E-Ink VS LCD Displays: How they work; display technologies compared

We find out how e-ink screens (used by the Kindle) compare with LCD screens (used by iPad and most smartphones).

The Amazon Kindle e-book reader differs from most tablet devices in that it uses an e-ink screen as opposed to a colour LCD screen. Fundamentally, e-ink is a very different technology from LCD. In this article, we look at how e-ink and LCD display technologies work and compare the two technologies.

How do electronic ink (e-ink) displays work?

E-ink (electronic ink) displays produce images and reflect light in the same way normal paper does.

Paper reflects light from the Sun (and from artificial light sources such as light bulbs). Because paper reflects light of all wavelengths, it normally appears white (see left diagram below). In order to form an image on paper, we need to add a layer of ink in the relevant places. This layer of ink is non-reflective (this region appears black as black is the absence of light; see right diagram below). By selectively adding ink to a piece of paper, we can form the desired image.

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3D Mobile Phones: Revolution or Gimmick? How They Work; 3D Phones Reviewed

Mobile phones with 3D displays finally reach the UK this month. In this article, we find out how they work and whether handsets such as the LG Optimus 3D and HTC Evo 3D will really be flying off the shelf.

The UK’s first 3D mobile phones begin to hit the shelves this month. 3D phones such as the LG Optimus 3D and HTC EVO 3D promise to allow you to watch 3D videos on your handset, to play 3D games and to record videos in 3D. But does 3D really add an extra dimension to the mobile experience? Will they revolutionise the mobile industry or will it be another short-term fad? In this article, we find out how 3D mobile phones work and discuss the outlook for them.

How does the human eye perceive 3D?

Like many other animals, humans have two eyes so that we can see in 3D. As each of our eye are in slightly different places, each eye will observe objects from a slightly different angle. The brain will then piece together the information received from each eye to calculate the distance to the object (hence giving depth perception).

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Ken’s Tech Tips Worm: Tracking the popularity of the UK’s mobile operators over the last 9 months

Ken’s Tech Tips has been tracking the popularity of the UK’s major mobile operators over the last 9 months. In this article, we reveal how they all fare.

During the UK Election Debates of 2010, we were glued to our screens and the sentiment-tracking application known as “The Worm”. The Worm showed a real-time, second-by-second overview of the “sentiment” expressed by viewers to each politician speaking in the debate. As the party leaders made arguments which were popular with viewers, the worm moved up the screen. Meanwhile, unpopular statements which didn’t go well with the public (such as personal attacks) moved the worm down the screen.

In this article, we unveil the Ken’s Tech Tips Worm – our version of “The Worm” but for mobile operators and their respective product offerings. By collating thousands of responses about how British consumers are switching between mobile networks (assuming they vote with their feet and gravitate towards the networks they like), we’re able to track the popularity of each mobile network over time and in response to different product offerings.

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Ken’s Tech Tips Index: Three is UK’s best network according to poll of 7,200 consumers

Our latest study looks at the switching intention of 7,200 consumers between February and April. Three edge out Tesco Mobile to take home the title of best performing network.

What is the Ken’s Tech Tips index?

The Ken’s Tech Tips Index is our regular study looking into how well each mobile phone network is performing in terms of attracting new customers and retaining existing ones. We believe that consumers vote with their feet and that by looking at how well networks can attract and retain customers, we can determine how good a network really is.

We polled 7,205 consumers through our PAC Code Finder tool on their intention of switching network. From the responses, we determine how rapidly a network is gaining new customers and losing existing ones. The Ken’s Tech Tips “index score” is “the number of customers who join a given network for every 100 customers who leave that network”.

If a network has a high score in the Ken’s Tech Tips Index, it means they are gaining customers a lot faster than they lose them. This is perhaps a good indication that the products they provide are better value for consumers (or alternatively, it could just mean they are doing a great job with marketing their products).

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Interview: Talking data usage and how to cut your phone bill with Nick Wright from billmonitor

The team at billmonitor have analysed 28,000 mobile phone bills to find out how much data we’re really using and how consumers can cut their phone bills.

billmonitor calls itself the UK’s first “mobile bill analysis engine”. Unlike traditional price comparison services (which I’ve blogged about before), billmonitor takes the more scientific approach of analysing your online phone bills to work out how you use your phone rather than simply asking you to provide figures. That approach means they’ve got real numerical data on your phone usage: the calls you make, the type of calls (landline, mobile or international) and how much data you use. Using these bills, the service then makes a recommendation on the best value phone tariff as well as any add-ons you might need.

The guys at billmonitor have recently carried out some fascinating research on how people use their phones and how much people are paying for their mobile phone service. In this article, I sat down with Nick Wright from billmonitor to discuss:

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Ken’s Tech Tips Index: Survey of 8,000 shows Tesco, Three & T-Mobile are best networks

Our latest study looks at the performance of each network in the aftermath of Christmas. Tesco Mobile again takes the title of best performing network with Three and T-Mobile both gaining ground.

What is the Ken’s Tech Tips index?

The Ken’s Tech Tips Index is our regular study looking into how well each mobile phone network is performing in terms of attracting new customers and retaining existing ones. We believe that consumers vote with their feet. We believe that by looking at how well networks can attract and retain customers, we can determine how good a network really is.

We polled 8,199 people through our PAC Code Finder tool on their intention of switching network. From the responses, we determine how rapidly a network is gaining new customers and losing existing ones. The Ken’s Tech Tips “index score” is “the number of customers who join a given network for every 100 customers who leave that network”.

If a network has a high score in the Ken’s Tech Tips Index, it means they are gaining customers a lot faster than they lose them. This is perhaps a good indication that the products they provide are better value for consumers (or alternatively, it could just mean they are doing a great job with publicity or sales).

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Data Visualisation: How are people switching between networks?

Ken’s Tech Tips graphically visualises how UK punters have been switching network and finds out who the winners and the losers are.

In this study, Ken’s Tech Tips polled more than 6,000 people over a 2 month period to find out how they’re switching mobile network. We’ve visualised this data to look at the net movement of customers from network to network. Our graphs show which networks are losing customers, which networks are gaining customers and where the customers are coming from.

Background Information

For this visualisation, we polled 6,145 people through our PAC Code Finder tool between October 20th 2010 and December 19th 2010 (the same data set used in our “Ken’s Tech Tips Index” study of network performance).

Respondents were asked to “select your current network provider and the network that you wish to move to” from a drop down menu of 9 mobile networks: 3 (Three), O2, Orange, T-Mobile, Vodafone, ASDA Mobile, Giffgaff, Tesco Mobile and Virgin Mobile. These 9 networks form our study.

From the 9 networks, we took each pair of networks in turn. We looked at the “net movement” of customers between each pair of networks and have visualised it in the graph below. For example, if 200 customers switch from Network A to Network B and 100 customers switch from Network B to Network A, the “net movement” of customers would be 100 customers from Network A to Network B. This would be represented by a line pointing from Network A to Network B in our visualisation.

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Ken’s Tech Tips Index: How did the networks do in the run up to Christmas?

In our latest study into the performance of each network in the run-up to Christmas, Tesco Mobile takes the title of the best performing network followed by Three and T-Mobile.

What is the Ken’s Tech Tips index?

The Ken’s Tech Tips Index is our regular study looking into how well each mobile phone network is performing in terms of attracting new customers and retaining existing ones. We polled 6,145 people through our PAC Code Finder tool on their intention of switching network. From the answers, we determine how rapidly a network is gaining new customers and losing existing ones. The Ken’s Tech Tips “index score” is “the number of customers who join a given network for every 100 customers who leave that network”.

If a network has a high score in the Ken’s Tech Tips Index, it means they are gaining customers a lot faster than they lose them. This is perhaps a good indication that the products they provide are better value for consumers (or alternatively, it could just mean they are doing a great job with publicity or sales).

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HTC Desire HD Android Smartphone: Reviewed and Compared to HTC Desire

HTC’s new Desire HD smartphone aims to build on the success of the original HTC Desire. We review and compare the two phones.

After the success of the original HTC Desire, HTC have been trying to take it to the next level with their new flagship HTC Desire HD. Sporting a larger screen, a higher resolution camera and various software enhancements, does the Desire HD do enough to improve on the original phone or is it simply a small incremental upgrade? In this article, we review the Desire HD and take a look at some of the key differences between the Desire HD and the original Desire.

What’s the overall verdict on the Desire HD?

We love the HTC Desire HD for much the same reasons that we loved the HTC Desire. Both phones are well designed, are comfortable to hold and have a good build quality.

The software on the phone is fantastic – the Desire HD has Android 2.2 (Froyo) including free turn-by-turn GPS navigation and access to over 100,000 applications through the Android Market. The Desire HD’s large 4.3-inch screen makes it particularly well suited for the Google GPS navigation service which also features information about current traffic conditions.

On top of the stock Android, HTC have also added their proprietary “Sense UI” overlay which adds integration with social networks such as Facebook, provides the iconic home screen and links with the HTCSense.com website. The Desire HD, like the original Desire, is an absolute joy to use.

Our only criticism is the battery life. Providing the Desire HD is charged each night, our phone would usually make it through the day OK. However, sometimes it got a little too close to comfort… especially when we would use the phone in a low signal area or make heavy use of the multimedia features. Bizarrely, even though one of the main complaints about the Desire was battery life, the Desire HD has a smaller battery capacity (1230 mAh) than the original Desire (1400 mAh). HTC justify this by claiming the Desire HD’s hardware is more energy efficient – but we wonder why HTC couldn’t have used this to extend the battery life rather than as an excuse to reduce the battery capacity.

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Reviewed: Samsung Galaxy Tab Android Tablet – How does it fare against iPad?

The Samsung Galaxy Tab is a 7-inch Android tablet which has been dubbed the “first true competitor to the iPad”. Find out how the Tab fares in our detailed review here.

It might be a bit of an understatement to say that the technology enthusiasts across the world have been eagerly awaiting the launch of the Samsung Galaxy Tab and the chance to pit it against Apple’s iPad. Being the first Google-approved Android tablet on the market and the first mass-market 7-inch tablet device, the Tab gives us a taste of what might lies ahead in the tablet market and whether Android can take on the mighty Apple.

In this article, we’ve got a comprehensive review of the Galaxy Tab. We’ll look at the hardware, the practicalities of using it as a day-to-day device and phone and review some of the built-in applications. Along the way, we’ll look at the debate about the optimum size for a phone/tablet and find out whether the Tab works as a mass-market consumer device.

Our review is based on a final consumer release version of the Galaxy Tab provided to us by Samsung.

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