After catching up with last week's Microsoft announcement about new CEO Satya Nadella, we go on to talk about big changes for Brightstar and Sony as well.

There's also mobile payment news from MasterCard and Weve, some patent agreements, a warning about second-hand smartphone sales, a forecast of mobile data growth and a report about app developers.

Mark Bridge writes:

Mobile phones have been hitting the mainstream news over the past few days. There was Channel 4’s report about data on second-hand phones not being properly deleted before the handsets were re-sold, there was the latest round of the Smart UK Project and there was Tim Muffett’s story about the mobile-enabled high street on BBC Breakfast this morning.

Weve - the UK mobile payment and mobile advertising venture formed by EE, O2 and Vodafone - says it’s partnering with MasterCard to speed up the development of a contactless mobile payments system.

The new system will make it easier for banks to offer ‘tap and pay’ services to mobile phone users.

Analyst firm Ovum has published its mobile payment and mobile advertising predictions for this year.

Ovum expects continued technology and service innovation, notably around location-based applications, in the mobile payments space in 2014. However, there will be increasing complexity within the mobile payments ecosystem this year, and on-going challenges around the business model for digital wallet services.

New figures from ABI Research show that shipments of SIM cards fell by 193 million to 4.94 billion units in 2013, which is a year-on-year decline of 3.8%.

The main factor blamed for this drop was the mobile telecom market in Asia, where SIM card shipments fell below 2011 levels with a 10% decrease.