Today's world have become so much hard user of mobile phones that they run out of juice. To tackle this problem power banks were developed and we have seen surge of power bank shipments in 2019. While power banks are common there are few wireless power banks from reputed manufacturers.

The Samsung wireless power bank is one of its kind that supports fast charging both wireless and wired. It has a capacity of 10000 mAh which is quite impressive.The power bank supports standard Qi charging for wireless charging, Samsung's own Fast Charge protocol with the maximum peak output of 7.5 watts. Samsung could have gone for much better 10 Watt output for wireless charging.


For wired charging, the power bank can output at 5V/2A, 9V/1.67A and 12V/1.25A. The maximum output is 15 watts which is quite good for Samsung phones because majority of them support max 15W input. The power bank supports Qualcomm Quick Charge 2.0 and Samsung Fast Charge protocols.

We did quick tests first with the wired charging on galaxy S10 plus. The device has 4000mah battery and managed to charge from 0 -100 in 90 minutes, this is same amount of time as taken by using 15 Watt charger.

For wireless charging tests, we again used S10 plus which supports Samsung wireless charging 2 technology, the Samsung's Wireless Fast Charge standard. It took 3 hrs to fully charge the phone. Also this power bank can wirelessly charge phone only once. Because half the energy goes into air due to poor energy conversion. It we use wire then we can top-up S10 Plus twice.

The design of power bank is excellent and feels premium in hands, it's made out of an aluminum shell but the front has a rubberized plastic cover for the wireless charging feature to work. The power bank can be charged using USB-C port and has a USB-A port for outputting power. There is also a button which shows you remaining power by blinking the four white LED and another to denote if the power bank is on or off. The button also starts wireless charging but it stops automatically if no device is kept on the power bank.

The power bank is capable of charging two devices simultaneously, one wired and one wirelessly. This will reduce the rate of charging for both modes but if you have, say, a Galaxy S10 and a Galaxy Watch then you can charge both together if for some reason you find them both out of charge at the same time.

The Samsung Wireless Power bank is priced at $59.99 / INR 3699, which is expensive for a 10000mAh power bank with 15W wired charging. However, the wireless charging adds an extra dimension of practicality to the device, which is lacking on most other power banks.

However, the wireless charging is too slow to be used with non-Samsung products but if you have a recent Samsung Galaxy S-series or Note-series smartphone or any one of their smartwatches then you can expect to get good charging speeds even in wireless mode. In that case, the Samsung Wireless Powerbank is worth the extra premium.

MicroLED was just a latest tech buzzword a few years ago, but today it stands as a major thing in TV technology. Figuratively MicroLED is the technology behind the world’s largest displays currently available.

While the sheer enormity of the displays that MicroLED makes possible, it becomes clear this technology isn’t about making just behemoth TVs. Lets discuss the nitty-gritty of MicroLED and analyze why this will become the technology of coming decades.

On paper, MicroLED offer excellent color, perfect blacks,and near-perfect off-angle viewing. To understand why MicroLED is such a big deal, lets take a quick look on how how modern-day TVs work:

The LED TVs are LCD panels with a bunch of LED lights behind them. This is because the LCD screens can’t make their own light, so it becomes necessary to provide backlight in order to get a picture.

The OLED TVs are the biggest selling TV's right now and they also get such great reviews, this is due to the fact that OLED panels are an “emissive display” technology. This means that Each pixel in an OLED screen makes its own light. The biggest advantages of OLEDs are perfect black levels, excellent color, and near-perfect off-angle viewing. In a nutshell, OLED is excellent at everything while LCD/LED TVs are not.

Each tech comes with some downsides, so do OLED panels? The panels are made with organic compounds, and they are expensive to make, somewhat limited in brightness, and biggest flaw is burn-in under the most excruciating viewing scenarios.

Additionally they are very difficult to manufacture in large sizes. 
The benefits of MicroLED:
Just like OLED, MicroLED are also an emissive display, but they don't rely on organic compounds to make light. On paper, MicroLED displays should offer perfect blacks, excellent color, and near-perfect off-angle viewing, just like OLED. In addition to this they should also be even brighter, very slim, immune to burn-in, and, in the long run, less expensive to make than OLED.

Since small MicroLED panels can be combined, therefore the screen can be manufactured of any size. Also MicroLED TVs are based on a modular system, hence users can  customize the size of their screen. Therefore users can enhance the size of  display in near future.

Better than OLED?
Indeed MicroLED displays are stunning, and have incredible color saturation. Also they are much more brighter than the displays of this size.

Well if you are thinking that whether MicroLED are step-up from OLED TV, it will depend on lot of factors, basically the size. Currently MicroLED displays much costlier and therefore if you are considering to get the whole wall as a display, then OLED is the better option. Additionally MicroLED are in development phase and with the advancements in technology we can see MiroLed TV's surpassing OLED TV's.

Much awaited electric pickup truck was finally unveiled by Elon Musk at its Design Studio in Hawthorne, California. There were numerous renders but none of them came even a little close to the actual product. Tesla got over 250K pre-orders of the truck on just 5 days and the count is growing. But why is there so much hype of this electric pickup truck ad why is it such a big deal.

Design:
Tesla could have gone for a simple boring design just like other trucks in the market. But in this competitive market bringing just another truck with fancy specs won't fetch enough customers. So Tesla needed to design something jaw dropping. When Tesla cyber-truck entered stage, every one the the studio was jaw dropping, nobody could believe that this thing was actually a truck. Tesla brought futuristic design to the truck, making it unique. Even though there has been lot of memes of cybertruck but this only acts as free publicity for the truck.


Strength:
The truck is made up of Stainless steel which Tesla says is the same one used in upcoming Space X Starship. Steel is ultra-hard 30X cold-rolled and as per Tesla it is bulletproof to a 9mm handgun. Also they showcased  “shatterproof” windows but the window shattered during the event.


Power:
There are three variants of the truck and the maxed one has a massive towing capacity of 14,000 pounds, leaving behind of its gasoline rivals, like the Ford F-150. This is also the best mileage truck by Tesla, promising 500 miles for the top-spec Tri-Motor AWD model. Top model can also get you to 0-60mph in just 2.9 seconds faster than Porsche. The mid-range model will have dual-motor all-wheel drive and 300 miles of range. While the cheapest variant will offer rear-wheel drive from one electric motor, and have a maximum driving range of 250 miles.


Features:
Truck has a 16-inch ground clearance, a departure angle of 28-degree and , a  approach angle of 35-degree . The truck will have autopilot technology as Standard, When adventure time is over, owners will be able to turn on the company’s Autopilot suite of semi-autonomous technology (like adaptive cruise control and lane-keeping assist) to help guide them home. Full self-driving is an option, too, though whether it will be available when the truck enters production is up in the air.


Verdict:
Cybertruck seems a perfect bang for buck product and not to forget the impressive new design that  is just eye-catching. Cybertruck has started a new design and durability trend which will be followed by trucks in coming generations.

Wi-Fi 6 is the next generation wifi technology that is much faster than previous Wi-Fi 802.11 ac. Its main focus is to provide the faster inter-connectivity in congested areas, therefore it will reshape the way router handles the growing demand of users.

Faster internet is the basic requirement of IOT because with this the inter-connectivity of devices will increase tremendously. It is predicted that number of inter-connective devices will double in next 5 years. Thus there was a need of new Wi-Fi technology.

Previous Wi-Fi names were quite confusing, but now it has been sorted by using the simple naming convention. Here is the quick summary of previous Wi-Fi technology with names:
• Wi-Fi 4 is 802.11n, released in 2009.
• Wi-Fi 5 is 802.11ac, released in 2014.
• Wi-Fi 6 is the new version, also known as 802.11ax.



How Fast is Wi-Fi 6:
Well this question will lead to debate among people. The initial industrial trails have reveled that Wi-Fi 6 will offer speeds that are 30% faster than previous Wi-Fi 5. There will be maximum theoretical maximum transfer speeds up around 10 Gbps. The actual real life speeds may differ depending upon the number of  devices connected and most importantly the ISP you are using and type of connection you have. If you are suing fiber connection then you can enjoy the true speed.

When will Wi-Fi 6 be available:
Wi-Fi 6 is already available in flagship smartphones and Galaxy S10 was the first device to use one. Slowly the routers are being available which are wi-fi 6 certified and the market is adapting towards new standards. To enjoy the benefit of Wi-Fi 6, you will need both Wi-Fi 6 router and Wi-Fi 6 enabled device.

You'll need both a Wi-Fi 6 router and Wi-Fi 6 devices like those in order to reap the full benefits of 802.11ax, but if you go ahead and get that fancy new router, your older devices will still work like normal. The rub is that they won't be much faster, if at all -- Wi-Fi 6 supports previous-gen 802.11 devices, but it can't do much to speed them up.

Who made Wifi 6:
Wi-Fi 6 was developed by the world's largest association of technical professionals working in the Institute of Electrical and Electronics Engineers (IEEE). The main focus of professionals working there is to keep WiFi technology updated with the industry standards

How Wi-Fi 6 Battles Congestion:
Wi-Fi 6 divides a wireless channel into a large number of subchannels, which previous technology was unable to do. Each of these sub-channels carry data intended for a different device. All this is done through technology called Orthogonal Frequency Division Multiple Access. Additionally The Wi-Fi access points can talk to more devices at once.

There is also improved version of  MIMO—Multiple In/Multiple Out. This involves multiple antennas, which let the access point talk to multiple devices at once. in Wi-Fi 6, wireless access points near each other can be configured to have different Basic Service Set (BSS) “colors.” The number between 0 and 7 represent color. When device is checking whether the channel is all clear and listens in, it may notice a transmission with a weak signal and of different “color.” It then ignores this signal and transmit anyway without waiting. Technically this will improve performance in congested areas, and is also called “spatial frequency re-use.

Wifi 6 bring lot of improvements under the hood, the increased speed and many more. It will be worth observing the absorption rate of it and how fast manufacturers start implementing it in their devices.

The previous blog highlighted the technology and working of OLED and QLED televisions. If you have not checked that out click on this link to know about it.


There are many differences between both the technologies, before you make any decision to shell out your hard earned money, we will be comparing both the technologies based on Brightness, contrast, viewing angles, response time and lifespan.

Black levels and contrast:
The difference between the brightest and the darkest part of an image is known as contrast. So if your TV can make true dark blacks then it does not have to work hard on making brighter parks extra bright to achieve good levels of contrast. Due to this reason, OLED reigns as the undisputed champion because of its ability to go completely black when it needs to.

Whereas QLED TVs are forced to dim their LED backlight and block the light, which is very hard to do perfectly. Due to this reason the issue of “light bleed” (as the light spills onto what’s supposed to be a black section of the screen.) is most common in these type of TV’s.

Brightness:
Well in this area the QLED TVs have a considerable advantage because they use separate backlightthat can be made incredibly bright. Due to this reason you can enjoy a picture quality so bright that can be seen clearly in even most brightly lit rooms.
OLED panels doesnn’t even come close in the matter of brightness. This is due to the inability of light-emitting individual pixels to produce enough amount of light. So in brightly lit room you can face a problem with the brightness. Also HDR experience can be a bitter in OLED TV’s.

Color Accuracy:
There was a time when OLED blew away the competition in terms of picture quality. But with the use of quantum dots in QLED TVs they have stepped forward in terms of color accuracy, wider range of saturated colors at extreme brightness levels are an advantage. Well we would say both the technologies deliver same amount of color accuracy until we get a solid evidence regarding mind-blowing color accuracy of QLED panels.

Response time:
The amount of time taken by individual pixel to switch from one state to another is known response time. With the increase in response time the images become more crisper, especially during fast-action scenes OLED have dominated the market with response time of just 0.1 millisecond whereas the QLED have response time of   2-8 milliseconds.

Viewing angle:
This has been a limitation of  all LED TV’s and  this has been carried forward to QLED as well. Manufacturers have made best efforts to enhance viewing angles but still the difference is noticeable.
OLED screens were popular due to their incredible viewing angles, these can be viewed with no luminescence degradation at drastic viewing angles — up to 84 degrees.

Screen burn-in:
Long story short screen burn in refers to a problem when certain portion of screen appears dim than rest of the display. OLED TV’s are susceptible of screen burn in issue and there have been numerous reports for the same but you have to be really unlucky and abuse the TV to get screen burn in problem. On the other hand QLED TV’s are not susceptible of this issue.

Power consumption:
OLED panels are extremely thin and require no back-light thus they are much power efficient than its rivals.

For now OLED TV's have more advantages and are leading the television industry by storm, but Samsung see lot of potential in QLED and are ready to launch TV's with micro LED technology. Well this technology is new and need some time to mature, and who knows one day QLED surpass OLED technology that use of OLED will fade away.