Mobile Generations – 2G

    • 2G:

1990 was the era of GSM mobile phones (Global System for Mobile Communications), the Second Generation (2G). Technology includes the TDMA – Time Division Multiple Access along with the 1G’s FDMA. In 1991 the first GSM network opened in Finland. Each user gets a SIM card from the Operator which stores the subscriber identity and also provides the authentication to use the Mobile Service. The 2G phone systems uses the Digital Technology for communication. This means the transmission and reception of the signal is digital (bits), voice communications are digitally encrypted. It means greater privacy, efficient data transfer without noise and also less expensive devices. Similar to its predecessor 1G the devices works in Full Duplex mode. 2G isn’t the latest smartphone tech in other news, it’s slowly dying and getting replaced by 3G and 4G.

Due to the Digital technology 2G allowed Data Services (GPRS) and also introduced Short Messaging Service (SMS), Prepaid Service.
Many other features like EDGE (Enhanced Data Rates for GSM Evolution) or EGPRS (Enhanced GPRS), WAP – Wireless Application Protocol, MMS – Multimedia Messaging Service were introduced with the two revisions 2.5G & 2.75G.

This generation shares a major part in the global market till today. It means many cell phone users still use this technology.

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Android malware hits the Google Play again, BadNews behind it

Google Play store the ocean filled with android apps has been hit with a latest malware called BadNews which is present in 32 apps. LookOut a security firm is the one who identified and reported to Google for removal of these malicious software apps. But before its removal the applications has been already downloaded between 2,000,000 – 9,000,000 times. Currently Google has removed these apps from the store and suspended the developer accounts associated with them. The android users in Russia, Belarus, Ukraine, Armenia and Kazakhstan are affected from this malware.

Read: Information about Smartphone Virus and Prevention tips

Once activated the software starts sending the critical information like the phone number, imei number etc to the server periodically (spyware). And then the server responds with a notification to the user to update the app in the name of skype or Russian social network Vkontakte. The url for this update will actually lead to the download of AlphaSMS fraud app which is famous for stealing the cash from the user by sending premium rate text messages.

For the list of affected apps, its impact and other details refer the LookOut’s Blog.

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5 features to look for in a budget tablet – 2013

Today Tablet PC’s have become very popular among students, businessmen, professionals and technology lovers. They are used for browsing, gaming, watching videos/streaming contents apart from just video chatting.
India alone has more than 3 million tablet users currently and the number is busy increasing. With such popularity these days variety of budget oriented tablets ranging between Rs 7k to Rs 10k are coming up in the market from both big and local brands.
So selecting a right tablet with promising technical specs from the available ones without getting trapped to their attractive price tag is quiet tough. In this article we will be looking at the most probable features which should be considered before buying one.

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Below are the list of best features to be looked in a 2013 budget tablet before buying:
1) System – Dual Core + GPU + Memory
In the budget section the consumer cannot expect a very high end specs and performance from the device. However the technology today is so much advanced that the buyer can expect an enough powerful machine with decent performance in the affordable devices.
Looking at today’s technology the tablet’s system on chip (SoC) must incorporate atleast a dual core processor (would be good if its Cortex A9/A15 CPU) clocked between 1 to 1.5 Ghz frequency alongwith and a powerful GPU (most probably Adreno or Mali 400 or PowerVR SGX series).
The GPU performance is gaining lot of importance from a user’s perspective because applications and high graphics games simply require a significantly faster graphics core to provide an optimum experience without any lags.
In the memory front, larger the RAM better is its multi functionality. 512MB or 1GB RAM would be an ideal choice with a minimum of 4 to 8GB internal memory along with a micro SD card slot.

Tablet with similar specsAcer Iconica B1 (currently selling between rupees 7K to 8K)

2) Operating System
Here it is important to make a decision which Os is better for you. Currently there are four choices in this category – Android, iOS, Blackberry and Windows where Android seems to have more number of choices then any other platform.
Word of advice would be go for the brand which has reputation of providing software upgrades. One of my friend had a tablet with a bug in Wifi connection. The tablet used to get disconnected from the internet very frequently. To his fate the tablet was from a start-up brand. Till now he hasn’t got any bugfixes for it and he cannot do anything about it but just live with it.
So the main advantage of software updates is not only minor enhancements but also the much needed bug fixes.

More readingWorld’s first Dual Os running device – ASUS Transformer All-in-One Tablet PC

3) Display
Tablets have their screen size ranging from 7-inch to 10-inch diagonally. Most of the tablet in the economical range come with the screen size between 7 to 8-inch which sounds good for portability.
Most important feature to look for in the display segment is whether the tablet’s screen is integrated with IPS technology or not. If its not then the user mayn’t get a wider viewing angle.

4) Connectivity
The connectivity option for a tablet under 10K is sparse when compared with high end and more expensive tablet. Choose a tab which include many connectivity options like – Wi-Fi or 3G for video chatting.
– Tablet with a sim slot for those who use their tab as smartphones. This feature is an added advantage for the tablets portability. With the internet package activated on the SIM Card one can browse or watch videos online far from home.
Other features should also include HDMI Port for sharing the pictures, videos on the TV. USB port can be used for connecting keyboard, printer, pen drives, 3G Dongles etc

5) Battery
Battery life of a tablet depends on your usage. But look for a tab which must atleast offer 5-6 hours of continuous usage on a single charge.

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Mobile Generations – 3G


    • 3G (IMT-2000):

You may be wondering what are these Mobile Generations and who creates them right? The answer is International Telecommunication Union (ITU). It is a body formed by the United Nations which takes care of maintaining the Telecommunication Standards worldwide.

Overview –
Japan’s NTT Docomo launched world’s first 3G network in the year 2001. With the success of 2G Mobile Technology, the Third Generation (3G) Mobile Networks and Applications have faced with lots of expectations such as Online Services at fast rate, Video Calls, Mobile TV etc.

For a moment let me focus on the killer apps of 2G like SMS (Short Messaging Service) is one such application which changed the mode of communication, using GPRS (General Packet Radio Service) Technology we can download the ringtones, wallpapers.
In the similar way the Cell phone providers have invested their time and money to build new mobile services which will become the killer applications/features for 3G networks. One such app is sending and receiving the data at high speed. 3G is featured in the specifications of samsung galaxy tab a.

Features in 3G –
The development of 2.5G and 2.75G led to the transition to 3G. There are some features in 3G which are enhanced versions of its predecessors.

Features include –
› Multimedia streaming & download: We can watch YouTube videos, download latest movies and watch them right in your mobile.

› High speed mobile broadband: Surfing internet at fast rate. If i had to download a 5mb file then with 2G network it may take around 5mins but with 3G network it just takes around 20 to 30seconds, that fast is this network. But this depends on the number of users accessing that network at a time.
› Download of large email attachments: We can download large files in seconds.
› Live Mobile TV: Live News, TV serials/Shows can be seen directly in our 3G phone with the help of Live streaming videos. This feature helps us while we are traveling and don’t want to miss our favorite show.
› Secure Mobile eCommerce: Making transactions on mobile like buying and selling stuffs, Mobile Banking.

› Mobile Gaming: Game freak guys can play multi player games on this network.
› Location-Based Services: We can utilize this feature for Navigation, Tracking, Maps.
› Video calling: You can have a live video conferencing with your loved ones, official purpose. To support this feature the network should have high bandwidth and 3G network has it.

Pros & Cons –
The advantages includes the features mentioned above and in addition to that the 3G enabled devices can also be used as the Data Cards for Laptops to access the Internet with a broadband experience.
The drawbacks are –
› To support the 3G technology the Network operator should upgrade the whole base station since the bandwidth required for 3G is more. So it fetches lot of investment from the operator side
› Cell Phone users have to pay more to buy a 3G enabled phone.
› Power consumption increases.
› Voice quality remains same as 2G.

Conclusion –
Majority of the features mentioned in 3G are already available in 2.5G & 2.75G such as Browsing the Internet, Sending and receiving of the videos, e-mailing. Therefore we shouldn’t consider 3G as totally a new technology. Instead, we can say 3G is an enhanced version of the 2G technology with faster data communication rate.
Currently 3G networks are installed almost all over the world and the subscribers are increasing day by day. 3G technology is well accepted and has gained wide spread popularity in today’s world.