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.

Everything Everywhere says CEO Tom Alexander is resigning "for personal reasons and to pursue other interests". He'll step down on 31st August 2011 and will be replaced by non-executive director Olaf Swantee, who's currently France Telecom’s Executive Vice President of Operations in Europe.

Mr Alexander will continue to advise the company until the end of the year.

Mark Bridge writes:

There's been a bit of a location-based theme in the mobile industry this week.

Hardly surprising, with a new report from Pyramid Research saying location-based advertising is becoming increasingly popular – and NAVTEQ revealing that most consumers are happy receiving promotional offers in exchange for free location-related content.

In The Fonecast this week we talk about mobile payment plans from the 'big three' network operators, a new bill-paying app from Pizza Express, spectrum trading, Nokia's new MeeGo smartphone, RIM's problems and a lot more.

Download this week's show from iTunes - or listen to the podcast by using the audio player on our website.

Everything Everywhere, Telefonica UK and Vodafone UK have announced plans to create a standalone m-commerce joint venture. It'll combine the expertise from Orange, T-Mobile, O2 and Vodafone to speed the development and delivery of new mobile marketing and payment services.

Subject to regulatory clearance, the joint venture will provide a single point of contact for advertisers, marketing partners, retailers and banks. It's aiming to launch by the end of 2011.