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Archive for March, 2011

Motorola Quench XT5

Motorola is aiming to be Android top dog and to achieve that takes not only awesome high-end smartphones like the Atrixes, but also phones that take potential buyers’ wallets into consideration. This resulted in the Quench XT5, a phone that takes on the LG Optimus One P500 and the Samsung Galaxy 3. We clearly liked both of the aforementioned devices, so the XT5 has quite the task ahead of it.


The candybar XT5 just screams cool the moment you lay eyes on it. The exterior is mostly comprised of a matte black finish, with a dash of chrome thrown in for good measure on the rims. The front is mostly glossy and it houses the 320×480 3.2-inch Gorilla Glass encased display, which is pretty high quality for the resolution it runs at. Below the display lies the four generic touch-sensitive keys, but Motorola have also included call answer/end keys, as well as a trackball below that. The power button and the 3.5mm audio jack are on top, a flapped micro-USB port is on the left and the right houses the volume rocker and the click button used for the 5 megapixel fixed focus camera which is located on the back. The Motorola logo also doesn’t take up the usual spot centered above the display, but is instead positioned on the top left, which is pretty cool if you ask me.

Well designed and built




The phone doesn’t feel rugged but it does feel extremely solidly built. It’s not bulky either, which is a bonus as a solid light phone is pretty hard to come across these days. Overall, the XT5’s design gets a major thumbs up.

Features and Performance


The XT5 is powered by a Qualcomm MSM7227 processor, which is clocked at 600MHz, and comes with stock Android 2.1 Eclair. Eclair’s a bit of a bummer, not by itself, but simply because the Optimus One ships with FroYo out of the box, and even the perennially slow Samsung have announced a FroYo update for the Galaxy 3. Motorola on the other hand, are being rather defiant about updating their phones, and there’s no news on if/when the XT will get an OS update.

One might expect the 600MHz processor to cause a performance bottleneck, but contrary to expectations, the XT5 performs admirably. The touchscreen, even when using multi-touch, is responsive and there’s minimal to no lag present and even that only shows up when the phone’s undergoing heavy multi-tasking. The accelerometer is also quite responsive and it recognizes tilts quickly and accurately.

Performs pretty well, too!





The call answer/end buttons are a bit of a headscratcher. While the OS can be configured to allow those buttons to activate the display (it’s not enabled by default), the call end button doesn’t take you back to the home screen. It’s not a dealbreaker by any means, but I would have liked to have at least an option that enabled that function. The clickable trackball, on the other hand, works fine and is a real help while browsing the web.

There are three different keyboard layouts for text input, which can be changed at will by swiping over them. These include the standard QWERTY layout, the numeric keypad and even a half-QWERTY keypad. The keys are well spaced out, especially in landscape mode, so typing isn’t much of a hassle.


The video player on the XT5 is decent, as its augmented by a pretty good screen. It only plays files of resolutions of up to 640×480 (640×360 for 16:9 videos), but the codec support is pretty good, with DivX and H264 both supported.

Where the Quench surprisingly shines is the music department. The DAC is high-grade stuff for a phone in this budget range and sounds better than most PMPs – it’s loud enough and provides a decent soundstage with good bass and treble levels. Of course, the problem that music players on most Android Phones have – complete lack of EQ Settings – returns, but a quick install of any of the third-party music players available on the Android Market will unlock the true potential of the XT5’s DAC.


Jack it in


The bundled handsfree is of an earbud design so it could be either a good or a bad thing, depending on your preference, but they are built decently and sound decent too. They’re obviously no match for a good pair of earphones, but as bundled handsfrees go they’re fantastic.




The Quench XT5 is 3G enabled, HSDPA even, along with the other standard connectivity options like EDGE and GPRS. WiFi and Bluetooth 2.0 with A2DP is also included.

On the software front, the phone comes pre-loaded with Gtalk, MySpace and Facebook apps, you’ll have to get the Twitter app yourself. E-mail support includes your standard POP/IMAP accounts, along with Gmail.

The phone ships with GPS, a-GPS support and even has a GPS tracker that, as the name gives away, tracks your movements if you enable it. This is in addition to the pre-loaded Google Maps app.

Misc. Features

There are quite a few handy tools thrown onto the XT5. There’s Documents-to-go, a notepad, a file browser and an RSS reader. Being a stock OS, it also has access to virtually every application on the Android Market.


The 5 megapixel fixed focus camera comes with a bunch of options. There are options to change the white balance, colour effects and even parameters such as sharpness, contrast and saturation.

As for performance, the camera doesn’t do dim lighting very well but the well-lit pictures are pretty decent.




The 1270mAh battery manages to hold its own against the XT5, providing talktime of about five hours on an average. Off a full charge, it lasted for around two days with regular usage which includes WiFi, music, videos and calls and three days with light usage, so I’d say that’s pretty impressive.

Of course, the functionality of the auto-brightness feature goes a long way to help this. However, the phone lasted that long without any app killers or battery saver apps, so one could probably go even higher with those installed.


The Motorola Quench XT5, which is available at some places for Rs. 13,990, is quite the sleeper hit. The OS is smooth as butter, music playback is excellent and the Gorilla Glass-encased display ensures scratches don’t affect your viewing experience. Add to that the quality build and the good battery life and the XT5 becomes a fantastic mid-range Android option.

I only hope Motorola follow this through with a Froyo update, and also fix the couple of minor niggles along with it.


Specifications :

General 2G Network GSM 850 / 900 / 1800 / 1900
3G Network HSDPA 850 / 1900 / 2100
Announced 2010, July
Status Available. Released 2010, August
Size Dimensions 114.9 x 56.8 x 12.6 mm, 80 cc
Weight 114 g
Display Type TFT capacitive touchscreen, 256K colors
Size 320 x 480 pixels, 3.2 inches
– Gorilla Glass display
– Trackball
– Accelerometer sensor for UI auto-rotate
– Proximity sensor for auto turn-off
– MOTOBLUR UI with Live Widgets
Sound Alert types Vibration; MP3, WAV ringtones
Loudspeaker Yes
3.5mm jack Yes
Memory Phonebook Practically unlimited entries and fields, Photo call
Call records Practically unlimited
Internal 100 MB storage, 512 MB ROM, 256 MB RAM
Card slot microSD, up to 32GB
Data GPRS Class 12 (4+1/3+2/2+3/1+4 slots), 32 – 48 kbps
EDGE Class 12
3G HSDPA, 7.2 Mbps
WLAN Wi-Fi 802.11 b/g
Bluetooth Yes, v2.0 with A2DP, EDR
Infrared port No
USB Yes, microUSB v2.0
Camera Primary 5 MP, 2592 x 1944 pixels, LED flash
Video Yes, 320×480@15 fps
Secondary No
Features OS Android OS, v2.1 (Eclair)
CPU 600 MHz ARM 11 processor, Adreno 200 GPU, Qualcomm MSM7227 chipset
Messaging SMS (threaded view), MMS, Email, Push Email, IM
Browser HTML
Radio No
Games Downloadable
Colors Brown
GPS Yes, with A-GPS support
Java Via third party application
– Social networking integration with live updates
– Digital compass
– MP3/WMA/WAV/eAAC+ player
– MP4/DivX/H.264/H.263 player
– Google Search, Maps, Gmail,
– YouTube, Google Talk
– Document viewer
– Photo viewer/editor
– Organizer
– Voice memo
– Predictive text input
Battery Standard battery, Li-Po 1270 mAh
Stand-by Up to 560 h (2G) / Up to 545 h (3G)
Talk time Up to 8 h 20 min (2G) / Up to 6 h 30 min (3G)
Misc SAR US 1.16 W/kg (head)     0.59 W/kg (body)
SAR EU 1.16 W/kg (head)
Price group Rs. 12,000 TO 14,000

How Anti-Viruses Works???

Anti-Virus is a software or a program that can scan your files and data in your computer prevent you from firmwares and viruses…

How Does it works

Anti-Virus uses 2 different techniques to accomplish its tasks :-

  1. Examining Files and comparing its signature/structure to that of viruses present in a database or a text file…This is called a virus-dictionary..
  2. Identifying some suspicious behavior from any Program or Software sitting on the system

Virus-dictionary Method

In a Virus-dictionary Method a Anti-Virus starts by examining a file and checking up the dictionary of known viruses…

Every Binary/ELF/.exe has its own signature if they have different functionality…
Actually by signature we means some data in the bin file..This is a set of opcodes which the computer understands..These are different in every unique program..

When the Anti-Virus gets the signature of the file it then checks for the same signature in the dictionary of known-viruses(reported signatures) if it matches any signature in the dictionary then it is reported as a virus and the required task is performed(Dis-infection , removal ,etc etc..)

For this method to be successful , The virus-dictionary needs to be updated as a new virus-signature is reported.

This Method is quite common in most of the anti-viruses out there but it is not so successful now as its really easy to bypass this protection by using binders (These are the program that binds one program to another) , packers (Packs the signature , simply compresses the opcodes and make it difficult to detect) , encoders (These are the main cause of concern for the Anti-Virus developers out there as its quite a powerful approach , the encoders change the opcodes to something similar which provides the same functionality…It drastically changes the bin signatures and makes it almost undetectable..)

Another con of this Method is that it takes a lot of time and system resources to scan and compare all the files sitting on our system..

The Suspicious – Behaviors Method

In this method the anti-virus simply check for some suspicious – behavior happening on the system.. For checking this the anti-virus today has many modules like :-

  1. Network Traffic Monitors
  2. System Files Monitors
  3. Process Monitors etc etc..

Network Traffic Monitors

Network Traffic Monitors simply monitors the incoming and ongoing network traffic from the system to other systems or the internet…

For eg :-

If there is a trojan sitting on the system..It will certainly listen for the attackers call ..As it receives the attackers call (in the form of a TCP , UDP etc packets) It simply send down the data to the attacker system (most of the trojans) This fluctuates the network traffic and Anti-Virus catches the trojan and performs the required task..

System Files Monitors

The System files Monitors simply checks for the files sitting on the system ..

Eg :-

If there is a virus sitting on a system and it checks for some system files and tries to dlete them then this will Report as a suspicious behaviour to the anti-virus..Then the anti-virus performs the required task..

Process Monitors

The Process Monitors check the process tree of the system and checks if there are some hidden programs running..If it finds something suspicious it reports the anti-virus core and then the required task is performed..

Eg :-

There is a key-logger sitting on the system. Most of the key-loggers have hidden processes and simply reads the key-strokes a user makes..This would be undetectable without the use of Process Monitors..

Actually these were only the features on a basic anti-virus Most of the anti-virus today have Millions of protection systems and features and its not in the scope of this article..

BitTorrent – Tips & Tricks

BitTorrent – Tips & Tricks

BitTorrent - Tips & Tricks


uTorrent is currently the smallest, lightest and most feature packed BitTorrent client available. With a file size of barely a megabyte, it’s perfect for even low powered computers like netbooks and there are some versions available for mobile devices as well that allow you to connect to your home PC and check the status of your downloads. It’s even surpassed the popularity of some previous famous torrent clients like Azureus (now called Vuze). Many first time users of uTorrent may immediately hate it because of the slow speeds or the torrents simply refuse to connect to any seeders or peers. There’s a simple reason behind that; unlike a P2P client like say LimeWire where everything is pre-configured, you need to do a little tweaking to get the best out of uTorrent and that’s exactly what we’ll be discussing today. Other than that, we’ll also share some very interesting features uTorrent has to offer which may go unnoticed for many simply because not everyone is an inquisitive geek.


Solving the NAT Problem


You should have a little green circle here for best results

When you install uTorrent, the application automatically adds an exception to Windows Firewall so the incoming traffic is not blocked. Despite this, you may still get a little exclamation or a red circle in the bottom right corner of uTorrent and if it continues to remain then you may have a NAT (Network Address Translation) problem. Most ISPs (except a few) tend to block P2P traffic which means most of the ports other than the ones used for the HTTP protocol are blocked. What you’re looking for is a green circle with a little tick mark which means your PC is able to receive incoming connections.

There are two ways around this. The first is the simplest way, by default; UPnP is enabled in uTorrent which automatically maps the port you’ve currently assigned with the router. If the router has UPnP support then make sure it’s enabled. For this, you’ll have to enter the router settings and navigate to that section. Since each router has different features and organizational structure, it’s best if you check the manual that came with it or the site. If you’re trying this at work then you’ll have to check with your network administrator for this although I doubt he’ll be of much help unless he’s already busy downloading quietly.

Simply enter the IP of your PC and the port number in both start and end fields and your set

In case you don’t have a router at home or the UPnP trick is still not working, the second one is a sure fix. The first thing you need to do is pick a port number, any random number generated by uTorrent is fine. Next, check if the port is open by going to Options>Setup Guide. Here uncheck the first box ‘Bandwidth’ and only keep the second one (Network) checked. The default port number will already be in there. Click the button ‘Run Tests’ and it will check if the port is open. If it still reports that the port is blocked then you’ll need to open the port in either you modem or router. Most modems supplied by your ISP will have a feature called ‘Virtual Server’. If you aren’t using a modem and just a router then you should find that option over there as well. To know how to access this ‘Virtual Server’ section, I strongly recommend PortForward.com as it has detailed instructions on how to setup port forwarding on virtually every modem/router in the market. Once this is set, just restart uTorrent and you should immediately see a green circle telling you everything’s ok.



Getting the maximum speed from your Internet connection

Even though your NAT problem is fixed, you may find the speeds aren’t really up to the mark. Let’s say you have a 1Mbps line at home, the download speed that you can actually get is 120kBps but somehow you never get beyond 20kBps. This is because your download and upload limit in uTorrent is set to unlimited by default. In India, most Internet plans are capped at a low upload rate despite of having a high download rate. Think of the upload and download rate as lanes, if both are set to unlimited, uTorrent will automatically divide the bandwidth and give each lane equal preference so automatically your download speeds are halved.

The trick to getting the most out of your internet connection is to cap the upload speed in uTorrent. You can do this by going into Options>Preferences> Bandwidth or you can simply right click the status at the bottom and select the upload speed. After a lot of trial and error, I’ve found 9-10kBps to be the sweet spot at my home but it’s not a hard and fast rule. You can experiment a bit and try different combinations to see which works best for your connection. Even after setting that if you’re still getting slow speeds then make sure that torrent has enough seeders or try a different one. There are time when a torrent may show you there are thousands of seeders but you still get shitty speeds which could mean that the people you are connected to are uploading at a slow rate in which case there’s nothing you can do about it.



Schedule Downloads

Not everyone has an unlimited data plan, so for those who rely on the night unlimited plan, uTorrent’s scheduling function comes in really handy. Head over to Options>Preferences>Scheduler and check Enable Scheduler. Now let’s take a simple scenario, I’m on a night unlimited plan which means from 12AM to 8AM, I’m not charged for using the Internet. Each square represents an hour during the day, so from Monday to Saturday, I have marked all the squares white from 8AM to 12AM which means uTorrent will automatically stop any uploads or downloads during this time. Assuming Sundays, you get the entire day to download for free, you can mark everything green. This way, uTorrent will automatically start and stop downloading without the need for your intervention. If you find the browsing speeds drop then you can mark some hours of the day as light green so the bandwidth is limited and you can surf the net properly.



Use Auto-Shutdown to Save Power

A simple but very handy feature which should be used by everyone. You can choose to place the PC on Standby, Hibernate, shutdown when the downloads complete or simply quit the application so that the bandwidth is freed up. This would save you some power as well instead of the PC just remaining on doing nothing.



Maintain a good share ratio

When it comes to torrents, sharing is caring. It’s a good practice to seed the file you’ve already downloaded for sometime at least so that the others have a fair chance of downloading the file. It’s also a good habit since some private torrent sites like Demonoid.com keep a track of your download and upload ratio. Here’s the thing though, once a file is downloaded, uTorrent automatically starts seeding. At some point, you would like to stop seeding the file simply because it’s old or it may be hogging all the upload slots as compared to a newer file that’s being seeded. In this case go the Queuing section in Preferences and instruct uTorrent to stop seeding a file once it has achieved a ratio of 1.0. By default, uTorrent will stop sharing that file once the share ratio reaches 150 percent.


Take advantage of the new Apps feature

The new version of uTorrent includes a new App section which gives you access to more content right in uTorrent. For instance the TED app lets you download all Ted talks or VLC which lets you playback any music or video file you’ve downloaded.

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