Samsung has released a new flagship smartphone, the Galaxy S3, including voice control, wireless beaming of content and exclusive apps, as it aims to consolidate its position at the top of the mobile sector.

The phone will go on sale on 30 May in the UK, with Orange and Phones4U already lined up to sell it. No price has yet been given. It will go on sale in the US this summer. Samsung said it will go on sale with 296 carriers in 145 countries. It can connect at "4G" speeds in compatible countries.

It comes in a 15GB or 32GB version, though the company said a 64GB model would come soon. Buyers can get an optional wireless charging pad, similar to that offered with the now-defunct HP TouchPad last year.

At 4.8in, the screen size is only just below the minimum 5in that most analysts class as a tablet – indicating Samsung's confidence that top-end users will want larger screens. The first-generation Galaxy S in 2010 had a 4in screen; the S2, a 4.3in screen.

If developers start to target Samsung APIs for apps, that could potentially split the Android platform still further beyond the individual versions produced by Google – and would also tend to increase Samsung's control of Android.

But the new Galaxy S3 could also pose problems for the smaller players in the Android space, Fogg suggested. "Samsung's marketing spend and brand awareness are second to none. This combination of marketing spend and channels will cause serious problems for smaller handset makers such as HTC, LG and Motorola."