Mark Bridge writes:

I like a bit of competition. It can encourage innovation, whether it's NASA's moon landings or Formula 1's telemetry. And it can be entertaining to watch, from Premiership football to the Tour de France.

It's one of the reasons the mobile industry still excites me. Although the frenzied growth of the 1990s is gone, there are still many competing forces.

This week's podcast takes a look at Everything Everywhere's departing CEO, Vodafone's security concerns, ZTE's own-brand phones, HTC's legal worries and Sony Ericsson's results. As usual, the programme is hosted by Iain Graham with James Rosewell and Mark Bridge.

Apple has published financial results for the third quarter of its current financial year. It's announced record quarterly revenue of $28.57 billion (£17.7 billion) and record quarterly net profit of $7.31 billion.

In the quarter, which ended on 25th June 2011, the company sold 20.34 million iPhones (up 142% year-on-year) and 9.25 million iPads (up 183%).

Back in March 2009, Vodafone signed an agreement with Opera Software to develop a custom version of the Opera Mini mobile web browser.

The two companies have now signed a three-year extension of their agreement, with the number of active users of the Opera Mini browser having increased by 300% year-on-year.

Networking giant Cisco says it's cutting approximately 6,500 jobs from its businesses worldwide, which will account for around 9% of the company’s jobs. This figure includes approximately 2,100 employees who've chosen early retirement.

The move is part of the company's previously-announced plan to cut annual costs by $1 billion.