Archive for the ‘Mobile’ Category

Samsung Galalaxy S4 teardown

Friday, March 15th, 2013

Samsung S III, remains the world’s most popular Android phone, having sold over 40 million units. The new version Samsung Galaxy S IV will be announced soon. Thanks to the leak from some Chinese forum and Samsung I9500 Galaxy S4 page we know what to expect.

First start with introduction. There is a IDG video of Galaxy S4. A hands-on video of Samsung flagship Galaxy S4 have also emerged on YouTube. Here is video Samsung Galaxy S4 World First Hands-on i9502 China Unicom Ver.

Gizmodo has Samsung Galaxy S IV Hands On: Everything New Is Old Again article tries to take a look at if Samsung S IV live up to the hype it has generated. There has been a ton of hype and build-up to this device, and ultimately, it left the article writers feeling cold and uninspired.

Then to the hardware details for all you hardware hacker readers. It is always fun to see what is inside new high-tech gadgets. Chinese Tech Site Disassembles the Samsung Galaxy S IV Before it Gets Official Release article gives you interesting details what is inside this soon to be release smartphone. There are many good pictures in this article.

Touch screens and charger noise

Tuesday, March 12th, 2013

Why does not my tablet touch screen work when powered with third party mains power supply, but works with the original power supply? This happened to me. The power supplied I had were both for tablets (different tablets) and had similar basic characteristics (same current and voltage ratings).

The reason why the other power supply caused the touch screen to fail was related to the noise given out by the power supplies and the touch screen electronics sensitivity to this noise. One power supply outputs more noise than the other. How this noise affect the touch screen electronics is shown in this picture MoU regarding Harmonisation of a Charging Capability for Mobile Phones, June 5th, 2009.

This is nothing new, just now well documented what happens. This same happens with practically any today’s mobile phone charged based on switch mode power supply technology. Smart-phones and tablets need to be designed so that they can live with it. And power supplies needs to be designed to that they do not put out too much noise. Some details on this can be found at my EU standards for common mobile phone charger article.

Dealing with noise is an important aspect of any real-world electronic system, especially in a capacitive touchscreen in a cell phone or tablet. Noise Immunity of Touchscreen Devices web page tells that while there are many sources of noise that can interfere with capacitive touch sensing, the most prominent ones originate in displays and battery chargers. Cypress Offers Battery Charger Noise Immunity web page tells that low-cost chargers lack critical noise suppression components and can generate tens of volts (peak to peak) across the frequency spectrum of 1 Hz to 1 MHz. These voltage spikes can go directly into the touch panel during the presence of touch, severely impacting touch performance. Mobile phone vendors have worked together to create EN 62684 and EN301489, standards that regulate the noise spectrum for battery chargers.

Cypress Offers Battery Charger Noise Immunity web page tells touch screen controllers are developing all the time. It tells that a new TrueTouch feature Charger Armor enables touchscreens in mobile devices to function seamlessly by preventing inaccurate touch readings, which are often caused by common-mode noise from inexpensive chargers.

It is a good thing that those touch controllers are improving, because many people (electronics designers and users) struggle to overcome charger noise.

Theremin technology in touchless display

Sunday, March 3rd, 2013

I just saw news in several news sources (check the links on this article to get to them) that STMicroelectronics wants to lure more contracts from the world’s biggest phone-makers with a new trick: touchless screens. The new display is the touch screen, except that it does not touch, but fingers are several centimeters above the screen. Touchless touch screen gives you control without contact (video) article has even a video of the technology.

At this year’s Mobile World Congress in Barcelona, chipmaker STMicroelectronics is showcasing screen technology that works by just hovering your hand a few inches away from the surface. Users don’t have to touch a screen (just hover your fingers over screen) to flip through an e-book or surf the Web. No more finger smudges.

It’s the latest in mobile technology, but it was inspired by an invention done nearly a hundred years ago: There was a nice musical instrument invented in 1919 by a Russian guy called Theremin. With Threremin instrument you could play music with your hands by hovering above it, without even touching the device. “That’s how we came up with the idea.”

There’s nothing special about the touch screen itself, but rather about the controller chip that manages the panel. Rather than monitoring contact with the screen, the chip observes the electrical field that the tablet’s touch screen is giving off: If your finger makes its way into that electrical field, the circuit is closed and your “touch” is registered.

This new STMicro’s hover screen technology will be used later this year in a multimedia tablet, but who makes it was not revealed yet (STMicroelectronics customer list includes Samsung, Apple, Nokia and Blackberry). STMicroelectronics calls its chip tech Fingertip, and the demo system was up and running on a Nexus 7 tablet. I think that STMicroelectronics will be trying to persuade smartphone manufacturers like Apple and Samsung to use its controller chips in upcoming smartphones.

Those who can’t wait for the hover-screen devices can try their hand now on the theremin. There are many plans you can find on Internet by just making Google search with keywords “theremin circuit”. The 2006 Minimum Theremin looks to be worth to check out design using quite modern components. More theremin plans can be found at Theremin World. To get introduction how to play them watch Theremin Lesson One video.

ThereminVision is a robotic sensing system that uses the same basic principle as the world’s first electronic musical instrument, the Theremin. There was a good web site on that ThereminVision at http://thereminvision.com/, but this site does not seem to exist anymore. Fortunately Internet Archive has archived the site so the information is not lost. This ThereminVision is interesting idea that I have even tested. Check the ThereminVision material to get idea on using the technology for sensing applications.

What do you think of the no-touching touch screen? Just a new gimmick or enabler of new applications?

Lumia 920 service tips and manual

Thursday, January 31st, 2013

Need to fix your Nokia? I have published earlier several tips on fixing Nokia phones, for example fixing N73 and Lumia 800. Here is something fore the newest Lumia phone owners: How to take the Nokia Lumia 920 apart – for the DIY crowd

Here is another video that shows how to replace the battery and all the other parts.

Windows Phone Central reports that service manual for Lumia 920 now leaked online. Article gives download link and there is another link at discussion forum.

Even if you are not planning to repair your new phone you might be interested to take a look at the leaked service manual because Nokia Lumia 920 Service Manual Reveals Internal Components used to build the phone. It also shows reveals large wireless charging coil construction.

Telecom and networking trends 2013

Wednesday, January 16th, 2013

One of the big trends of 2013 and beyond is the pervasiveness of technology in everything we do – from how we work to how we live and how we consume.

Worldwide IT spending increases were pretty anemic as IT and telecom services spending were seriously curtailed last year. It seems that things are going better. Telecom services spending, which has been curtailed in the past few years, only grew by a tenth of a point in 2012, to $1.661tr, but Gartner projects spending on mobile data services to grow enough to more than compensate for declines in fixed and mobile voice revenues. Infonetics Research Report sees telecom sector growth outpacing GDP growth. Global capital expenditure (capex) by telecommunications service providers is expected to increase at a compounded rate of 1.5% over the next five years, from $207 billion in 2012 to $223.3 billion in 2017, says a new market report from Insight Research Corp.

Europe’s Telco Giants In Talks To Create Pan-European Network. Europe’s largest mobile network operators are considering pooling their resources to create pan-European network infrastructure, the FT is reporting. Mobile network operators are frustrated by a “disjointed European market” that’s making it harder for them to compete.

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“Internet of Things” gets new push. Ten Companies (Including Logitech) Team Up To Create The Internet Of Things Consortium article tell that your Internet-connected devices may be getting more cooperative, thanks to group of startups and established players who have come together to create a new nonprofit group called the Internet of Things Consortium.

Machine-to-Machine (M2M) communications are more and more used. Machine-to-machine technology made great strides in 2012, and I expect an explosion of applications in 2013. Mobile M2M communication offers developers a basis for countless new applications for all manner of industries. Extreme conditions M2M communication article tells that M2M devices often need to function in extreme conditions. According to market analysts at Berg Insight, the number of communicating machines is set to rise to around 270 million by 2015. The booming M2M market is due to unlimited uses for M2M communications. The more and more areas of life and work will rely on M2M.

Car of the future is M2M-ready and has Ethernet. Ethernet has already been widely accepted by the automotive industry as the preferred interface for on-board-diagnostics (OBD). Many cars already feature also Internet connectivity. Many manufacturers taking an additional step to develop vehicle connectivity. One such example is the European Commission’s emergency eCall system, which is on target for installation in every new car by 2015. There is also aim of Vehicle-to-Vehicle communications and Internet connectivity within vehicles is to detect traffic jams promptly and prevent them from getting any worse.

M2M branches beyond one-to-one links article tells that M2M is no longer a one-to-one connection but has evolved to become a system of networks transmitting data to a growing number of personal devices. Today, sophisticated and wireless M2M data modules boast many features.

The Industrial Internet of Things article tells that one of the biggest stories in automation and control for 2013 could be the continuing emergence of what some have called the Internet of Things, or what GE is now marketing as the Industrial Internet. The big question is whether companies will see the payback on the needed investment. And there are many security issues that needs to be carefully weighted out.

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Very high speed 60GHz wireless will be talked a lot in 2013. Standards sultan sanctifies 60GHz wireless LAN tech: IEEE blesses WiGig’s HDMI-over-the-air, publishes 802.11ad. WiFi and WiGig Alliances become one, work to promote 60GHz wireless. Wi-Fi, WiGig Alliances to wed, breed 60GHz progeny. WiGig Alliance’s 60GHz “USB/PCI/HDMI/DisplayPort” technology sits on top of the IEEE radio-based communications spec. WiGig’s everything-over-the-air system is expected to deliver up to 7Gbit of data per second, albeit only over a relatively short distance from the wireless access point. Fastest Wi-Fi ever is almost ready for real-world use as WiGig routers, docking stations, laptop, and tablet were shown at CES. It’s possible the next wireless router you buy will use the 60GHz frequency as well as the lower ones typically used in Wi-Fi, allowing for incredibly fast performance when you’re within the same room as the router and normal performance when you’re in a different room.

Communications on power line still gets some interest at least inside house. HomePlug and G.hn are tussling it out to emerge as the de-facto powerline standard, but HomePlug has enjoyed a lot of success as the incumbent.

Silicon photonics ushers in 100G networks article tells that a handful of companies are edging closer to silicon photonics, hoping to enable a future generation of 100 Gbit/s networks.

Now that 100G optical units are entering volume deployment, faster speeds are very clearly on the horizon. The push is on for a 400G Ethernet standard. Looking beyond 100G toward 400G standardization article tells that 400G is very clearly on the horizon. The push is now officially “on” for 400-Gigabit Ethernet standard. The industry is trying to avoid the mistakes made with 40G optics, which lacked any industry standards.

Market for free-space optical wireless systems expanding. Such systems are often positioned as an alternative to fiber-optic cables, particularly when laying such cables would be cost-prohibitive or where permitting presents an insurmountable obstacle. DARPA Begins Work On 100Gbps Wireless Tech With 120-mile Range.

Mobile trends and predictions for 2013

Sunday, January 6th, 2013

Mobile data increased very much last year. I expect the growth to continue. If operators do not invest enough to their network and/or find suitable charging schemes the network can become more congested than before.

4G mobile device speeds becomes the new standard. As competition move to that end, there will be fast growth there. Shipments of ‘4G’ LTE devices, that is handsets, dongles and tablets, reached almost 103 million units in 2012, according to figures published by ABI Research. It interesting that almost 95% of the devices shipped went to North America and the Asia-Pacific.

3G will become the low-cost option for those who think 4G option is too expensive. What is interesting to note is that not everyone who upgraded to an LTE-capable device last year took out an LTE subscription; in fact, only around half of LTE device owners also have an LTE subscription.

The shift to 4G can take many more than year to fully happen even in USA. ABI expects the rate at which 3G subscribers with LTE handsets upgrade to LTE connections will gather pace over the next two years. And even longer in Europe. Carriers should not be panicking. And 3G will live and expand besides 4G for quite a long time. For many of those living outside cities, 3G internet connections are still hard to come by.

Apple and Samsung will continue to make money this year as well as people rate Apple and Samsung more highly than ever. Accountant Deloitte predicts that Smartphone sales to hit 1bn a year for first time in 2013.

Samsung is currently the world’s leading seller of phones and televisions. Those leaders should be careful because competition is getting harder all the time. Samsung boss has given warning on this to employees. Remember what what happened to Nokia.

Deloitte expects that the number of active phones with either a touch screen or an alphabet keyboard to be two billion by the end of the year.

Android will dominate smart phone market even stronger than before. Digitimes Research: Android phones to account for 70% of global smartphone market in 2013.

Windows Phone 8 situation is a question mark. Digitimes predicts that Shipments of Windows Phones, including 7.x and 8.x models, will grow 150% on year to 52.5 million units in 2013 for a 6.1% share. There is one big force against Windows Phone: Google does not bother doing services for Windows Phone 8, Google’s sync changes are going to screw Gmail users on Windows Phone and there are issues with YouTube. Does Windows Phone even have a chance without Google? For active Google service users the changes are pretty that they get this phone.

Competition on smart phones gets harder. It seems that smart phone business have evolved to point where even relatively small companies can start to make their own phones. Forbes sees that Amazon, Microsoft, Google, will all introduce branded mobile phones.

Patent battles are far from over. We will see many new patent fights on smart phones and tablets.

Mobile phones still cause other devices to become redundant. Tietoviikko tells that last year mobile phone made redundant the following devices: small screen smart phones (4 inch or more now), music buying as individual tracks or discs, navigators (smart phone can do that) and a separate pocket size camera. Let’s see what becomes redundant this year.

Many things happens on Linux on mobile devices. Ubuntu now fits in your phone. Firefox OS phones from ZTE will come to some markets. ZTE plans to make Open webOS phone. Meego is not dead, it resurrects with new names: Samsung will release Tizen based phones. Jolla will release Sailfish phones.

Cars become more and more mobile communications devices. Car of the future is M2M-ready. Think a future car as a big smart phone moving on wheels.

Nokia seemed to be getting better on the end of 2012, but 2013 does not look too good for Nokia. Especially on smart phones if you believe Tomi T Ahonen analysis Picture Tells it Better – first in series of Nokia Strategy Analysis diagrams, how Nokia smartphone sales collapsed. Even if shipment of Windows Phone 8 devices increase as Digitimes predicts the year will be hard for Nokia. Tristan Louis expects in Forbes magazine that Nokia abandons the mobile business in 2013. I think that will happen this year, at least for whole mobile business. I have understood that basic phone and feature phone phone business part of Nokia is quite good condition. The problems are on smart phones. I expect that Windows Phone 8 will not sell as well as Nokia hopes.

Because Nokia is reducing number of workers in Finland, there are other companies that try to use the situation: Two new Finnish mobile startups and Samsung opens a research center in Espoo Finland.

Finnish mobile gaming industry has been doing well on 2012. Rovio has been growing for years on the success of Angry Birds that does not show slowing down. Supercell had also huge success. I expect those businesses to grow this year. Maybe some new Finnish mobiel game company finds their own recipe for success.

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Late addition: Wireless charging of mobile devices is get getting some popularity. Wireless charging for Qi technology is becoming the industry standard as Nokia, HTC and some other companies use that. There is a competing AW4P wireless charging standard pushed by Samsung ja Qualcomm. Toyota’s car will get wireless mobile phone charger, and other car manufacturers might follow that if buyers start to want them. Wireless charge option has already been surprisingly common variety of devices: Nokia Lumia 920, Nexus 4, HT, etc. We have to wait for some time for situation to stabilize before we see public charging points in cafeterias.

Ubuntu now fits in your phone

Thursday, January 3rd, 2013

My earlier blog posting Ubuntu Linux for Smartphones from 2011 reported Ubuntu Linux heads to smartphones, tablets, and smart TVs. Canonical plans to compete against Android, iOS and Windows on the smartphones.

Now Canonical has something to tell on smartphone sector: Canonical unveils Ubuntu phone OS that doubles as a “full PC”. Ubuntu now fits your phone. Canonical is now seeking OEMs: Who will build Ubuntu phones? Ubuntu phones are expected to be available at year 2014.

For more details go to Ubuntu for Phone page and view Canonical announces Ubuntu for smartphones, we go hands-on (video).

Ubuntu for Phone use technology from Android: core system is based around a typical Android Board Support Package (BSP) and it uses same drivers as Android. The system is designed to run native apps and lightweight HTML5 apps. All core applications are designed to run at full native speeds with a small memory footprint without overhead of a Java virtual machine. The system runs on ARM and Intel x86 architectures.

Entry level Ubuntu smartphone would use 1Ghz Cortex A9 ARM core with 512MB – 1GB of memory. That’s pretty normal for a decent today’s smartphone.

Ubuntu tries to pave the way for a new category of superphones, with a full PC desktop accessible just by docking the device to a monitor and keyboard. That category would use Quad-core A9 or Intel Atom processor with at least 1GB of memory. The idea is that high-end smartphones would have have a brain as powerful as ultra-light laptops.

Let’s see if this new mobile system finds it’s place on the mobile market place or not. It is a very hard place to push into at the moment because Android and iOS dominance. Even big players like Microsoft with huge resources have hard time in competing there.

How To Save Your Phone From Water Damage

Tuesday, December 4th, 2012

Washing machines, toilets, baths, cups of tea, beer pint, the rainy weather… these are a few of our favourite ways to ruin a smart phone. How to save a wet mobile phone – and what not to do and How to Save a Wet Cell Phone articles tells that usually you don’t need to panic — just follow some steps and you’ll have a good chance of breathing life back into your drowned smart phone.

Firstly, retrieve your handset from the drink straight away. Be quick. A prolonged plunge will increase the risk of damage. The best thing to do is to turn off the power and immediately pull out the battery (if possible). Dry off everything with a towel, including the exterior of your handset, being careful not to let any water drain into openings on the phone. Remove accessories, SIM card and memory card.

Desiccant materials, such as rice or silica gel packs, have hygroscopic properties that can attract and absorb moisture. Place your phone in an airtight container and completely cover it with your choice of desiccant for 24-48 hours. When you’re confident it’s dried out, replace the battery and try switching it on. Very often they will work well when they are dry, but sometimes they won’t work. Good luck!

How to Save a Wet Cell Phone article mentions that you can try to suck the liquid out of the inner parts of the phone using a vacuum cleaner. You can try to remove all residual moisture from extremely short water exposure by drawing it away with a vacuum cleaner held over the affected areas for up to 20 minutes. The same article also says that contrary to common advice, it is not recommended that you use a hair dryer (not even on the “cold” mode) to dry out the phone. Using a hair dryer may force moisture further into the small components, deep inside the phone, as the air blows inward.

While dismantling your phone completely would help it to dry out more effectively, doing so will void your warranty. It usually requires specialist tools and may jeopardise your phone if you’re not careful, so I don’t recommend it, unless you are a specialist in repairing small gadgets. If you go this route How To Repair A Water Damaged Cell Phone article recommends to try to clean the circuit board with spirit (99% isopropyl alcohol) using a brush. This prevents corrosion on the PCB.

Minute Hacks: How To Save Your Phone From Water Damage video has the instructions in easy to follow video format:

Now you know the first aid for a wet smart phone. Next time you smart phone gets wet you know what to do. Let them dry out before trying to use them.

How to Fix Water Damaged Phones Featured gives some more tips what to try if first-aid did not help. When all else fails, get a new phone. You should try to get into the habit of backing up your phone on a monthly basis, so you don’t loose too much of your important information that is stored on your smart phone.

SMS text message turns 20 years old in Dec. 3

Monday, December 3rd, 2012

In the fast moving world of technology, there are perhaps few things that have proved as resistant to change as the simple SMS text message. Happy (Early) Bday! :) SMS Txt Msgs Turn 20 article tells that on Dec. 3 is the 20th anniversary of the sending of the first SMS text message. The first text message was sent on 3 December 1992, when the 22-year-old British engineer Neil Papworth used his computer to wish a “Merry Christmas” to Richard Jarvis, of Vodafone, on his Orbitel 901 mobile phone. I have heard (from some people who have been involved in development of SMS) that developers first thought that sending SMS from mobile phone would not be even something that users would like to have (it would be too hard for an average user to get used to write the message with numeric keyboard).

Next year (1993) Nokia’s mobile phone also allowed sending SMS messages. Several news have told that the phone used to send first SMS was Nokia’s first mobile phone made in 1993, but that’s not true because Nokia had made many mobile phone models years before that time, even several GSM mobile phones.

Commercial services soon followed, and though they started life as a free service – because operators hadn’t figured out how to charge for them. When they figured out the pricing text messaging has been very profitable business for mobile phone operators and making them lots of money. And this very profitable business that has been growing and growing for long time, but now the growth seems to be stopping.

Text messaging turns 20 – but is it past its peak? Change is in the air: text messaging is being replaced by applications across the world (like Skype, WatsApp, BlackBerry Messenger and Facebook-like smartphone applications). The telecom operator net SMS sales declined for the first time in USA. There are signs that SMS use is declining in a number of countries, including Spain, the Netherlands, Finland, Hong Kong and Australia.

Ten… technology fails

Sunday, December 2nd, 2012

Ten… technology FAILS article shows you examples of tech that might have at the time revolutionized your life but you have now completely forgotten. Many products and entire categories of goods and services have been hailed as the Next Big Thing only to disappear with nothing but a handful of miserable early adopters to show they were ever there.

Some examples:

Push Technology: By the end of the 1990s, PointCast and many of its rivals were gone, though the notion of getting information updates, albeit through by pulling them over, was carried on by the developers of the RSS feed.

Was the Personal Digital Assistant a fail? It’s true that what we now call a smartphone is heir to the PDA and, if you count all the organisers that the likes of Palm, Sony and others sold in the late 1990s and early 2000s, the PDA, as a category, proved incredibly successful. But what about the PDA as originally conceived? Apple’s Newton was a flop and was out-paced by the more basic, cheaper Palm Pilot, which was never tried to be anything more than a digital diary and contacts list.

Even by the late 1990s, pundits were already predicting the death of the PC: the new Millennium would herald the ‘post-PC era’, they said. The idea was that most users would access the internet cheaply and easily through set-top boxes and TVs rather than pricey desktop or laptop computers. Attempts to build these so-called ‘information appliances’ invariably offered a sub-standard – as defined by the personal computer – experience. Instead, punters adopted the ever-cheaper PCs. We have had to wait another ten years for products that looked like they might supplant the traditional computer.


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