Ofcom has published its latest quarterly complaints data, showing the major telecoms providers that generated the most complaints between April and June 2011.

In the mobile sector, Ofcom received the most complaints about Three UK. The network - which was also top for complaints in the previous report - had 0.14 complaints per 1000 customers, an increase from the previous quarter. Ofcom says the increase in complaints seems to have been driven by customer billing and customer service issues.

Live video broadcasting service Bambuser has launched a number of updates today.

A new ‘maps’ feature uses Google Maps to show where in the world live broadcasts are being made from. In addition, it’s possible to find broadcasts previously made from a specific location.

Orange and Barclaycard say the bada-powered Samsung Wave 578 will be the next mobile phone compatible with Quick Tap contactless payments in the UK.

The first phone, the Samsung Tocco Quick Tap, was revealed in May when the service launched.

The worldwide market for ‘mobile learning’ products and services will grow from $3.2 billion last year to reach $9.1 billion (approaching £5.9 billion) by 2015, according to a new report from Ambient Insight. That’s a compound annual growth rate of 22.7%.

Ambient Insight says the countries with the highest Mobile Learning growth rates are China, India and Indonesia; all have a growth rate of over 60% year-on-year.

A new report from ABI Research calculates that the number of people accessing social networks from mobile phones will exceed 550 million this year.

By the end of 2016 the figure will treble to over 1.7 billion users worldwide, which means over two-thirds of all social network users will be using mobiles to access the services.