6 Biggest Side-effects Of Smartphones.

     We all loves our smart phones and Many of us are addicted to our phones.
We only see, Its benefits.
But,
Do you know?
Harms of smart phones, and its dark side.
Each smart phone user Need, To Know-

This is series and important topic.
     In many researches, Researchers found- By using smart phone for a long time, a sharp bone grows on the back of heads and it is look like a horn.

     To prove it, Doctors do some x-rays of mobile addicted persons. And they found a bone on the back of their head.

     Peoples see only, The uses of the smart phones and ignore their side effects. We all need to know about it, Lets see some side effect of smart phones-

1. Smart Phone Cause Many Diseases-

     Smart Phone emits radiations and we all know they are very dangerous for us. Our body absorb some part of radiations and this is not good for us.

Mobile Phone has more germs and bacteria then a toilet seat.
Because,
    We use smart phone almost on all the places and germs of that place are collected on our phone. We don't clean our phone regularly and many times you use it while then bacteria can enter in your body and You may get diseases.

2. Eye Damage -

    All the devices ( T.V., Mobiles & Computers) projects blue light in our eyes and Blue light is very dangerous for our eyes.
If you use these devices in dark areas or at night for a long time, Then it will definitely affect your eyesight.
And it is also responsible for Dark Circles.

3. Less Sleep And  Study Distractions -

Blue light of Mobile phone are responsible for lack of sleep. Mostly young generation and mobile addicted peoples are suffering from Lack of sleep.
If you take less sleep, Then you feel lazy in the morning and if you are a student, Then it is very difficult for you to focus in studies.
   You are easily distracted by smart phones because, Your brain need comfort and rest and you spend your study time on mobile phones.

4. Nomophobia -

This is a diseases or a name given to those peoples who are addicted badly, from smart phones.
They can't live without their phone, They are very sensitive for their phone and, This is a disease.
Mostly, Young generation is suffering from this problem because, They are addicted to it.

5. Hearing Loss-

     All the smart phone users loves music, and they use headphones with high volume to listen music.
If you use headphones for a long time at high volume, This will definitely lead to some hearing issues.
You phone give you warning,

 When we cross safe sound limit But, we ignore it.
Because,
We love to listen music at high volume. This will affect our hearing.

     You can notice some other issues after using smart phone for a long time.
Back pain, Neck pain & head ace.

If we use our Smart phones in a limit then they are helpful for us.
But,
   If we cross the limit, they will harm us mentally and physically.
So, It is completely depends on you, How you will use them.

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Fast Charging? Explained...

     You all know, Fast charging in our phones is available from 5-6 years. Before this technology, Our phones takes a lot of time(3-4 hours)to charge. So, their charging speed is very slow.
     Today, We spend our most of the time on phone and battery consumption of our phone is increased.

   We need to charge our phone fastly to use it again.
   So, Fast charging is developed, And it works on a simple concept.

  Your charger have to supply more power to the phone and your phone will handle it and battery of your phone is charged.
But,
  This is not as so simple.
     If your does not support fast charging and you try to charge it with a fast caharger, Then you have to face problems in your device. To prevent this problem fast chargers provide power to your phone, which your phone can handle easily.

   All the fast chargers of different brands work on this concept.

Precautions-

     If you use a fast charger then, It is necessary to use an appropriate quality charging cable.
If quality of cable is not good and you supply more current from it, The charging cable can't handle it and may be your cable burn.

   If you charge your phone fastly then heat is despite from. You can notice, Your phone become warm when you use fast charger
(Because it's heat efficiency is not 100%,  While transferring energy,  some amount of electrical energy convert into heat)

If your battery temperature is increase, it will affect your battery life.
But,
This is very convenient way to charge your phone.

 Many companies claim that their charger can charge  0-50% in 30 minutes-

   If you charge your phone from zero it takes less time to charge.
But,
   If it start charging from 50-60%, Then it will take more time.
Because,
    When charge in the battery increase its charging speed decrease.

   Today, Cell phone manufacturer are trying to make a charger which can charge your phone in 1or2 minutes.
It can possible when-

• We deliver more power.
• Internal circuit of phone and battery can handle the power and absorb it.

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Wireless Charger? Explained...

Today, Wireless charging is very commonly used in mobile phones.

WHO DISCOVER IT.

     You definitely heard about Nikola Tesla,  He is a great scientist. The concept of wireless charging is introduced by Tesla in 1902.
     He couldn't convert this idea in reality, Because he has very low budget.
     After many researches, Now we can see wireless charging in our phones.

Many peoples thinks, That Samsung introduced wireless charging in their phones.
But,
     It is not true, A company Palm introduced wireless charging in their phones.(They introduced this, 10 years before Samsung)

• How wireless charging works?
• Do all the phones support wireless charging?

Wireless Changing:-

There are two concepts of wireless charging.
➡Conduction
➡Induction

Conductive type wireless charging:-

     In this charging surface of charger and back panel of your phone are electrically conductive.
     You have to attach your phone properly to the charger and works like a wired charger.
So, This is not perfectly wireless charging.

Inductive type wireless charging:-

     This is based on very interesting concept. In this method of charging you can find a coil, Below the surface of your charging pad and you can also find a coil inside the phone.

Coil- When you rotate a flat wire in a circular pattern, making a spiral.

How it works.

     The coil get energy from the socket and when we take another coil near to it, Then due to induction  Coil transfers electrical energy  another coil wirelessly.                           
     You have to put your phone normally on charging pad and it starts transferring energy to your phone.

Is your phone support wireless charging:-

     Yes you can charge any phone wirelessly. You can buy an electric coil(plate) for your phone. Attach it with your phone and fold it in the back side of the phone and you can use a mobile cover to hide it.

So, You can also enjoy wire-less charging in your phone easily.

     Wireless charging is not much energy efficient(Your charging pad don't transfer 100% energy to your phone)
   So, You will see less charging speed.
But,
     At the same time, It is very convenient to use, You don't have to use any cable for charging. Simply place your phone on charging pad and your your phone get charged.


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Full Signal - No Calls(Call Drops)?? Explained...

WHY YOU NEED, TO READ IT?

     We all use mobile phones for calling. You had definitely noticed that, While you are on a phone call sometimes your call is disconnected automatically.
Why, This is happen?

     Imagine, If you are in an emergency situation and may be you have to face Call Drop, and you can't re-connect your phone. This can become a big issue for you.     

     In this blog, You come to know everything about Call Droping.

• Why you face Call Drops?
• Myths of Call Drop?
• Signal Strength?

      

 Why you face Call Drops:-

1. You are getting weak signals.

     (Your house/Work place can be, So far from cell phone tower and radio waves can't reach to you)

Interesting Facts -
     In ideal situations range of any cell phone tower is 45miles (72 km.)
But,
  In real life conditions, You will get signals at its half distance.(because of obstacles, Which are in our surroundings)
Dead Spots:-
     You can find some spots in your house or anywhere, Where signal strength is very weak, in a very small area.

2. Rain can affect your signal strength:-

(Because water present in air can became an obstacle to radio waves)

3. Temperature can affect your signal strength:-

( When temperature is increased, Water vapours present in air decrease, and If we decrease temp. moisture in air increase. And you know water can affect signals)

     In forests, There are alot of moisture is present in air. So, you get very poor signal strength in forests.

4. When your tower is over-crowded:-

     (When many peoples use your tower at same time, Then capacity of tower is overloaded and you can face Call Drops).

Myth about Call Drop:-

     Their is also a myth in peoples mind, that high speed winds (storm) affect their Mobile's signal strength.
But,
     It is not true, Air will not affect your signal strength.

Signal Strength:-

     When you see, On the top(Left or Right) of corner of your Mobile's screen. You find some vertical lines.(1 to 5 )

     Many of peoples think, that these lines shows your signal strength .
But,
   It is not true,  They shows how much you are close to the tower.
   (If you are close to a overcrowded tower, Than their are many chances that your call can be drooped).

     If you really want to know your signal strength.
Then,
Go in settings of your Android Phone➡About Phone and then, In Status.
     You will see a number which is between -20 to -120 (Approx.) and its unit is dBm.

     This shows the actual strength of signal at the real time .
Normally,
     You see it is nearby to 50-60dbm. When this number is close to zero your signal strength is strong and when this number is away from zero your signal strength become weak.


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Where are Smart phone Antenna? - Long Anteena VS Short Anteena.

Why You Need, To Read It?

     You have definitely see old mobiles with a large Antenna at the top, and those phones was very big in size and very heavy.
But,
     Now our phones are slim, light weight with amazing features.

• Is their any Antenna in our phone

     Answer is - YES

     In starting days of mobiles, its components are very big in size. Antenna technology of that time is very simple. So, Antennas of those phones are very big.
And it is impossible, to fix such a big Antenna inside the phones.
But,
     We know, By the time technology shrinks itself.
     Size of mobile phone components is reduced, and Antenna technology is also improved. So, size of  Antennas are also decrease.
And due smaller in size we are able to fix it inside our phone.

Different Antennas Length For Different devices:-

      You can see Antenna's, in those devices which can receive or transmit signals. ( Radio, Routers and phones etc.)
     Length of an Antenna is depends on, of which frequency of signals you want to receive or transmit.
     Length of an Antenna is between 1/2 and 1/4 of wavelength of any frequency.(When we increase frequency, wavelength will decreases)

     We use large Antennas in Radios because they receive low frequency signals. (High wavelength)
But,
     Mobile Antenna's are small in size (6-7 inches). Mobile phone works on high frequency.( Low wavelength)

     Now, you will definitely think that, why don't we see any Antenna in our phone. Generally size of our phones are 4-5 inches,  but size of Antenna is large (6-7 inches).

Where Is Antenna?

      If you have an stylish & slim phone. You will definitely find it ugly, when size of Antenna is larger then your phone.
So, we need to reduce Antenna size.
     Now, a new concept is come, which is Printed Antenna.

Printed Antenna :-

    Printed Antenna's are printed inside the phone with a metal strip in a zig-zag pattern.
    So,  they will take less space with the same length.

     Nokia introduced printed Antenna (1998-99). They implement this Antenna in their phone.

     Now, in modern phones, you can notice some cutouts on the body of the phones.(metallic body phones)

     In this concept your phone's back panel is act as an Antenna,  and all the things work smoothly.

    In upcoming 5G technology, frequency of signals will be increased and wavelength of signals decreases and size of Antenna will also decreases and then, we are able to reduce size of mobile phones.

   Now, you can imagine a stylish, latest phone with an Antenna. It look very ugly and it will be in-convenient to use.
So, by doing some improvements in technology, we don't have to face these big Antenna's .
Printed Antenna's works efficiently and smoothly.


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World's First Mobile Phone - Motorola DynaTAC 8000x

Why you need, To read it?

     Today, we all are using mobile phones. We have many options in mobile phones & we buy a phone for us with a lots of specifications ( high mega pixels, HD display, high speed etc.)
But,
     Do you know about worlds 1st phone,  and its specifications?
     Journey of mobile phones started in 1973, and after slow progress of many years, we got our smart phones.

     On 3rd April, 1973 . Motorola showcase their phone in a event. This phone is only a prototype of wireless phones. At that time people uses land line phones and car phones( car phones are attached with cars and they are not convenient for use).

     There is no any concept of truly wireless phone till 1973,
But,
     Motorola introduced a prototype of this technology.
     Their is no any display in their phone and buttens are simply alliens in two rows.
     In commercially launching of this phone Motorola takes 10 years more and they have to clear a lot of certification at that time. Motorola invests 100 million $ in this project.

World's First Smart Phone -

     On 6 march, 1983 Motorola launched worlds 1st commercial mobile phone.
       Motorola DynaTAC 8000x
It is only an abbreviation, its full name is-          Dynamic Adaptive Total Area Coverage 8000x
This defines the concept of phone.
     His phone is not working on GSM because GSM is launch, 10 years leter from this phone. 
     This is a wireless radio device. Which can transmit two way signals, you can send your voice and also hears another voice.

Specifications :- 

1. It has no any screen, and its buttons are simply aliened in two rows. 

2. It's weight is 790 grams (approx). It is very big and heavy phone with a big antenna at the top.
(Peoples carry this phone in a briefcase, due to its size and weight.)

3. It's standby time is 6 hours.(If you not use this phone then, battery will also drain in 6 hours.).It takes 10 hours to recharge.
   This phone also support fast charging but, you have to buy an extra charging accessory for it, which can charge it only in 1 hour.
   It is very fast as compared to its standard charging time(10 hours).

4. You can store only 30 contacts in it.

5. Its Price was 3995$(dollars) in 1983, today it is equal to 9800$.
So, it is very expensive.

Calling Planes :-

     You have to pay 50$ per month, which is fixed.

• If you make calls from 9 am to 5 pm, you will charged 40 cents per/minute.
• If you make calls from 5 pm to 9 am, you will charged 24 cents per/minute.

This is all, about world's first mobile phone.


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Artificial Intelligence And Machine Learning?

 Why you need to, to read it?

Many peoples remain confused between Machine Learning and AI. Some are unknown to it, it is necessary to know about it, because this technology will be introduced to us, very soon.
Machine learning is a part of Artificial Intelligence, but both are different-

Machine Learning:-

     The computer has to learn through algorithms and historical data and became an expert in a specific task. By the time, it add its own experience in the algorithms and keep improving in a specific task. This system can perform only that function, for which it is programmed.
For ex:-
       (If you program a system for playing
Ludo( a board game ), then it becomes master only in this game. If you use this system for playing chess,  then it will completely fail in doind it.)
     So, machine learning is mastery of system in a specific topic.

Artificial Intelligence(AI):-

     AI system is very intelligent and it can perform many tasks like humans.
     It has its own understanding, thinking and creativity like us.
AI system analyse many things in a pattern and then take actions from its own understandings.

AI is divided into two parts-

1. Weak AI :-

    It is not much powerful and it is working on limited scales.

2. Strong AI :-

      It is very strong and high tech, its scope is wide. It is very intelligent like humans.

Lets take the the same example.
     (In strong AI, if you program a system for playing Ludo, then if you use it for playing chess. Then it can try for playing chess and may it will learn it in some time due its intelligence.)
     This AI is very high-tech. We hardly see it in our daily life, But in future it will be very common and definitely we will use it for our convenience

   Now a days, some of companies of cell-phones & T.V. tell us that their product is working on AI. But this is not true, in fact they uses machine learning technology in their devices.

Now, you can differentiate both easily-

     Machine learning can perform only some specific tasks.
But,
     AI is designed to perform multiple tasks & had a capability to think like a human.


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What Is CAPTCHA ?, I Am Not A Robot?, Spam & AI.

WHY YOU NEED, TO READ IT?

     When you visit to a website or make account on Google or any other website, You have fill to this type of Captcha.

1. Why websites show you captcha?
2. Is it really works?

CAPTCHA :- 

Full-Form Of Captcha-
   Completely
   Automated
   Public
   Turing test to tell
   Computers and
   Humans
   Apart.

    Captcha is designed in 2003, to stop spaming with the help of bots ( AI ) and script.
     (because, they can destroy any website and its database by registering multiple account on website and G-mail account.)
This technology is designed, to find that, you are a robot or a human.

How It works-

     While making any account, websites shows you some letters (a, b, c....).
     Which can be understand by humans easily. The success rate of human in any captcha is 80% .
   But, for computers it is only 0.01%.
It is almost impossible for a computers to solve a captcha.

Concept Of Re-Captcha :-

     A company come in market, to improve captcha, and named it re-captcha.
   Google also face this problem of spaming in its search engine & G-mail accounts. To solve this problem, In 2009, Google buy Re-captcha company, So, in 2009 Re-captcha is sold to Google and
   Google wants to improve captcha.
Because,
1. Sometime it is very difficult for peoples to fill it.
2. It wastes our time also.
     So,  Google introduced a new  captcha,
Which is called  No-Captcha or Re-Captcha.

No-Captcha :-

     Now a days, you can see these type of captchas on Google.you have to tick only on I'M NOT A ROBOT

      If you see a green tick mark their, you will pass this level.
     Now a question can come in your mind.
Robots and Script can also click there.
But,
     When you click there, a lot of information ( your IP address, Country & City location and your courser & scrolling movement on that page) goes from your device to the Google sever.
     With the help of Artificial Intelligence (AI), they can easily check from your behaviour that you are a robot or a human.
     If Google found your behaviour 95% of a man,  then you will automatically proceed to the next level.
     If Google found your behaviour l5-10% of a robot, they will stop you and show you images and ask you to point a Bus, Traffic light etc.
     If you pass this level, next time you can easily login to any website from your device.

    So,  a new captcha is formed,  in which you don't have to do anything except
Only follow their instructions.


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Attention, Your Device May Explode ! 😨 6 Reasons Of Phone Exploding

Why You Need, To Read It                     

     Attention, your smart-phone can blast,
If you are doing these mistakes please avoid them.                                                             
     Smart-phone exploding is not a rare thing,  I am sure you already heard about it.
Your device can explode due to over-heating.

    I will tell you some points, you can use them to protect your device & your self from blast.

1. Use original Charger & USB cable.

    Because,
         (When you buy a cheap charger or a charging cable for your device from a local market, it  will definitely harm your device,  because it has no safety features & they are definitely cheap in built quality.
   So always buy a charger or its cable from a trusted brands.
   If you have already a local charger, Don't use it continuously for a long time.)

2. Don't use your device for a long time, while it is on charging.

    Because, 
         (If you are using your phone for a long time while charging, you can notice that your device become warmer. Because your device is charging and discharging at the same time rapidly.)

3. Don't attend any call for a long time         while charging your device.

    Because, 
          (You can attend any call for short time without any issue, but if you attend phone calls for more than 30 minutes, It may damage your phone.
     Because without detach the cable if you move your device, it will stretch the wire which can cause short circuit in your device.)

4. Don't use/ put your phone on warm area.

    Because, 
         (When you use your device in such areas, Heat directly went in your device & your device may explode.)

5. Don't use phone cover while charging

    Because, 
         (It traps heat, which is evolved in your device while charging.)

6. Due to some manufacturing mistakes in your mobile or in its battery.

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Why Storage Device Have less Storage, Than Advertised ?? 😡😡😡

Why You Need, To Read It ?

      When you buy a new smartphone or any storage device ( Memory Card, Hard-Disc, Pen-drive etc. ) . You will definitely notice about its storage ( for example it is 16 GB ) But when we attach it with your device, we found it less ( Approx. 14.9 GB )

• Why this happen ?
• Are these companies making fraud to us ?

 Lets Find Out :- 

     To understand this problem we have to learn about Memory Unit.

Memory Unit :-

       When you buy a new storage device ( Phone or Memory Card ) . How you know about its memory status/limit ?

Manufactures mention the storage capacity ( 4, 6, 8, 16 GB etc.) on the device

You can find out the storage capacity through memory units .

1Bit                 =        Binary Digit ( 0 & 1 )

8Bit                 =        1 Byte

1024 Bytes    =        1 KB  ( Kilo Byte )

1024 KB         =        1 MB ( Mega Byte )

1024 MB        =        1 GB  ( Giga Byte ) 

1024 GB         =        1 TB  ( Tera Byte )  

1024 TB         =        1 PB  ( Peta Byte )

1024 PB         =        1 EB  ( Exa Byte )

1024 EB         =        1 ZB  ( Zetta Byte )

1024 ZB         =        1 YB  ( Yotta Byte )

1024 YB         =        1 Bronto Byte

1024 Bronto Byte   =      Geop Byte

Smallest unit of memory is Bit

After that Byte, KB, MB, GB and so on .