How Mobile Phone Work( cell phone deals )
used of call phone 
The current electronic product that is making a splash in our daily lives is undoubtedly "mobile phone", some call it "cellular phone". But how does this phone work? What is the difference from a normal phone? Today I will show you the working method of mobile phone in general
First of all, a mobile phone is a "rodeo" In the beginning, mobile worked like a normal phone, but now its use is spreading a lot Below are some of its uses
Mentioned -
1. Saves phone numbers and addresses
2. Keeps calendar and to-do list
3. Keeps an appointment and his alarm
4. Calculator
5. The benefits of email
. The convenience of viewing web pages
. Ordinary games
. Also works as GPS, so where are you
You can also see his map 6
9. Camera: Many mobile phones have digital cameras
You can take a picture and send it to others by mail (mobile phone )
Besides, mobile phones with more facilities are coming in the market
Introduction: When exactly did the mobile phone start? It is difficult to calculate it However, the first two technology ancestors are rodeo and telephone 7 Today's mobile phone is the combination and modern look of these two The telephone was invented by Graham Bell in 18 and 17 years later in 1794 by Marconi Radio.
Before mobile phones, many people used radio phones in their cars for mobile communication But due to its large size, it could not be easily moved around by hand And usually it used to communicate with the central antenna through only 25 channels This means that the transmission capacity of a radio phone should be about 40 to 50 miles And the number of channels
Due to the low number of people could not use it at once Let's see how the current mobile phone works Nowadays a mobile company divides a city or place into many cells Each cell is usually equal to 10 square miles in hexagons and each cell has a base station. And in each cell you can talk at 800 frequency ৷ Although a city needs many towers to talk on a mobile phone, it is now less expensive and more commercial due to the large number of users.
6 is successful Each city has a central office that communicates with base stations or towers These central offices are called Mobile Telephone Switching Office (MTSO) Cell mobile phones and base stations using low powere transmissins As a result, mobile phones can run on low-capacity batteries, which is why today's mobile phones are so small, and will be even smaller in the future.
When we turn on the mobile, it receives the SID (System Identification Code) through the control channel and matches it with the inside of the mobile phone. It also communicates with MTSO The central office keeps the location of the mobile phone in a database That is, when you are in a cell in the city's Fitr, it is in the database of the Central Office Whenever someone calls you, this central office pulls out of its database which tower you are near, and communicates with the two by communicating from that tower to the frequency of your mobile. And you can talk
Another great advantage of mobile phone is that you can talk even if you are running in a car or something else When you move from one cell to another as you speak, the distance from the tower you are currently using increases as it connects to another tower, allowing you to move from one place to another.
You can continue your conversation without any worries
Even though the mobile looks small, it can do so much in a moment because today's mobile has become so smart because of the DSP (Digital Signal Processor) inside it!
What is a duplex channel?
Mobile phone using duplex channel 7 You may be a walkie-talkie that police sergeants use This walkie-talkie uses single channel 7 As a result, it is only possible to talk or listen It is not possible for both of them to talk and listen at the same time For example, in Wakitki, the sergeants say the word over when they have finished speaking Hearing that, the other party then spoke But
Due to the use of DuPay-X channel on mobile phones, you can talk and listen at the same time as on a phone.
What is GSM?
GSM is an international standard that is widely used in Europe, Asia, America, Africa and Australia. The prevalence of this GSM in Bangladesh is very high Grameen Phone also uses this GSM GSM ranges from 900 MHz to 1600 MHz in Europe and Asia and 1900 MHz in the US. If you want to buy a GSM phone and use it in Bangladesh, you just need to buy a SIM card (Subscriber indenification module). This SIM card basically looks like a small chip, inside which the mobile company's connection ID and user information are stored. The result is that
Insert your SIM card in any set and it will work as your instant
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