Thursday, 19 March 2015

1G, 2G, 3G, 4G, and LTE mobile network

As the name would suggest, 1G was the first generation of mobile networks. Here basically, radio signals were transmitted in ‘Analogue’ form and expectedly, one was not able to do much other than sending text messaging and making calls. But the biggest disadvantage, however came in the form of limited network availability, as in the network was available only within the country.

2G networks on the other hand, were based on narrow band digital networks. Signals were transmitted in the digital format and this dramatically improved the quality of calls and also reduced the complexity of data transmission. The other advantage of the 2G network came in the form of Semi Global Roaming System, which enabled the connectivity all over the world.

Between 2G and 3G there was a short phase in between where mobile phones became sleeker and more ‘pocketable’ if we can call it that.  This is popularly referred to as 2.5G where the quantity of radio waves to be transmitted was much lower. This in turn had an effect on the shape and structure of mobile phones. But most of all, 2.5G helped in the ushering of GPRS (General Pocket Radio Service).

The 3rd generation of mobile networks has become popular largely thanks to the ability of users to access the Internet over devices like mobiles and tablets. The speed of data transmission on a 3G network ranges between 384KBPS to 2MBPS. This means a 3G network actually allows for more data transmission and therefore the network enables voice and video calling, file transmission, internet surfing, online TV, view high definition videos, play games and much more.  3G is the best option for users who need to always stay connected to Internet.

4th Generation mobile networks are believed to provide many value added features. In addition to all the 3G facilities, data transmission is believed to go through the roof with speeds ranging between 100MBPs to 1GBPS. Phew! Happy talking, surfing, conferencing, chatting, networking, partying, or whatever you want to do on your mobile phone.

If you own a smartphone, you undoubtedly have heard the terms 3G, 4G, and LTE. Cellular providers such as AT&T and Verizon continuously advertise they have biggest or fastest 4G network or LTE network. It’s difficult to understand how each company can make those claims. However, when buying a new smartphone, it is important to understand the difference. The type of data network can directly impact the performance of your smartphone.
When you buy a smartphone, you are typically required to sign up for a service plan that defines a certain amount of calling minutes and data usage. Once connected to the cellular provider’s network, the smartphone can communicate with the outside world to support features such as email, maps, and Internet browsing. Many of the smartphone apps rely on sending and receiving data across the network.
When describing smartphone data networks, you commonly hear the terms 3G, 4G, and LTE. This refers to the generation of network technology.  The third generation network, known as 3G, is the oldest technology of the group. 4G is the fourth generation data network and LTE stands for Long Term Evolution. The basic difference between them is the speed of the network. When selecting a smartphone, the older models may not support the newer data network technology. It is important to select a model that supports a data speed appropriate for your needs.

3G Network

The 3G network was the first technology with sufficient speed to provide a decent user experience on a smartphone.  There were some smartphones that used the older 2G EDGE technology, but the data speeds were slow and the user spent a lot of time waiting for data to load.
Each of the major cellular providers have 3G networks that provide coverage across most of the country. There are two competing 3G technologies currently being used: Global System for Mobiles (GSM) and Code Division Multiple Access (CDMA). AT&T and T-Mobile use the GSM technology while Verizon and Sprint use the CDMA technology. Since the technologies are not compatible with each other, this is the reason you can’t use a Verizon phone on an AT&T network (or vice versa).

4G and LTE

The 4G technology is the successor to the 3G technology. Cellular providers are still building out their 4G networks. Theoretically, 4G is much faster than 3G. But before we start comparing 4G speed to 3G speed, it is important to understand there are different versions of 4G.
When talking about 4G, things can get a little confusing. Basically, there is 4G and 4G LTE.  Many people consider LTE to be true 4G technology. Generally, if a cellular provider describes a 4G network without mentioning LTE, they are probably talking about a High Speed Packet Access (HSPA) network. The HSPA network is a faster version of the 3G GSM network. While not as fast as an LTE network, it is still faster than a 3G network. Since LTE is still relatively new, the cellular providers haven’t fully built out their LTE networks yet. Be careful when looking at the network coverage maps on the providers’ websites. Some companies claim to have broad nationwide 4G coverage.  They may really be taking about HSPA coverage and not LTE coverage.
In theory, LTE can be up to ten times faster than 3G. In practice, the actual network speed will vary based on network load and signal strength. Even if LTE does not meet its theoretical speed, it is still much faster than 3G. Activities that require large amounts of data, such as streaming movies, work very well on an LTE network. If you plan to perform a lot of data-hungry activities or simply want the best performance when surfing the Internet, you should really plan on buying a smartphone that supports LTE.

What iPhone Models Support LTE?

If you are considering buying an iPhone, you will find four models available: iPhone 6 Plus, iPhone 6, iPhone 5S, and the iPhone 5c. All these models support LTE.  The iPhone 5 was the first model to support LTE. The iPhone models prior to the iPhone 5 do not support LTE. The iPhone 4S supports HSPA, which some cellular carriers call 4G. The iPhone 4 will only support 3G networks.
This page on the Apple website compares all the current iPhone models.

When buying a new smartphone, don’t be fooled by all the marketing hype about 4G and LTE networks. Understand the different network technologies available and try using the Internet on the smartphone before you buy. The LTE technology provides the fastest cellular data network available and the speed difference between LTE, 4G (HSPA), and 3G can be quite noticeable.

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