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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New Delhi, Nov 21: Even Ajmal Kasab was given a fair trial in our country, the Supreme Court on Thursday remarked and indicated it may set up a courtroom inside Tihar Jail for the trial of J&K separatist leader Yasin Malik in a kidnapping case.

A bench of Justices Abhay S Oka and Augustine George Masih was hearing a CBI plea against the September 20, 2022 order of a Jammu trial court that directed Malik, serving life term in Tihar jail, to be produced before it physically to cross-examine the prosecution witnesses in the kidnapping case of Rubaiya Sayeed, daughter of politician Mufti Mohammad Sayeed.

The bench, however, remarked, "How will cross-examination be done online? There is hardly any connectivity in Jammu... In our country, a fair trial was given even to Ajmal Kasab and legal assistance was given to him in the high court."

Kasab, the lone Pakistani gunman caught alive after the Mumbai terror attack, was hanged till death at the Yerawada Central Prison .

The bench told Solicitor General Tushar Mehta, representing the CBI, to take instructions on the total number of witnesses in the case.

Mehta pointed out security concerns and said Malik couldn't be taken to Jammu for the trial.

The law officer accused Malik of "playing tricks" for having asked to appear personally and not engaging a lawyer. Mehta said Malik was not an ordinary criminal and showed a purported photograph of Malik sharing the dais with terrorist Hafiz Saeed.

The top court said it could order trial to take place inside the jail premises and ask the judge to come to the national capital for the proceedings.

The bench, however, noted all the accused persons in the matter had to be heard before it passes an order.

Mehta said Malik appearing in the Supreme Court physically raised security concerns previously.

The bench said Malik could be allowed to appear virtually in the apex court proceedings and posted the matter on November 28.

The CBI in the meantime was directed to amend its petition and implead all accused persons as respondents.

In 2023, Mehta wrote to then Union Home Secretary Ajay Kumar Bhalla flagging a "serious security lapse" after Malik was brought to the Supreme Court to appear in a case.

Malik, serving life sentence in a terror-funding case, was brought to the high-security apex court premises in a prison van escorted by armed security personnel without the court's permission.

Expressing surprise at his presence, Mehta informed the apex court there was a procedure for high-risk convicts to be allowed into the courtroom to argue their case personally.

The CBI said Malik, the top leader of the Jammu and Kashmir Liberation Front (JKLF), was a threat to national security and cannot be allowed to be taken outside the Tihar jail premises.

The apex court on April 24, 2023, issued notices on the CBI's appeal following which the incarcerated JKLF chief wrote a letter to the registrar of the Supreme Court on May 26, 2023 seeking permission to appear in person to plead his case.

An assistant registrar took up his request on July 18, 2023 and said the apex court would pass necessary orders -- a decision the Tihar Jail authorities reportedly misconstrued to allow Malik to appear and argue his case.

Mehta referred to the CBI's contention in its appeal against the trial court order to bring Malik to Jammu for the in-person examination of the witnesses in the kidnapping case, and said under Section 268 of the CrPC a state government may direct certain people to not be shifted from the confines of a prison.

On September 20, 2022, a special TADA court in Jammu directed Malik to be physically produced before it on the next hearing for him to cross-examine prosecution witnesses in the kidnapping case.

The CBI challenged the trial court order before the Supreme Court as appeals in TADA cases are only heard by the top court.

Rubaiya was abducted near Lal Ded Hospital in Srinagar on December 8, 1989 and freed five days later after the then BJP-backed V P Singh government at the Centre released five terrorists in exchange.

Mufti, who now lives in Tamil Nadu, is a prosecution witness of the CBI, which took over the case in early 1990s.

Malik is lodged in Tihar jail after he was sentenced by a special NIA court in May, 2023 in a terror-funding case.