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Wireless Communication

This rapidly growing segment of the communication industry has the potential of providing high-speed high-quality information exchange between portable devices. Wireless communication enables several applications including multimedia Internet-enabled cell phones, automated highway systems, smart homes and appliances and videoconferencing, among others.

4,616 Questions

Who was the inventor of the first mobile phone?

The technology was invented in the 1920's which was in essence a very large walkie-talkie that could transmit 100's of miles. The inventor was Reginald Fessenden. The technology became handheld in 1946 thanks to engineer's from Bell Labs with ATT being the first carrier.

How to get free ringtones without texting?

Well you typically wouldn't be able to download a ringtone off of a texting plan alone, you would need a data plan (Internet). If you cannot get Internet access from your phone then see if your own carrier might have a promotional free ringtone download, they usually give you Internet access for their download.

Why do cell phone companies require a contract?

Three reasons: 1. Money 2. More money 3. Not losing money In the beginning, it was simply a source of revenue if a customer decided to cancel their contract- greed. (That part is my opinion) Here's the logical answer: These days, with all the competition, it's a way for the companies to recoupe the cost of that "free" or reduced phone that came with the sign-up. They reduce the cost of a desireable phone in order to get subscribers (i.e. Razor or Slivr for $80 instead of $200+). Note that when you cancel a contract, you are required to pay a relatively large amount of money. This ensures that they did not lose money by reducing the cost of the phone. Should you stay with them for the life of the contract, the companies have made enough revenue from you to pay for the phone and make a profit.

Whats a bd address as it asks for it on my phone for bluetooth?

bd address is some nummbers like this:

XX:XX:XX:XX:XX:XX

it is a 48Bit address that unique for each bluetooth device. its format as shown in below which follows the IEEE 802 standard. Lower Address Part (LAP): 24bits

Upper Address Part (UAP): 8 bits

Nonsignificant Address Part(NAP): 16 bits -LAP is some company assigned numbers. -UAP and NAP together forms company ids reference:

http://books.google.co.kr/books?id=srone6UtmiQC&printsec=frontcover&source=gbs_navlinks_s page 159

Do old trac phones have texting?

yes they do i have one with a black and white screen so yeah it does but its weird the way u send it and add a contact

How do you put in a fake mobile phone number and still get the PIN?

You can't. The PIN would be texted directly to that phone number, so unless it's your phone or a friend's phone, you'd have no way of knowing what it was.

Is the Walmart cell phone plan legit?

The SmartTalk plan (by walmart) is a pre-paid plan. It received some pretty decent reviews, and I know people who have it. Everyone I know who has it seems pretty satisfied.

How much do walkie talkies cost?

Walkie Talkies cost 20 to 100 dollars. You can use walkie talkies to talk to friends, talk to strangers on the same channel, and, my personal favorite, ghost hunt!

Is there really such a thing as fecal fetishism?

Although rare in the general population, coprophilia -- an abnormal, often obsessive interest in excrement, especially the use of feces for sexual excitement (according to the American Heritage Dictionary) -- is not uncommon in the S&M clubs. A fetish is any act or object that causes some degree of arousal or sexual stimulation. It can be clothes, shoes, someones hair, feet, the smell of feet, ears, panties, leather, silk sheets, etc. Someone with coprophilia may like to see or smell excrement or may be aroused by soiling his or her pants or a diaper. People who are into S&M (sadomasochism) associate pain with sexual arousal and enjoyment. They are not necessarily coprophiliacs.

How do you attach a file in hotmail on mobile phone?

You cannot attach a file directly from the hotmail app. What works on android phones, is to go to the gallery and select a picture you want to send. Then if you have a hotmail app installed, a little hotmail logo will appear above the picture, you click on that to attach it to the email.

Is there like a fake texting thing where you pretend im texting someone but im not?

i dont think so because every time i text some one and they talk to me the next day we continue our conversation we left off from texting.

How does mobile phones contacts virus?

in several ways-

1. receiving an already infected file it could a song, video file, pdf from another phone.

2. downloading infected contents from web e.g exe programs

3. connecting your phone to PC via usb and even transferring infected files to your phone.

How can you open the motherboard of micromax m2 mobile phone?

brother first open middele round keypad,a patta type connector u will be able to open,try it wth the help of a knife.after thet open the lcd glass in the body.open don portion cover of battery and also open upper black body where we use to insert sim,u will find two screw,open it and the push the pcb from downward to upward,u will be able to take the pcb out.itzz simple.try it and enjoy

Will a CDMA sim card work in a next g mobile phone?

There is no such thing as a CDMA SIM card, since CDMA phones do not use SIM cards.

How old do you have to be to buy cell phones?

There is no real age you need to be to buy a cell phone by itself. However to activate the phone with service from a cell phone carrier, you need to sign a contract which in most cases requires you to be 18 years old.

Why no 5 button of any mobile phone is specially marked?

The button number 5 is marked for the sake of blind people.it helps in detecting the other buttons.

How do you connect a WiFi enable Mobile phone to a WiFi enable desktop PC for internet?

Enable wifi in both PC n phone then PC will generate a uniqe gateway 2 get paired with mobile device it will ask for a password or encrypted ip address and then the mobile phone is connected to PC now ur PC which is having access to internet can be shared with the mobile phone over wifi.....

What modulation technique used in mobile phones?

Currently the mobiles use GSM(Geo Synchronous Mobiles ) and CDMA(Code Division Multiple Accesss) techniques. GSM inturn uses TDMA(Time Division Multiplexing) or FDMA(Frequency Division Multiplexing) or sometimes both to fit in the required criteria.