Mobile Websites Can Tap Into Your Phone's Sensors Without Asking. When apps wants to access data from your smartphone's motion or light sensors, they often make that capability clear. To qualify for the promotion, the promotional product must be pre-ordered and purchased from Mobile Phones Direct. Once customers receive delivery of the Handset they must fill in the claims form to claim their reward. Once a valid and approved claim has been made the reward will be delivered within 45 days. Jul 22, 2019 Mobile data gives you an Internet connection anywhere as long as you’re connected to a cellular network. What uses mobile data on a cell phone? Think apps, your Internet browser, email and syncing to the cloud. Mobile data usage is measured in megabytes (MB) and gigabytes (GB). There are approximately 1,000 MB in 1 GB of data.
A mobile phone (also known as a hand phone, cell phone, or cellular telephone[1]) is a small portable radiotelephone.
The mobile phone can be used to communicate over long distances without wires. It works by communicating with a nearby base station (also called a 'mobile tower') which connects it to the main phone network. When moving, if the mobile phone gets too far away from the cell it is connected to, that cell sends a message to another cell to tell the new cell to take over the call. This is called a 'hand off,' and the call continues with the new cell the phone is connected to. The hand-off is done so well and carefully that the user will usually never even know that the call was transferred to another cell.
As mobile phones became more popular, they began to cost less money, and more people could afford them. Monthly plans became available for rates as low as US$30 or US$40 a month. Cell phones have become so cheap to own that they have mostly replaced pay phones and phone booths except for urban areas with many people.
In the 21st century, a new type of mobile phone, called smartphones, have become popular. Now, more people are using smartphones than the old kind of mobile phone, which are called feature phones.
History[change | change source]
Mobile phones in the 1950s through 1970s were large and heavy, and most were built into cars. In the late 20th century technology improved so people could carry their phones easily.
Although Dr. Martin Cooper from Motorola made the first call using a mobile phone in 1973 (using a handset weighing 2 kilograms), it did not use the type of cellular mobile phone network that we use today.
The first cellular mobile phone networks were created in 1979 in Japan. Now almost all urban areas, and many country areas, are covered by mobile phone networks.
Technology[change | change source]
A cell phone combines technologies, mainly telephone, radio, and computer. Most also have a digital camera inside.
Cell phones work as two-way radios. They send electromagnetic microwaves from base station to base station. The waves are sent through antennas. This is called wireless communication.
Early cell telephones used analog networks. They became rare late in the 20th century. Modern phones use digital networks.
The first digital networks are also known as second generation, or 2G, technologies. The most used digital network is GSM (Global System for Mobile communication). It is used mainly in Europe and Asia, while CDMA (Code-Division Multiple Access) networks are mainly used in North America. The difference is in communication protocol. Other countries like Japan have different 2G protocols. A few 2G networks are still used. 3G are more common, and many places have 4G.
The radio waves that the mobile phone networks use are split into different frequencies. The frequency is measured in Hz. Low frequencies can send the signal farther. Higher frequencies provide better connections and the voice communications are generally clearer. Four main frequencies are used around the world: 850, 900, 1800 and 1900 MHz. Europe uses 900 and 1800 MHz and North America uses 850 and 1900 MHz.
Today there are mobile phones that work on two, three or four frequencies. The most advanced phones work on all frequencies. They are called 'world' phones and can be used everywhere.
Shapes[change | change source]
There are different kinds of phones. A flip phone flips open, and is best for calling. A bar phone is shaped like a candy bar, and the keys and screen are on one face. A slate phone is a phone that has almost no buttons, and uses a touchscreen. Most smartphones are slates. A slider phone slides on rails. It can slide out number keys or a mini keyboard, but some do both. A swivel spins on an axle.
How mobile phones work[change | change source]
When a mobile phone is switched on, its radio receiver finds a nearby mobile phone network base station, and its transmitter sends a request for service. Computers in the base station check if the phone is allowed to use the network. The base station covers an area called a cell. A phone can move between different cells, but will only communicate with one cell at a time. This is why mobile communications are sometimes called cellular communications.
Once connected to a station, the mobile phone can make calls. Because the network knows that the phone is connected to that particular cell, it can also route calls to the mobile phone. Sometimes the radio connection to the cell is lost, for example when you go underground. This means the phone cannot make or receive calls until the connection is made again.
Networks and payment[change | change source]
The network is the company that provides the phone service. In most areas there will be more than one mobile network. Customers choose networks based on how well the different networks work in their area, or by price.
There are two main ways to pay for mobile phone calls:
- Contract
- If you pay by contract you will pay the network money every month so that you can make calls. Usually you can talk for a lot of time for the monthly fee, but if you do not use the phone a lot you still pay the same money.
- Pay as you use
- If you pay as you use, you will pay for a fixed amount of call time credit which you then use up when phoning people. Once the credit is used up you must buy some more to use the phone. This can be cheaper if you do not use the phone a lot.
Mobile phones use different technical standards. GSM phones need a separate microchip, called a Subscriber Identity Module or SIM card, to work. The SIM has information like the phone number and payment account and this is needed to make or receive calls. The SIM may be supplied by the same company as the phone, or a different one. Sometimes you can change the network by using a SIM from another network, but some companies do not want this to happen and they lock the phone so that you have to use their SIM.
The others have a special radio inside them that only makes phone calls when the phone is activated. When someone buys a contract, the network gives them a code, that if they enter it into the phone, the phone will then make calls. It is usually impossible to switch to a different network's code on this type of phone. The majority of these CDMA phones are used in the United States and nearby countries.
Smartphones[change | change source]
Mobile Phones Uk
- Main page: Smartphone
A majority of new mobile phones from the 21st century are smartphones. These phones are basically small computers. Besides calling, they can be used for email, browsing the internet, playing music and games, and many other functions that computers can perform.
Most smartphones run a common mobile operating system. This allows developers to make mobile apps that work on many different phones without needing to change the code. Examples of smartphones include Apple'siPhone (which uses iOS software) and Samsung's Galaxy series, one of many phones that use the Android platform made by Google.
Mobile case[change | change source]
Cases, which are designed to attach to, support, or otherwise hold a smartphone, are popular accessories. Some have a keyboard built in. Case measures are based on the display inches (e.g. 5 inch display). There are different types:
- Pouches and sleeves
- Holsters
- Shells
- Skins
- Bumpers
- Flip cases and wallets
- Leather case
- Screen protectors and body films
In the 21st century, a new type of mobile phone, called smartphones, have become popular. More people are using smartphones than the old kind of mobile phone, which are called feature phones covers[2]
Holsters are commonly used alone for devices that include rubberized padding, and/or are made of plastic and without exposed rigid corners. Heavy duty cases are designed to protect from drops and scratches.
Related pages[change | change source]
References[change | change source]
| Wikimedia Commons has media related to Mobile phones. |
Mobile Phones Definition
- ↑Ulyseas, Mark (2008-01-18). 'Of Cigarettes and Cellphones'. The Bali Times. Retrieved 2008-02-24.
- ↑Lunden, Ingrid (2 June 2015). '6.1B Smartphone Users Globally By 2020, Overtaking Basic Fixed Phone Subscriptions'. Artgiri. Archived from the original on 28 January 2018. Retrieved 6 February 2018.
Wondering how to check the mobile data speed of your cell phone? This mobile data speed test evaluates the internet speed of your cell phone or smartphone, as well as additional connection details such as upload/download speeds, packet loss, ping, streaming latency, and jitter. This test also provides detailed feedback on the type of functions your mobile data connection is capable of carrying out. Examples of functions reported include buffering of live video on popular video apps and sites such as YouTube or Hulu, mobile gaming, app usage, mobile hotspot, and more. Unlike other cell phone data speed tests, our test does not require you to download an app, nor does it require the use of Java or Flash. Our test is built in HTML5, so it works on any device, right in the web browser. You can check your mobile data speed test by running the test now, but please keep in mind it may take 30 seconds or more to present you with your results. Do not close the browser tab or put your phone to sleep while the test is running.
Steps To Ensure Your Cell Phone Data Connection is Solid
The main reason you're likely using this test is that you're interested in finding out what your mobile data speed is in your current location, and whether it is robust enough to use your phone's internet connection for whatevers network currently is. You may get better data speeds in the middle of the night when few other people are using their devices.
Analyzing Your Mobile Data Speed Test Results
After the execution and finishing of the speed test, users are provided many different results to measure particular criteria. Listed below is a summarized explanation of what your results are specifying, depending on your residential or business broadband setup:
- Download Speed: Instead of measuring pure speed, this measurement displays how much can be downloaded to your device per second.
- Upload Speed: Similar to the rate of downloads, this isn't a pure measurement of speed, rather it is a simple indication of the amount of data that can be uploaded per second from your mobile device to the web.
- Ping: Measurement of the length of time one packet of data takes to transfer from one end point to another.
- Jitter: Measurement of multiple ping results occurring sequentially. A score close to zero signifies a good jitter result.
- Bufferbloat: This is an executed test of latency, occurring whenever low bandwidth is experienced during a connection. This is normally achieved through a check of bandwidth being performed in order to optimize the speed of the connection.
- Packet loss: This is a measurement test that determines the number of packets, and how many reach their destination when sent from one device to another. 0% would be the best percentage score for how many packets lost.
If your data speed is not as fast as you'd like it to be, be sure to compare cell phone plans at Wirefly so that you can find another carrier with acceptable data speeds in your area and check out the best cell phone plans of the year.