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      Why is your 3G / 4G speed slow? Find out the little things that are unknown


      How important the internet is today, one day without broadband line or mobile internet can be felt. In my own words, before going to sleep, all the favourite websites and especially YouTube, once you go to sleep, you do not actually fall asleep, many times I fall asleep after playing videos, then think about what could happen that day without the Internet.
      Anyway, one day while chatting with a friend on a social app, all of a sudden when I need a file I ask him to upload it, he says, “Mobile internet limit is over” – this question immediately rings in my mind, well , Why Mobile Operators Don’t Offer Unlimited Mobile Internet? Where broadband or WIFI users can enjoy unlimited data!
      After researching why SIM companies don’t come up with unlimited internet plans and using some of my own ingenuity, I was finally able to come to a conclusion on the subject.

      Unlimited mobile internet

      The use of internet would never have become so popular if mobile internet usage was not available. Having broadband at home or in the office is very convenient, but when you are out of the house or uploading photos taken on the beach in Cox’s Bazar to social media, cell internet will be very important, or you can say, you have only one option to access the internet. Again, if we talk about the rural areas of our country, then cell internet is their only hope! Many villages still do not have electricity, and it is a sin to imagine broadband there.
      Now back to our main point, why don’t mobile operators offer unlimited data plans? Again, many operators advertise their internet packs as unlimited, but there is a condition called “Fair Use Policy”. This means that after your internet data usage has exceeded a certain amount, internet speed will be reduced for that month or for a certain period of time. Why do they do that?
      Well, if you want to understand the whole thing easily in detail, then now I am going to shake up the knowledge about some wireless network systems. There are two terms when you use the internet with mobile or the technology used by mobile operators (SIM companies) to get the internet to you. The first term is wireless technology, and the second term is bandwidth connection. If we talk about WIFI hotspots, then why is it necessary to use hotspot on phone and use internet on PC? Of course, the phone has to have WIFI and keep the phone’s data connection on, right? But what if you run a WIFI hotspot without keeping the phone’s data connection on? In that case, of course, you will not get an Internet connection, although your PC will have a WIFI connection.
      What does this mean? Not only WIFI, you also need an active internet connection, then you will be able to broadcast the Internet through WIFI. Mobile operators also use the same principal. 2G, 3G, 4G – these are just wireless technologies like WIFI, but you must have a broadband connection to the cell tower to use them to provide internet access. From that broadband connection the internet is sent to your phone by creating a hotspot through 2G, 3G, 4G wireless technology. Now mobile towers must have T1, T3 type lines connected which have a lot of high bandwidth capacity.
      So now your mobile internet speed depends on two factors, firstly, how much bandwidth you have to handle the broadband connected to your tower and how much of the wireless technology (2G, 3G, 4G) you have connected to the internet. Has the ability to supply.
      For example, suppose you have three wireless routers in your home and a broadband connection of 200 megabits / second. The three routers work using 3 WIFI standards 802.11a, 802.11n, and 802.11ac (these are meant to be compared to 2G, 3G, 4G, respectively). The 802.11a standard has a maximum bandwidth speed of 54 Mbps, the 802.11n has a maximum bandwidth of 300 Mbps and the 802.11ac has a maximum bandwidth of 1300 Mbps.

      So, if you connect WIFI to Router 1 (802.11a) you will only get speeds up to 54 megabits / second, there is no benefit in broadband line speeds up to 200 megabits, because your wireless technology does not have the capacity to handle that bandwidth. When connected to Router 2 (802.11n), and Router 3 (802.11ac), you can easily use the full bandwidth of the broadband line, as these two technologies have the ability to handle all the bandwidth of your line.

      When you think of 2G, this technology does not have the power to give you more speed, so even if your operator’s internet speed is fast, you will not get good speed using 2G. On the other hand, 3G technology is not so advanced. 3G does not have the power to accept the speed itself, with the increase in the user, the bandwidth of 3G technology will decrease, no matter how high the speed of the net installed in the tower, 3G will no longer be able to handle the user.
      When you switch from 2G network to 3G network or switch from 3G to 4G, it means you have switched from small radio frequency to large radio frequency. Your downloads and uploads will pave the way for more volume and faster access. So not only do operators have to have high speed internet connections, they also have to have wireless technology to deliver them to the users.

      As the number of users on the mobile network increases, it becomes more and more difficult to handle the Internet. They have bandwidth but there is a flaw in the system that delivers them to the user. Suppose 3G technology allows 50 users to use the internet at a good speed from one tower, but if there are 500 users then you will not get good speed even if you have high speed bandwidth in the tower connection, because 3G itself does not have bandwidth capacity to handle 500 users.
      Mobile operators have no shortage of bandwidth or internet like the rest of the broadband ISPs, but the problem is with wireless technology, if they release unlimited PAN, users will increase download / upload a lot, which will cause new 3w or 4G technology bandwidth problems for users and Or not everyone will be able to get good speed on average. The main reason for slowing down the internet when you have a fair use policy is not allowing you to use more internet (depending on which package you have subscribed to) and another reason is to provide better speed for more users at that time. Now operators need to upgrade their network devices if they really want to handle more users, which is hugely expensive, so they control these issues by reducing bandwidth speeds.

      Why is your 3G / 4G speed slow?

      Everyone complains that they are not getting good speed even after being connected to 3G or 4G. You see, if you understand the above paragraphs well, you must understand that having more users reduces your internet speed, two things happen here, maybe the broadband connection to the tower has low bandwidth speed or there are so many users in your area that wireless technology has its own bandwidth. Can’t. It is important to keep in mind that 3G / 4G technology has its own bandwidth capacity and the lines installed in the tower have bandwidth capacity.
      For example, in a foreign country they get speeds up to 100+ megabits / second when they win 4, but we get an average speed of 20 megabits / second, so where is the problem? In fact, the problem this time is the tower’s broadband line, which means the operator does not have such a high-speed internet line. But 4G technology has enough bandwidth speed, so connecting a high-speed line to the tower will also increase your speed. Now you can’t say that the operator is not giving you 4G!
      Suppose you bought an 802.11ac router with speeds of up to 1300 megabits / second, but if your broadband connection speed is 5 megabits, then you get only 5 megabits. But this does not mean that your router technology is not an AC router. Robi is promoting their 4G network as 4.5G, now the term 4.5G is actually possible, it is not impossible, it means their network has the capacity to provide 100 megabits + speed but if you do not get that speed then they must have that amount There is no internet bandwidth or a lot of users so you are not getting good speed, but this does not mean that their network is not 4.5 GE. So, you understand, there is a difference between using 3G / 4G and how much speed you can get.

      Will unlimited mobile internet ever be possible?

      Let’s go back to the main point of today’s article, you must now understand why mobile operators can’t provide unlimited PAN. This is because 3G / 4G technology cannot handle as many users and bandwidth, and operators try to provide more user support without spending money on upgrading the network. But the question is, will we ever get unlimited mobile data? Does that mean mobile operators will ever offer that?
      Yes, that could happen in the future, but of course with the advent of 5G technology! Where 4G operates below 8 GHz frequency, 5G will be able to operate in the 30-300 GHz range. The higher the radio frequency, the higher the bandwidth speed. To support this huge radio frequency range, 5G will be able to handle huge data and secondly 4G will be able to support as many devices per meter as 5G will be able to support 1,000 more devices. This means that you will get high speed net in 5G, with the ability to handle many users, mobile operators will then be able to sell unlimited plans. Able to but how much speed you get will depend on how much bandwidth the operator has. If operators increase their bandwidth or simply install high speed broadband in their towers, you will get it too, as 5G will handle them comfortably.

      Hi everyone ☺️👋 I'm a tech lovers, and I want to share my experience, knowledge and thought to you for better understanding of technology. Koustav Paul B.Tech in Electrical Engineering

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