Verizon Wireless And Sprint Nextel

• Verizon looks to buy Vodafone's stake in joint venture for $100 billion

  Verizon, which already owns 55 per cent of the company, which is the biggest US wireless carrier, has not put a proposal to Vodafone yet but it has hired both banking and legal advisers for a possible bid, the sources said.

• Samsung's Galaxy S4 emerges to battle on Apple's home turf

  Samsung Electronics Co premiered its latest flagship phone, the Galaxy S4, which sports a bigger display and unconventional features such as gesture controls, as the South Korean titan challenges Apple Inc on its home turf.

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  iPhone 4S pre-orders top 1 million in 24 hours

  First-day orders for the iPhone 4 were 600,000 when it launched last year. It was then sold in the U.S. only by AT&T Inc. The iPhone 4S is also sold by Verizon Wireless and Sprint Nextel Corp.

• AT&T profit beats as iPhone sales drop helps margins

  Consolidated revenue rose nearly 2 per cent to $31.8 billion from $31.25 billion.

• New iPad expected to have modest upgrades

  Apple is expected to reveal a new iPad model, with a sharper screen and perhaps faster wireless broadband.

• iPhone 4S pre-orders top 1 million in 24 hours

  First-day orders for the iPhone 4 were 600,000 when it launched last year. It was then sold in the U.S. only by AT&T Inc. The iPhone 4S is also sold by Verizon Wireless and Sprint Nextel Corp.