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I am Allen. I like Smartphone and Music.

十二月 2016

What is the difference of Qualcomm Quick Charge 3.0 vs 2.0 vs 1.0 solution?

My answer to What is the difference of Qualcomm Quick Charge 3.0 vs 2.0 vs 1.0 solution?

Answer by Allen He:

So here in this passage, we will make a comparison in Quick Charge 3.0, 2.0 and 1.0 to see what the improvement is and how they do benefit our charging experience.

Perhaps the best way to get to know this question is to compare the charging values between each of Qualcom’s Quick Charge revisions.

Quick Charge 3.0

Find Smartphones, Tablets, and Smart Devices with Snapdragon processors | Qualcomm

Quick Charge 2.0

Find Smartphones, Tablets, and Smart Devices with Snapdragon processors | Qualcomm

Here we can see that the amount of current offered by Quick Charge has remained relatively consistent, but increasing the charging voltage has helped allow for faster charge times. With 3.0, the range of voltages will allow for fast charging and better efficiency.

For smartphones, the actual maximum amount of power available has not really changed from Quick Charge 2.0’s 18W maximum. Newer 9V models will still take the same 18W peak power as before, although lower voltage batteries may receive a power boost, allowing them to charge up a little faster than before. But this all depends on the exact hardware.

Importantly, Qualcomm has retained backwards compatibility with its 2.0 and 1.0 standards. As the power draw is handled on the smartphone side, you will safely receive the maximum amount of power for your device using any of the certified chargers. However, you won’t achieve full charging speeds if you try charging newer phones with older lower power chargers.

Although Qualcomm supports Quick Charge in all of its new SoCs, it is still up to smartphone and tablet manufacturers to implement the specific circuitry required to make full use of the fastest charging speeds available. Keep an eye out for Quick Charge 3.0 devices.

Related articles:

What Is Quick Charge 3.0

What is Quick Charge?

Top 5 Best Quick Charge Power Bank

What is the difference of Qualcomm Quick Charge 3.0 vs 2.0 vs 1.0 solution?

What is Qualcomm quick charge?

My answer to What is Qualcomm quick charge?

Answer by Allen He:

This is Allen He. I have written a article about this at: What is Quick Charge? by Allen He on Charging Station

Quick Charge/Fast Charge is the next generation of fast charging technology for devices like Smartphone,Smart Power Bank etc. Quick Charge Means Less time charging, More time doing. Here i Collect Top 5 mainstream Quick Charge solutions: Qualcomm Quick Charge , MTK Pump Express, TI MaxCharge, USB 3.1 PD and OPPO VOOC Flash Charge.

1.Qualcomm Quick Charge

Quick Charge 3.0 is engineered to refuel devices up to four times faster than conventional charging. It is designed to charge twice as fast as Quick Charge 1.0 and to be 38 percent more efficient than Quick Charge 2.0. Now consumers can spend even less time charging, and can grab and go more quickly.

How does it work? Quick Charge 3.0 employs Intelligent Negotiation for Optimum Voltage (INOV), an algorithm which allows your portable device to determine what power level to request at any point in time, enabling optimum power transfer while maximizing efficiency. It also supports wider voltage options, allowing a mobile device to dynamically adjust to the ideal voltage level supported by that specific device. Specifically, Quick Charge 3.0 offers a more granular range of voltages: 200mV increments, from 3.6V to 20V. That way your phone can target one of dozens of power levels.

More at: https://www.qualcomm.com/product…

2. MediatekPump Express Plus

MTK also released Pump Express and Pump Express Plus technology separately in Feburary and May 2015. The official said it can improve 45% charging speed, of course, it will also need specific charger.

Pump Experss technology mainly depends on the inbuilt PMIC which allows the electric current of the charger to decide the initial voltage that charging needs, and then PMIC will give its impulse current order to the charger via USB Vbus to command the charger output the voltage according to the order, finally, when the voltage is increased to 5V, it can get the largest charging current.

More at: http://www.mediatek.com/zh-CN/fe…

3. TI MaxCharge

Description

The bq25892 is a highly-integrated switch-mode battery charge management and system power path management device for single cell Li-Ion and Li-polymer battery in a wide range of smartphone and other portable devices with USB or high voltage adaptors. Its low impedance power path optimizes switch-mode operation efficiency, reduces battery charging time and extends battery life during discharging phase. The I2C serial interface with charging and system settings makes the device a truly flexible solution.

Features

Support high voltage adaptor to achieve up to 5A chargeing current
Highly integrated solution with the highest efficiency
Input Current Optimizer (ICO) to best utilize the adaptor
ADC to provide system and battery monitoringBoth host control and autonomous charging when the host is not available
Integrated low Rdson battery FET for long battery run time

More at: http://www.ti.com/tool/tida-00538

4.USB 3.1 PD

USB Power Delivery, USB has evolved from a data interface capable of supplying limited power to a primary provider of power with a data interface. Today many devices charge or get their power from USB ports contained in laptops, cars, aircraft or even wall sockets. USB has become a ubiquitous power socket for many small devices such as cell phones, MP3 players and other hand-held devices. Users need USB to fulfil their requirements not only in terms of data but also to provide power to, or charge, their devices simply, often without the need to load a driver, in order to carry out “traditional” USB functions.

The USB Power Delivery Specification enables the maximum functionality of USB by providing more flexible power delivery along with data over a single cable. Its aim is to operate with and build on the existing USB ecosystem.

More at: http://www.usb.org/developers/po…

5.OPPO VOOC

OPPO lately was famous for 5 minitue’s charging time contributes to 2 hours’ talk time. Many people wonder how they made this. In fact, this is OPPO’s Quick Charge patent thecnology, VOOC Flash Charge.

Different from the way that Qualcomm Quick Charge 2.0 and MTK Pump Express achieve quick charge by improving the charging voltage, OPPO’s unique VOOC Flash Charge is to decrease the voltage and improve the current to achieve quick charging effect.

Normally speaking, the standard Micro USB port has 5 needles, and the mobile phone battery has 4 to 5 contacts. While VOOC Flash Charge uses 7 needles Micro USB port and battery with 8 metal contacts. The extra needles and contacts can be refered as the paths to batteries. In this way, the charging speed can be improved.

But what pitiful is that VOOC Flash Charge only supports OPPO smartphones, such as OPPO R7, R7 Plus, N3, Find 7 and so on. If you want to experience charging 5 minitues to talk for 2 hours, better get an OPPO

More at: http://www.oppo.com/en/technolog…

What is Qualcomm quick charge?

What Is Quick Charge 3.0?

My answer to What Is Quick Charge 3.0?

Answer by Allen He:

For heavy users of mobile phone or other electric devices, charging their devices anytime and where seems super important. But one thing more essential is to charge devices quicker. Therefore Quick Charge technology came into the market and developed to Quick Charge 3.0 recently.

If you’re new to the concept of quick charging, the result is in the name: your smartphone charges up faster than it would without Quick Charge technology. Qualcomm boasts a fourfold increase in charging times over conventional chargers with Quick Charge 3.0, up from the 40 percent speed increase offered by its first generation technology. However, one of the interesting things to note is that Qualcomm isn’t touting massive increases in charging times over version 2.0, instead the company is focusing on improved efficiency this time around.

The major new feature with 3.0 is INOV (Intelligent Negotiation for Optimum Voltage), which allows for a fined tuned power output and a more optimized charging cycle. Firstly, different batteries require different charging voltages. Version 2.0 supported four modes at varying power levels, 5 volts/2amps, 9V/2A, 12V/1.67A, and a 20 volt option. Quick Charge 3.0’s INOV communicates with the device to request any voltage between 3.2V and 20V at 200mV increments, allowing for a wider selection of voltages.

INOV has the added benefit of being able to dynamically adjust the charging voltage over the battery charging cycle. As a battery charges up, it slowly draws less and less current, which is partly why it takes longer to charge the last 20 percent than the first. Qualcomm states that its new technology allows the phone to request just enough voltage to reach the desired charge current, thereby maximising efficiency.

This is useful as it reduces the amount of energy wasted during charging. Previously, extra power not used to charge the battery would be lost as heat, warming up your phone and reducing the longevity of the battery. By exerting more control over charging efficiency, less power is wasted, resulting in less heat. Qualcomm states that version 3.0 is up to 38 percent more efficiency than 2.0, which is a substantial energy saving.

Energy efficiency is really the major new feature with Quick Charge 3.0, but this is still very important as cooler batteries will last longer than hot ones.

Related articles:

Quick Charge 3.0 vs 2.0 vs 1.0

What is Quick Charge?

Top 5 Best Quick Charge Power Bank

What is Quick Charge Power Bank?

What Is Quick Charge 3.0?

How can I increase my Android smartphone’s speed?

My answer to How can I increase my Android smartphone's speed?

Answer by Allen He:

Firstly, We should find out what is causing the problem. an app, multiple apps, the system itself? Trepn Profiler is a power and performance profiling application for mobile devices. It is designed to help you identify apps that hog your CPU, consume excess data or drain your battery. Trepn can also produce app-specific or system-wide profiles and contains various methods for displaying accumulated data. You can save your profiled data for offline viewing and analysis and even have performance overlays on running apps. Once you’ve figured out your specific issue, you can move on to the solutions below.

Free up some space. Photos you’ve taken and apps you’ve installed can take their space on your phone. Until one day, all of these things take too much space on your phone. Your phone will be slower. It needs a little breathing room to run smoothly. You can check how much space you have left by heading to the Storage section of Settings. One of the easiest ways to free up space is to tap Applications and see which apps you can uninstall.

Tap the entry for an app you no longer need and then tap Uninstall. You can repeat this process as many times as necessary for any apps you feel you can live without.

There are other ways you can free up space. The files you have downloaded are probably still sitting in storage wasting space and can be removed. In Storage, tap Downloads, select the files you want to remove and then tap the Bin button.

Many of the apps you have installed use data caches in an attempt to speed up operations. This is effective up to a point, but if you are running short of space, it can actually be counter-productive. To free up this space, hit the Clear cached data option and then tap OK to confirm.

More files ripe for deletion can be found in the Miscellaneous files section. Tick the boxes next to any types of file you’d like to remove – backups, files received via Bluetooth, playlist files, and so on – and then tap the bin button. You can keep an eye on how much space you have freed up when you look at the Available space section.

You can stop use any apps that was pre-loaded on your phone. If you have rooted your Android, you can actually get rid of these apps, but if not, you can go to the app properties and disable it to prevent it from running and using up your phone’s resources.

Battery is one of the reason that makes phone slow. If your battery is low, many devices switch to battery-saving mode which runs the device in low-performance mode. If that’s the case, charge your phone as soon as possible. If you forget to turn off your phone or restart it for weeks or month, which would be another cause. So just restart your phone.

More Tips: 3 Tips to Accelerate Android Smartphone by Allen He on Smartphone

How can I increase my Android smartphone's speed?

Why do all smartphones get slower over time or after installing apps?

My answer to Why do all smartphones get slower over time or after installing apps?

Answer by Allen He:

Android system in order to protect the stability and security of the device, the applications can automatically only be installed to the phone memory application. In brief it can only be installed to the C disk when we install software on the PCs. In general, memory space of Android mobile phone is not large enough, install a few applications would occupy for more than half space, let alone large games. So we have to find ways to make the application can be installed to the memory card which is App2sd. Although the system itself supports App2sd since Android 2.2, the installation of the software still be installed to the phone memory by default, we need to “Settings – Application – Management Application” to open the application to move the page, click on “Move to SD card” to move it to the memory card.

Android system supports multi-threaded processing which is the reason a lot of users prefer Android device but not iPhone. But the side effects of multi-threaded is start up for a long time and the phone works more and more slowly. Android system can only complete the switching between background tasks and can not close the background program. Use some third-party task to manage applications is much more convenient. Download and run the manage applications after installation, the software would automatically display the currently running application list in the background, now you can close the background process anytime.

CPU of Android equipment works the same principle as PC, running speed of Android phone largely depends on the CPU performance, such as frequency, cache, instruction set. So we often see overclocking speed statement which means improve the CPU operating frequency to achieve the purpose of speeding up the system. Overclocking the phone is not so complex as PC. You need to obtain ROOT permissions at first, and then you can use the software.The phone’s speed and game performance would have a lot of improvement after overclocking, meanwhile, the heat increase significantly.

Why do all smartphones get slower over time or after installing apps?

3 Tips to Accelerate Android Smartphone

My @Quora post: 3 Tips to Accelerate Android Smartphone

Post by Allen He:

3 Tips to Accelerate Android Smartphone

3 Tips to Accelerate Android Smartphone

Why does my iPad say ‘not charging’ even when it is plugged in?

My answer to Why does my iPad say 'not charging' even when it is plugged in?

Answer by Allen He:

Why iPad says not charging?

Have you ever met the occasion that iPad says not charging? (No matter which version has the same problem) Why? Before contacting Apple for help, you should read the article that offers some steps to make your iPad say yes.

1. USB ports are wrong for iPad

Sometimes, we just plug the electronic devices into the USB ports when they are power off. But, iPad says not to USB for normal USB ports with ordinary power can not feed juice to iPad. Original USB Power Adapter should be the right choice. Portable charger (What is a portable charger?) will be an alternative.

2. Use the right charger

Answer me a question, can you distinguish between iPhone charger and iPad charger? If you are plugging the iPad into an iPhone charger, iPad will say not charging then it’s normal. Because iPhone chargers is not compatible with iPad. In brief, the iPhone charger provide less power to iPad so that’s why iPad says not charging. The right way to charge your iPad is with the included 10W or 12W (5W on Mini) USB Power Adapter. About the coming iPhone 5se , what does the charger look like? Follow the tips to fix the iPad not charging error.

3. Warm iPad up

It’s ridiculous before I get the tip. But, it works:( In winter, you’d better to give a little time to warm iPad up before charging it or the better way is to wrap iPad with clothes or quilt while charging it.

4. Power is not enough

A portable charger increases the time you can play on your devices so using a right power bank to feed juice to the iPad is usually. Here is a tip, getting some ideas about mAh (What is mAh in power bank?) before you have a portable charger for you iPad. Power is not enough is another reason why iPad says not charging! For example, 20000mAh is a high capacity that provide an iPad Mini 3 full charge 2 times. Choose a 20000mAh Power Bank to stop iPad says not charging.

5. iPad is not happy

Occasionally, hardware problem with the Lightning or Dock connector causes iPad says not charging, but often enough it’s a software issue that a few simple steps can fix.

6. Call Apple for help

It’s wise to make a call to Apple after you try above steps. Professional suggestions about why iPad says not charging will come to you, while it may come with fee.

Why does my iPad say 'not charging' even when it is plugged in?

Where to buy a reliable power bank?

My answer to Where to buy a reliable power bank?

Answer by Allen He:

Phones get faster every year, but battery life doesn’t seem to get any better. If you need to keep your smartphone – or tablet or other USB-powered device – going all day, you need a power bank.

So how to choose a suitable power bank? Before making a decision, you could reder to this passage: Don’t buy power bank before you read this.

— So, what’s next?

— Surely, to buy one for myself!

— So where to buy it? Or where to buy a reliable power bank?

Undoubtedly, having a reliable power bank for your smartphone, or tablet or other USB-powered device to boost a depleted battery can be a real lifesaver – especially when a charger isn’t accessible.

Amazon

Online shopping for a power bank, that’s just a peice of cake. However, on the other hand, you should have to select one, a branded or a generic? Although Amazon has offered you a long list of selections, actually, you should exclude those unwanted one by one. And to the point, that still could not assure the qualities.

Similar to Amazon, eBay has rounded up all kinds of power banks for you, even you wanna buy some branded classic which is however not available in stores, via a third-party or private person. But it has the same shortcoming with Amazon, that is, assured-quality.

Branded Store

If you decide to buy some branded power bank, its official online shop or local shop is a good choice. At least, you’ve avoided 50% chance to get hurted while charging your devices. Of course, it’s not absolute. Anything to do with battery will have the chance for accidents, for example, to explode.

More questions about how to buy a reliable or quality-assured power bank, please comment below and we’ll get it solved right away.

More: Top Questions about Power Bank before you buy ?

Where to buy a reliable power bank?

Top 3 Best GoPro Cameras

My @Quora post: Top 3 Best GoPro Cameras

Post by Allen He:

Top 3 Best GoPro Cameras

Top 3 Best GoPro Cameras

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