lee (CHINA - Tags: BUSINESS SCIENCE TECHNOLOGY) 

A woman uses her mobile phone to take a picture of Prime Minister-elect Yingluck Shinawatra of the Puea Thai Party, as she addresses reporters at her party's headquarters in Bangkok July 13, 2011. Yingluck said on Wednesday she was confident her party would emerge unscathed from a series of probes into alleged violations that have so far delayed the endorsement of a July 3 poll. REUTERS/Sukree Sukplang (THAILAND - Tags: POLITICS ELECTIONS BUSINESS) 

A woman uses an Apple iPhone 4 smartphone for Web surfing during a photo opportunity at an Apple store in Seoul May 24, 2011. Picture taken on May 24, 2011. REUTERS/Truth Leem (SOUTH KOREA) 

A guest poses for a photograph with a wax figure of Britain's Prince William, sculpted by Daniel Druet, during a party launching an exhibition by U.S. artist Jennifer Rubell at the Stephen Friedman Gallery in London February 7, 2011. Rubell is inviting members of the public to pose alongside the sculpture, which has a copy of Kate Middleton's engagement ring affixed to William's forearm. REUTERS/Chris Helgren (BRITAIN - Tags: ENTERTAINMENT SOCIETY ROYALS) 

Amateur trader Yan Qin checks her smartphone for stock reports in New York December 7, 2010. Qin, 40, who describes her strategy as "impulsive," said she recently purchased 300 shares of Bank of America. Though she didn't realize it at the time, the amateur trader likely got a tad better deal on the stock than even the most sophisticated Wall Street traders, as her trade was routed it to a large firm known as a market maker, which sold Qin the stock at a slightly cheaper price. The market maker also paid E*Trade Financial Corp a small stipend, and in return got a chance to profit from what the industry considers "uninformed" trades -- or dumb money, to use the term of art. Picture taken December 7, 2010. To match special report MARKETS/DUMB-MONEY REUTERS/Shannon Stapleton (UNITED STATES - Tags: BUSINESS) 

A woman use her mobile phone next to an advertisement for an iPhone 3GS in Bangkok August 30, 2010. Thailand's telecoms regulator said on Monday it had rejected an application from one bidder to join an auction for third-generation mobile phone licences, leaving only the top three telecoms operators in the running. The telecoms regulator plans to hold the 3G auction on Sept. 20-28, a crucial step in reforming the $4.7 billion sector that could pave for foreign players to grab a bigger slice of the industry and change the way companies pay fees to the government. REUTERS/Chaiwat Subprasom (THAILAND - Tags: BUSINESS) 

Huang Xuehua, 24, from Guangdong province works inside a Foxconn factory in the township of Longhua in the southern Guangdong province May 26, 2010. A spate of nine employee deaths at global contract electronics manufacturer Foxconn, Apple's main supplier of iPhones, has cast a spotlight on some of the harsher aspects of blue-collar life on the Chinese factory floor. REUTERS/Bobby Yip (CHINA - Tags: BUSINESS EMPLOYMENT IMAGES OF THE DAY) 

A worker examines a circuit board inside a Foxconn factory in the township of Longhua in the southern Guangdong province May 26, 2010. A spate of nine employee deaths at global contract electronics manufacturer Foxconn, Apple's main supplier of iPhones, has cast a spotlight on some of the harsher aspects of blue-collar life on the Chinese factory floor. REUTERS/Bobby Yip (CHINA - Tags: BUSINESS EMPLOYMENT) 

Matthew West, 3, watches a video on his Mom's iPhone while she talks with friends at Starbucks' Roy Street Coffee and Tea in Seattle, Washington, March 25, 2010. REUTERS/Marcus Donner (UNITED STATES) 

Customers try out the new iPhone 3GS on the first day it is being sold at the Apple Store in Zurich June 19, 2009. REUTERS/Christian Hartmann (SWITZERLAND BUSINESS) 

Iraqi women shop for clothes in Shorja market in Baghdad November 11, 2008. The "genuine" Aladdin's lamp contains no genie, but Baghdad's chaotic central market district seems to offer everything -- from iPhones to flyblown kebabs. With crippling U.N. sanctions a distant memory, shoppers and vendors crowd Rasheed Street in the heart of Iraq's oldest and busiest shopping district, apparently unperturbed by deadly bomb blasts at another market district nearby. REUTERS/Ceerwan Aziz (IRAQ) 

Justine works on an iPhone in the workshop of 'Bling my Thing' in Berlin September 30, 2008. REUTERS/Johannes Eisele (GERMANY)