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A mobile user. Wikimedia Commons

Many people like to use their phones, tablets or other gadgets at night before they go to sleep.

However, the light from mobile devices can interfere with sleep. But not all light carries the same risk.


Recent studies have shown that within the light spectrum, blue light can have the worst effect on sleep.

A study in the UK showed that blue light actually can keep sleepy people awake. Tired drivers who were exposed to blue light became as alert as those who drank two cups of coffee.

Blue light filters have been developed for mobile devices to help with sleep issues. Apps are available for Android devices that filter blue light on screens. Updates to the iPhone, iPad and Amazon Fire tablet have added blue light filters.

Twilight App – Android Devices

Twilight is a free app that filters blue light on Android device screens. It can be set to turn on by itself. Or users can turn it on and off when they want.In the app settings, you can change the intensity of the filter, the color and the time the filter turns on and off.

Twilight works across all apps, though some apps may not work fully when Twilight’s filter is on.

There is a YouTube video that explains Twilight use.

Watch this:

Twilight is available free for Android devices in the Google Play store.

Night Shift – iPhone and iPad

Apple updated its operating system for iPhone and iPad earlier this year. Included in the update is Night Shift, a blue light filter.

This feature is available on newer iPhones and iPads, including the iPhone 5s and later, and the iPad Air and later.

Night Shift can be set to turn itself on every night or for the user to turn it on and off as wanted.

To turn on Night Shift automatically every night, go to Settings, then Display, then Brightness and then Night Shift.On the Night Shift settings, move the switch to schedule Night Shift. It can be set for Night Shift to go on and off at specific times, or at sunset and sunrise.

In Settings you can also adjust the color of the filter.

Night Shift can also be turned on and off in Control Center on the iPhone and iPad. Open Control Center by swiping up from the bottom of the screen.

The sun and moon icon there identifies Night Shift. Tap it to turn Night Shift on or off at any time.

Related article: India needs to up its game in Science and technology

Blue Shade – Amazon Fire Tablets

In an update to Fire tablets at the end of last year, Amazon introduced Blue Shade to filter blue light on screens. Blue Shade is available on more recent Fire tablets.

To turn on Blue Shade on a Fire tablet, swipe down from the top of the screen and tap Blue Shade. To adjust the color, go to Settings, then Display and, finally, Blue Shade. (VOA)


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Traditional players are very strong in the consumer laptop market.

By Md Waquar Haider

When popular smartphone brands like Xiaomi and realme entered the laptop market in India last year, they were expected to shake the existing giants, specifically under the Rs 50,000 category. However, chip shortage and supply crunch have somewhat dented their plans to make a significant mark to date. According to industry experts, the issue with smartphone makers entering the laptop category is two-fold. The first one is a massive supply crunch in the laptop component market and only big brands are able to get volume and supplies.

The other factor is that the traditional players are very strong in the consumer laptop market. Top 3 players control more than 70 per cent of the market and strong portfolio, distribution, and channel reach as well as brand marketing has helped them massively. "New brands can surely make a dent in the consumer laptop market but are challenged by supply issues right now. Watch out for them in 2022 as and when supply situation eases up," Navkendar Singh, Research Director, Client Devices & IPDS, IDC India told IANS.

Dominated by HP Inc, Lenovo and Dell, the traditional PC market (inclusive of desktops, notebooks, and workstations) in India continued to be robust as the shipments grew by 50.5 per cent year-over-year (YoY) in the second quarter (Q2), according to IDC. Notebook PCs continue to hold more than three-fourth share in the overall category and grew 49.9 per cent YoY in 2Q21, reporting a fourth consecutive quarter with over 2 million units. Desktops also indicated a recovery as shipments grew 52.3 per cent YoY after recording the lowest shipments of the decade in 2Q20.

According to Prabhu Ram, Head, Industry Intelligence Group, CMR, driven by the pandemic and the associated accelerated pivot to remote work, learn and unwind culture, PCs have been witnessing heightened demand. "Despite the current supply chain constraints, PCs are here to stay in the new never normal. In the run-up to the festive season, established PC market leaders will continue to leverage their brand salience and gain market share," Ram told IANS.

a computer chip close up According to industry experts, the issue with smartphone makers entering the laptop category is two-fold. | Photo by Manuel on Unsplash

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