Seoul: Samsung Electronics on Friday released the Galaxy S10 5G, the world's first available smartphone with built-in fifth-generation communications technology, as South Korea seeks to build a lead in the transformative system.

On Wednesday the South became the first country to commercially launch nationwide 5G services, with three superfast networks going live offering data speeds that allow users to download entire movies in less than a second.

Hours later US giant Verizon began commercial services in Chicago and Minneapolis, after rival AT&T made a 5G-based system available to selected users in parts of 12 cities in December.

South Korea's three mobile carriers -- SK Telecom, KT and LG Uplus -- held launch events across Seoul for the Galaxy S10, whose base version costs 1.39 million won ( 1,200).

Interactive virtual-reality displays and robot demonstrations were on show to tout the capabilities of the latest iteration of mobile internet speed, and new users were excited about the possibilities, especially live streaming of sports games and university lectures.

"I watch a lot of videos often, movies and lectures," said buyer Shim Ji-hye, 38. "I hope faster speeds will help me manage my time better."

Another user said he was most excited about virtual reality content -- which includes games and even "celebrity VR dating" apps according to the country's mobile carriers.

With 5G, said researcher Lee Sang-yoon, VR content "can be enjoyed in real time with no delay... I'll be able to enjoy it in better resolution and speed".

Before Friday's roll-out of the Samsung phone, the 5G service had been restricted to a handful of specially selected users in South Korea.

Rival manufacturer LG is due to launch its V50 ThinQ, another 5G phone, in the South later this month, while in the US, Verizon's network works with Lenovo's Moto Z3 smartphone fitted with a special accessory.

Commercialising 5G gives South Korea the chance to build around the technology, which is crucial for the future development of devices such as autonomous vehicles and the Internet of Things.

It is expected to bring about 565 billion in global economic benefits by 2034, according to the London-based Global System for Mobile Communications, an industry alliance.

The implications of the new technology have pitted Washington against Beijing -- whose firms dominate 5G technology -- in an increasingly bitter standoff.

The US has pressed its allies and major economies to avoid 5G solutions from Chinese-owned telecom giant Huawei, citing security risks that technological backdoors could give Beijing access to 5G-connected utilities and other components.

Chinese entities own a total of 3,400 5G patents -- more than a third of the total, according to data analysis firm IPlytics -- with 1,529 of those registered by Huawei.

South Korea comes next, with its companies holding 2,051 patents, while US firms have 1,368 together.

Neither KT nor SK Telecom use Huawei technology in their 5G networks, but it is a supplier to LG UPlus, the companies told AFP.

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Chennai, Apr 23: Shane Watson brought back memories of last year's IPL final with a blazing knock that has now almost ensured a play-off berth for Chennai Super Kings as they beat Sunrisers Hyderabad by six wickets here Tuesday.

On a vastly improved Chepauk track, Watson roared back to form with an 96 off 53 balls as CSK stuttered a bit in end before winning in 19.5 overs.

Watson's innings studded with nine fours and half a dozen of sixes ensured that CSK have reached the cut-off limit of 16 points needed for the play-off even though they would like to finish in the top two.

Watson's innings would also be a relief for skipper Mahendra Singh Dhoni, who had urged the top order to finish matches.

A 77-run stand between Watson and Suresh Raina (38) created the platform and the former Australia all-rounder singlehandedly decimated the Sunrisers attack.

What made it more difficult for the Sunrisers was the fact that their strike bowler Rashid Khan was pulverised by Watson, who took him to the cleaners with 44 coming off his spell.

Sandeep Sharma was another bowler, who was handed severe punishment as he went for 54 in 3.5 overs. Sandeep repeatedly bowled short and Watson would gleefully pull him. Skipper Bhuvneshwar Kumar (1/18 in 4 overs) had no option but to bowl the 19th over and left Sandeep with nine runs to defend.

However Kedar Jadhav literally finished the match with a six off the second ball that sealed the deal.

Earlier, the immensely talented Manish Pandey was back in his element as his unbeaten 83 off 49 balls powered Sunrisers Hyderabad to a fighting 175 for 3 after being put into bat.

Pandey and league's current leading run-scorer David Warner (57 off 45 balls) added 115 runs for the second wicket to lay the foundation for a decent score on what was the best batting track on offer at the Chepauk.

Veteran spinner Harbhajan Singh struck an early blow, having the in-form Jony Bairstow caught behind in the second over for a duck.

He was the most successful bowler with figures of 2 for 39 in four overs while Deepak Chahar picked up the wicket of Vijay Shankar (26 off 20 balls).

Despite the early dismissal of Bairstow, the visiting team didn't get tied down as the irrepressible Warner and Manish Pandey kept hitting those boundaries and sixes. They brought up the team's 50 in the sixth over.

Pandey who has not been in the best form, hit his straps, scoring freely and was not afraid to go over the top. Dhoni's shuffling of the bowlers didn't make much of an impact as Warner and Pandey kept attacking.

Pandey was the first to reach 50 in 25 balls, pulling one from Dwayne Bravo for a boundary.

Warner was a touch slower in comparison to Pandey, but didn't miss out when the opportunity presented itself and hit a couple of big sixes.

The pugnacious Warner fell against the run of play, victim of Dhoni's trademark lightning quick stumping off a Harbhajan delivery. The Australian, who is leading the run charts this season, fell for 57 (45 balls, 3x4, 2X6) after adding 115 runs for the second wicket with Pandey.