LightBlog

mercredi 8 juillet 2015

How to Flash a Custom ROM – Android Basics 101

customromxda

Here at XDA, we love customizing our phones. One of the best ways to get great options and customizability for your device is to flash a custom ROM. These modified system images are tweaked to get optimal performance, bring us great themes and icons as well as very handy tools by the talented members of the XDA Forums.

Flashing a Custom ROM isn’t difficult, but it also isn’t always straight forward. In this video, XDA TV Producer TK gives a generic overview of the process. He explains the reasons for the many steps you will find in flashing a Custom ROM. While this video won’t give you the exact steps for your device, the foundation taught in this video will help you understand what you are doing.

Be sure to check out other great XDA TV Videos:



from xda-developers http://ift.tt/1HMjVew
via IFTTT

mardi 7 juillet 2015

T-Mobile Galaxy S6 Battery Woes

20150707_142014[1]

I’ve been using a T-Mobile Galaxy S6 since the device launched with T-mobile’s service. However, over this past holiday weekend I knew I would be in an area without reliable T-Mobile service. So, I opened up T-Mobile’s default “Device Unlock” app , pressed unlock, and placed my AT&T SIM card in the device. Everything seemed to be working fine: strong signal, great LTE, good voice calls – until day 3.

Screenshot_2015-07-07-13-18-18[1]

On Sunday, my Galaxy S6 felt very hot to the touch and the battery was wasting away far faster than normal. After checking out my CPU’s performance (with CPU Spy Reloaded) it was obvious something was preventing the phone from entering a deep sleep state. Being that I’m not rooted, I had to resort to Wakelock Detector to have a look at what is keeping my S6 from sleeping.

Screenshot_2015-07-06-20-29-23Screenshot_2015-07-07-01-21-18

 

It turns out the process “com.tmobile.pr.adapt” was causing over 2 hours worth of wakelocks. This process is a part of the “T-Mobile My Account” application. Some searching led me to a an XDA forum thread regarding this exact issue with 5.1.1 and unlocked T-Mobile Galaxy S6 phones. Turning off Wifi seems to alleviate the problem a bit, but that is not really a viable long term solution. Additionally, the Galaxy S6 will not allow you to disable the T-Mobile account application. Users in the XDA thread found that disabling data usage for the offending app seems to help with the drain. The best solution may be to root and freeze the offending account management app.

Screenshot_2015-07-07-01-24-53wld

Now that I’m back home, I put the T-Mobile SIM back in and everything seems to be OK once again. The phone once again spends most of its time in Deep Sleep and not feeling like it will spontaneously combust. It is certainly interesting, however, to see how poorly the device performs with sim cards from other carriers. We will continue to look into this and provide any additional info as soon as we have some.

Screenshot_2015-07-07-13-15-05

Have you experienced similar issues when using an unlocked Galaxy S6? Let us know in the commnts below.

 



from xda-developers http://ift.tt/1gmw5OV
via IFTTT

Earthquake Early Warning in Your Pocket

shakealert_top

Probably all of us reading this have a smartphone in our pocket. For many of us, the smartphone has become our primary method of reading and writing e-mails, messaging, and browsing the web. Though proclamations that “smartphones have replaced the personal computer” typically fall on deaf ears, the statements aren’t without merit. Indeed, smartphones have “replaced“—or more accurately, “displaced“—PC’s in several areas that they have traditionally been dominant. But how many of you look into your pocket, or on your desk, and see a scientific instrument? Well, that’s exactly what some scientists have started to do.

Though there is little fanfare outside the realm of science meetings and technical workshops, scientists around the world are now beginning to embrace the ubiquity of smartphones. And nowhere is the excitement greater than in the Earth Science community.

What is earthquake early warning?

Earthquakes take time to travel from point A to point B (the damaging waves typically travel at less than 4 km/s). Earthquake early warning takes advantage of the fact that the speed of telecommunications (i.e., the speed of light) is much faster than the speed of an earthquake. The idea is that, if you have a big population center at point B (e.g., a city), you can install a bunch of sensors around point A; as soon as the earthquake occurs, your sensors can detect and alert the people at point B before the shaking arrives.

Let’s use some real geography for a real-world example. Let’s imagine you’re sitting in your office in downtown Los Angeles, and suddenly the San Andreas fault ruptures—next Big One has just occurred, centered underneath Palm Springs, to your east (Click here for a map, for those unfamiliar with California geography). Palm Springs lies about 160 km from downtown L.A., so that means that it’s going to take somewhere in the range of 40 seconds for most of the damaging seismic waves to reach you. If you have sensors located right at the epicenter of the earthquake, in Palm Springs, those sensors will detect the earthquake immediately and relay that information to alarms in L.A. Even if it takes 10 seconds for computers to analyze the data from the sensors and send it to the alarms, you’ll still have 30 seconds of advanced warning before the bad shaking begins.

Sounds like futuristic technology? It’s not. Japan has had various kinds of earthquake early warning systems in place for decades. They started with sensors installed on their rail networks which could automatically send signals to tell trains to apply the brakes in the case of a large earthquake. That system has since evolved into a nationwide network, and alerts are sent out not only to trains, but to department stores, buildings, and factories. Since 2007, people may now receive cell phone alerts, giving them precious seconds (sometimes up to a minute) of forewarning to take cover. There are even programs for your computer, such as The Last 10-Second, that will raise an early warning and show you the progress of seismic waves in real-time.

So what, I’ll get an extra few seconds to get under a table. Big deal.

Earthquake early warning (EEW) may not seem that amazing, but it, in fact, saves a lot of money and lives. Imagine you’re riding an elevator when a catastrophic earthquake occurs. With EEW, that elevator may automatically stop at the nearest floor and let you out—before the shaking begins. Imagine the delicate work that takes place at a machining or electronics factory. If the ground suddenly starts shaking, the product—and potentially millions of dollars with it—could be ruined. But with EEW, there are a precious few seconds to safely abort the process and wait for the earthquake to subside. Imagine how thankful a surgeon in the middle of a surgery would be given an early warning before an earthquake hit. Or how about gas stoves, or even gas pipelines, that automatically shut off before the shaking begins?

Well, if you live in Japan, you don’t have to imagine, because earthquake early warning is a reality, and it’s getting better every year. But for the rest of us, it’s coming—first to the US West Coast, and then, potentially, the world.

So where do smartphones come in?

Well, seismometers—the instruments that geophysicists use to measure ground motion—are expensive. Like, really expensive; as much as a car. So it’s not really practical to place tens of thousands of seismometers all over the world in anticipation of earthquakes for which no one can accurately predict when the next reoccurrence will be. And good luck procuring a few million dollar annual budget to purchase and maintain a network of seismometers for just a small early warning system. That’s where smartphones come in—they’re cheap, they’re ubiquitous, and they nearly all have accelerometers on board.

Seismometers are basically really sensitive accelerometers. Nearly all of us have accelerometers built into our phones. What if, instead of building out a network of hundreds of seismometers in every area prone to earthquakes (and then some in areas we don’t expect—because unexpected earthquakes do happen), we could utilize the existing “seismometers” in our pockets? Well, that’s a question that scientists around the world, including those at the US Geological Survey, are increasingly talking about.

While smartphone accelerometers aren’t even close to the quality and sensitivity of a real seismometer, they just might be good enough so that, in aggregate, they can be used for real scientific utility. Many of us set our smartphones on our desks or tables while they’re not in use. During that time, they’re stationary. If they were linked into an earthquake early warning system, they could report if they experienced sudden movement. While any individual phone would not be a reliable witness to an earthquake—maybe the sudden movement was caused by it falling on the ground, or somebody picking it up, or just a glitch—if thousands of phones in an area suddenly showed movement, perhaps it is indicative of an earthquake. In this way, it may be possible for smartphones to be used in lieu of, or at least in supplement to, traditional seismic networks.

Further, this approach has important ramifications for developing countries. Once again, seismometers are expensive. But nearly everyone has a smartphone. If scientists can develop a universal and scalable system for earthquake early warning utilizing smartphones—or even small, cheap seismometers built using cell phone accelerometers for this purpose—we could build out early warning systems even for aftershocks in places like Nepal in a matter of days or weeks instead of decades. And lastly, such a system would be important for the very future of science, itself. If, as an individual, anyone could use their own smart phone to so clearly contribute to science, it would be very inspiring and empowering; we would be dramatically improving the accessibility and understanding of science for millions of people around the world.

So next time you’re sitting there thinking about how much your smartphone can do, remember that it can also be used as a scientific instrument. In the future, it just might give you an early warning for an earthquake.



from xda-developers http://ift.tt/1Cngl8D
via IFTTT

$200 Rebate On The Note 4

Samsung-Galaxy-Note-4

Samsung is offering a $200 rebate on purchases of the Samsung Galaxy Note 4 made between 7/7/15 and 7/26/15. Although the catch is that you must pay full price for the device, meaning it is not applicable when used along side discounts and other offers. If you have been considering buying one, now is a great time.



from xda-developers http://ift.tt/1HKnTUM
via IFTTT

Latest YotaPhone2 Kernel Sources

YotaPhone 2

If you are developing for the YotaPhone 2 the latest kernel sources are now available in the form of a 100Mb download direct from their server. If you have been waiting for them, you can pick them up now!



from xda-developers http://ift.tt/1CYqyTt
via IFTTT

Sony: The OEM You Want To Save

Sony

In our recent Discuss article, we asked you readers on which OEM you would like to help. While the answers we received were varied, a lot of these responses and top comments stood out for helping one OEM: Sony.

Some excerpts from our discussion are as below:

Image 001

Image 002

Image 003

Image 004

And many more follow suit. Needless to say, many believe that Sony Mobile as a company is great and is worth saving. And all of these would be happy to hear that Sony will “never ever sell or exit from the current mobile business”, atleast that is what the CEO of Sony Mobile, Hiroki Totoki says.

In an interview with Arabian Business, Hiroki Totoki touches upon different aspects of Sony and its mobile division. Appointed as the CEO of Sony Mobile in November 2014, Mr. Totoki has had a rather successful history at Sony, holding a number of executive roles in his years of service. His appointment came at the time where Sony had started to struggle thanks to poor sales performance and fierce competition in a globalized world. Add to this the fact that the company had to still write off a massive $1.5 billion impairment charge after their split with Ericsson in 2011, and you can see why the company was in dire need of a steady decision maker.

 

I was told that I would become CEO of Sony Mobile in, I think, October, and I was told that this company needs to be turned around as quickly as possible.

 

So I’ve had to work very hard and I have been busy, but people are very cooperative and have shown a lot of energy to turn around the position, which is a good thing. I’m confident that things will continue to get better.

 

Mr. Totoki had his task cut out for him, and in order to do it, he had to resort to strict measures.

 

We are trying to decrease our costs by 30 percent to the end of 2016, and reduce our headcount by 20 percent.

 

We are trying to streamline the organisation as well as our product portfolio to maximise our profitability and improve our ROI. We have set out our plan already and are just starting to execute it. This year, 2015, is a year of big transformation, and we will try to complete this transformation by the end of the year, and hopefully see an improvement in financial performance in 2016.

 

The interview proceeds on to address a rather serious rumor: Will Sony sell its mobile division? Mr. Totoki assures that it won’t, and that these fears originate from a combined effect of writing off the impairment as well as Sony’s exit from the PC business.

 

The speculations arose because in 2014 we made a huge loss as a mobile business.

 

It mainly came from the write-off of the goodwill of our impairment asset. When we bought back Ericsson’s share [in 2012], we bought back 100 percent of it. And obviously that price was high. We had to write it down and it made a substantial loss for the company.

 

But this was an accounting loss and did not impact our cash flow. Our cash flow is very healthy. But the accounting loss was so huge — that’s why people have speculated like this.

 

Before that rumour, we exited the VAIO business, which was the PC business. That led people to think that Sony would exit the smartphone business, as well. But the smartphone business is very different from PCs.

 

Smartphones are completely connected to other devices, also connected to people’s lives — deeply. And the opportunity for diversification is huge. We’re heading to the IoT (Internet of Things) era and have to produce a number of new categories of products in this world, otherwise we could lose out on a very important business domain.

 

In that sense we will never ever sell or exit from the current mobile business.

 

His statements do not exactly refer to the fate of Sony’s mobile lineup, but go in a rather roundabout manner to say that Sony will not exit out of the mobile business because it is tied up directly and indirectly to the IoT, which he believes will play a significant part in the future.

Of course, this could be the cynic in us trying to read between the lines. Nonetheless, as the CEO of Sony Mobile, Mr. Totoki is optimistic about the future and Sony’s position in it.

 

When we introduced the Z3 to the market it was very well accepted. But now we see a lot of emerging players, including Chinese manufacturers trying to make good quality smartphones, so the competition has become severe.

 

We’re trying to introduce new technology in the future and diversify our product even more. The quality and strength of the product is always the starting point as far as strategy goes for the company.

 

For example, with the C4, people like the wider screen, and that product has won some segment in this area, and initial feedback is very good, so I’m confident it will be a success.

 

Moving on to the topic of smartwatches and wearables in general, Mr. Totoki is keen on expanding beyond these, more specifically to IoT.

 

We launched our smartwatch relatively early in the industry.

 

We’ve got a good feel for the technology and we’re not limited to the smartwatch. We include smart wear, smart products, and smart devices, and there are many more things now being made for the IoT (Internet of Things) era.

 

Those types of devices, and that side of the industry have become huge, and not limited to a smartphone device. Now we try to develop smart devices that are connected to the smartphone. In the future there will be categories of products that will connect to the network, connect machine to machine, connect machine to human, and connect human to human.

 

That sort of connectivity will expand and we will try to develop even more categories in the future. That’s one major focus for this company. It’s a big future strategy.

 

Talking about competition, Mr. Totoki agrees that the competition is indeed making things interesting. But he believes that the experience Sony provides, as well as innovations and advancements in technology that it can borrow from Sony’s other divisions, will help them to stay relevant in the future.

 

The smartphone device consists of a battery and a screen and chips. These are the main parts of a smartphone, and people can easily make them now.

 

But it is the user experience that is not the same. Even if the device is the same, the user experience is different. And this is a very important point. People are not buying a smartphone because of the device and the way it looks — they are buying it because of the experience.

 

Of course we are using a very good quality of image sensor that our colleagues at Sony created. That’s the craftsmanship in technology that we have to install to provide the best user experience. That sort of craftsmanship in technology is very important — it’s key to becoming more than just a mere smartphone. It takes the quality higher, improves the brand image, and the user experience.

 

On the topic of 5G and Sony’s preparedness to release a 5G-ready product, Mr. Totoki answers in rather vague terms.

 

The technology roadmap is there.

 

The use of the technology will really be country by country. For example, in Japan, 2020 is an Olympic year — it will be the second Olympics in our history and a very important year for us. Leading up to 2020, the government and major operators would like to demonstrate 5G technology in Japan. That’s the roadmap we have in Japan, and I’m sure other countries will have theirs as well.

 

Addressing the elephant in the room that adoption of 5G will bring, Mr. Totoki is confident that 5G will not degrade battery life much beyond what it already is.

 

With 5G technology the interesting thing is that we can increase the usage of the bandwidth and people can enjoy easy access and faster speeds on their network, but we can do this with lower battery consumption. That’s a really interesting aspect.

 

If you look at smartphones and smartwatches today, many device makers and watch makers are making products, but the battery life is one big pain-point, obviously. Combined with the technological progress of batteries, as well as other technology progression, we will be able to provide a much better experience to the people. And this will develop and expand the business.

 

Ending the interview, Mr. Totoki address globalization and its impact on business in recent times.

 

My observation is that many boundaries have disappeared between countries.

There is no segregation of information — those boundaries have disappeared now and we are working for the one economy all across the world. All of us are under one roof.

 

There are many players, many emerging players, and new companies that can jump into the industry. The world has become flat and competition has become severe. And that’s good for us. We can change the competitive landscape with one new technology, or even one new product.

 

That’s happening all over the world, and we have to face this reality. We shouldn’t become nostalgic for the way things have worked in the past — we have to see the future and be excited by it.

 

Indeed, the future is exciting. The first half of 2015 brought along new flagships and pseudo-flagships, new wearables and even Google’s take on IoT. From the looks of it and under the guidance of Mr. Hiroki Totoki, Sony is  prepared to take things head on. Here’s hoping that we continue to see more of Sony, from Sony in the future.



from xda-developers http://ift.tt/1S5P2Bf
via IFTTT

Google Maps Updated To 9.11.0

Maps

In the latest update to Google Maps, comes a long awaited for feature, you can now choose to hide the UI by simply tapping on the map. You can now also share your MyMaps and edit captions for location-tagged photos direct from within the app itself.



from xda-developers http://ift.tt/1HKcPah
via IFTTT