Today's Tech: Samsung prepares bendy smartphone for October launch and Amazon reveals new lighter, faster Kindle Fire HDX

Samsung has revealed it will release a smartphone featuring a curved display in October. Speaking at a launch event for the Galaxy Note 3 phablet in Seoul, Samsung mobile exec D J Lee said, "We plan to introduce a smartphone with a curved display in South Korea in October." He did not say when the device will be available elsewhere. At the CES consumer electronics trade show In January, Samsung unveiled its Youm flexible display technology in a demonstration for which a small screen was bent and folded whilst playing a video. The curved display smartphone will be the first use of this new technology on a mass produced handheld consumer device.

Amazon has today launched the third generation of its Kindle Fire tablet - the Kindle Fire HDX - which includes 24/7 live tech support through a dedicated 'mayday' button. The tablet is available in 7in and 8.9in displays, both of which, as perhaps expected from the name, have beyond HD pixel density (323 ppi for 7in, 339 ppi for 8.9in). Both also feature a quad-core Snapdragon 800 2.2 GHz processor. According to Amazon, the 8.9in model, weighing in at just 13.2 ounces, is also the lightest large-screen tablet out there, as well as being 34 per cent lighter than its predecessor. Perhaps the most interesting development is the Mayday button, however. The free service allows any user to call into Amazon technical support at any time of any day. Pressing the button will bring up a video link to a member of the Amazon tech team who will guide the user through any problems.

Over half of free public Wi-Fi hotspots in the UK allow access to pornography and other inappropriate material, a new study has found. Almost a third of UK cafés and restaurants have no filters in place to stop children accessing pornography, with an additional 20 per cent allowing access to less explicit adult sites such as sex dating services including AdultFriendFinder.com. The research by mobile security firm AdaptiveMobile sent mystery shoppers to 179 sites in London, Manchester and Birmingham, asking them to access inappropriate content including pornography, drug and violence related websites. "For every parent across the UK this report will come as an unwelcome surprise," said Graeme Coffey, AdaptiveMobile's VP of product strategy and business development.

Nokia will launch six new devices at next month's Innovation Reinvented event, with at least two of the products new additions to the popular Lumia range. Sources familiar with Nokia's road-map told The Verge that the event in Abu Dhabi on 22 October will see at least six new devices and a range of new accessories with one of them dubbed "pretty special". One of the devices released at the event is likely to be the Lumia 1520 phablet that has been rumoured for some time. The same publication also reports that a "large range" of different form factor devices will get a release and it further suggests that one of the releases will be Nokia's first Windows RT tablet. The Lumia 1520, originally known as "Bandit", is rumoured to have a 6in screen that benefits from a 1080p Full HD display and has a near identical look to the remainder of the Lumia range.