Things You Never Knew Your Cell Phone Could Do

Things You Never Knew Your Cell Phone Could Do

Viral message purports to clue readers in on a number of little known tips and tricks for mobile phone use, including dialing one hundred twelve to access a worldwide emergency network.

Viral text / Forwarded email

Sep. Two thousand five (numerous versions)

(see details below)

Email text contributed by Greg M., Feb. 15, 2007:

THINGS YOU NEVER KNEW YOUR CELL PHONE COULD DO.

There are a few things that can be done in times of grave emergencies. Your mobile phone can actually be a life saver or an emergency device for survival. Check out the things that you can do with it:

The Emergency Number worldwide for Mobile is 112. If you find yourself out of the coverage area of your mobile; network and there is an emergency, dial one hundred twelve and the mobile will search any existing network to establish the emergency number for you, and interestingly this number one hundred twelve can be dialed even if the keypad is locked. Attempt it out.

Subject: Have you locked your keys in the car?

Does your car have remote keyless entry? This may come in handy someday. Good reason to own a cell phone: If you lock your keys in the car and the spare keys are at home, call someone at home on their cell phone from your cell phone. Hold your cell phone about a foot from your car door and have the person at your home press the unlock button, holding it near the mobile phone on their end. Your car will unlock. Saves someone from having to drive your keys to you. Distance is no object. You could be hundreds of miles away, and if you can reach someone who has the other "remote" for your car, you can unlock the doors (or the trunk). Editor’s Note: It works fine! We attempted it out and it unlocked our car over a cell phone!"

Subject: Hidden Battery Power

Imagine your cell battery is very low. To activate, press the keys *3370# your cell will restart with this reserve and the instrument will showcase a 50% increase in battery. This reserve will get charged when you charge your cell next time.

How to disable a STOLEN mobile phone?

To check your Mobile phone’s serial number, key in the following digits on your phone: * # zero 6 # A fifteen digit code will show up on the screen. This number is unique to your handset. Write it down and keep it somewhere safe. When your phone gets stolen, you can phone your service provider and give them this code. They will then be able to block your handset so even if the thief switches the SIM card, your phone will be totally worthless. You most likely won’t get your phone back, but at least you know that whoever stole it can’t use/sell it either. If everybody does this, there would be no point in people stealing mobile phones.

Cell phone companies are charging us $1.00 to $1.75 or more for four hundred eleven information calls when they don’t have to. Most of us do not carry a telephone directory in our vehicle, which makes this situation even more of a problem. When you need to use the four hundred eleven information option, simply dial: (800) FREE 411, or (800) 373-3411 without incurring any charge at all. Program this into your cell phone now. This is the kind of information people don’t mind receiving, so pass it on to your family and friends.

Beware forwarded emails suggesting esoteric tips and tricks "you never knew." Most of the claims in this message are either false or have limited applicability in the real world. We’ll examine them one by one.

CLAIM: The worldwide emergency number for cell phones is 112.

Not fairly. one hundred twelve is the Europe-wide emergency phone number. Across most of the European Union and some neighboring countries, dialing one hundred twelve will connect callers to local emergency services. The system doesn’t include North and South America, Asia, or Africa.

According to some sources, many, but not all, cell phone models are pre-programmed to redirect calls made to any of the most common emergency numbers (e.g., 911, 999, 000, 112) to the decent local services regardless of the caller’s location. And many, but not all, cell phone models and service providers will permit the most common emergency numbers to be dialed even if the caller is outside his or her regular service area, or the phone lacks a SIM card.

However, no mobile phones can put through calls, emergency or otherwise, from locations where no cell service exists at all.

Within the U.S., dialing nine hundred eleven remains the most direct and reliable way of contacting emergency services regardless of what kind of phone you use. Don’t dial one hundred twelve unless you want to play Russian Roulette with your life.

CLAIM: Unlock a car door with your cell phone and a spare remote key.

False. As discussed previously in these pages, cell phones and remote keyless entry systems work on entirely different radio frequencies. Therefore, cell phones are incapable of re-transmitting the signal from a remote key to unlock a car door.

CLAIM: Press *3370# to access ‘reserve battery power.’

False. On some Nokia phones, users can punch in special codes and toggle inbetween speech codec modes to 1) enhance voice transmission quality at the cost of diminished battery spectacle, or Two) enhance battery spectacle by decreasing voice quality. Evidently, some users have misconstrued the latter as "tapping into reserve battery power." On that score the email is doubly erroneous because *3370# is the code for enhancing voice quality — so using it actually decreases battery life!

CLAIM: Press *#06# to disable a stolen cell phone.

Not exactly. On some cell phone models, but not all, pressing *#06# will cause the phone’s 15-digit International Mobile Equipment Identity to be displayed. Some service providers, but not all, can use that information to deactivate the handset. In any case, it isn’t necessary to supply an IMEI number to cancel your cellular account in the event of theft; simply call your provider, give them the suitable account information, and tell them the phone was stolen.

CLAIM: Make four hundred eleven calls on your cell phone without charge by dialing (800) FREE 411.

Basically true (see previous comments on Free 411), tho’ cell phone users may still incur a charge for minutes used, depending on the specifics of their plan.

Sources and further reading

Information about the one hundred twelve emergency number in Europe

Unofficial listing of user codes for Nokia phones

Things You Never Knew Your Cell Phone Could Do

Things You Never Knew Your Cell Phone Could Do

Claim: List details five little-known but useful functions associated with cell phones.

Example: [Collected via e-mail, February 2007]

THINGS YOU NEVER KNEW YOUR CELL PHONE COULD DO .

There are a few things that can be done in times of grave emergencies. Your mobile phone can actually be a life saver or an emergency contraption for survival. Check out the things that you can do with it:

Very first Subject: Emergency

The Emergency Number worldwide for Mobile is 112. If you find yourself out of the coverage area of your mobile; network and there is an emergency, dial one hundred twelve and the mobile will search any existing network to establish the emergency number for you, and interestingly this number one hundred twelve can be dialed even if the keypad is locked. Attempt it out.

2nd Subject: Have you locked your keys in the car?

your car have remote keyless entry? This may come in handy someday. Good reason to own a cell phone: If you lock your keys in the car and the spare keys are at home, call someone at home on their cell phone from your cell phone. Hold your cell phone about a foot from your car door and have the person at your home press the unlock button, holding it near the mobile phone on their end. Your car will unlock. Saves someone from having to drive your keys to you. Distance is no object. You could be hundreds of miles away, and if you can reach someone who has the other “remote” for your car, you can unlock the doors (or the trunk). Editor’s Note: It works fine! We attempted it out and it unlocked our car over

THIRD Subject: Hidden Battery Power

Imagine your cell battery is very low. To activate, press the keys *3370# Your cell will restart with this reserve and the instrument will display a 50% increase in battery. This reserve will get charged when you charge your cell next time.

FOURTH Subject: How to disable a STOLEN mobile phone?

To check your Mobile phone’s serial number, key in the following digits on your phone: * # zero 6 # A fifteen digit code will emerge on the screen. This number is unique to your handset. Write it down and keep it somewhere safe. When your phone get stolen, you can phone your service provider and give them this code. They will then be able to block your handset so even if the thief switches the SIM card, your phone will be totally futile. You most likely won’t get your phone back, but at least you know that whoever stole it can’t use/sell it either. If everybody does this, there would be no point in people stealing mobile phones.

And Eventually…. FIFTH Subject:

Cell phone companies are charging us $1.00 to $1.75 or more for four hundred eleven information calls when they don’t have to. Most of us do not carry a telephone directory in our vehicle, which makes this situation even more of a problem. When you need to use the four hundred eleven information option, simply dial: (800) FREE 411, or (800) 373-3411 without incurring any charge at all. Program this into your cell phone now.

Origins: The message reproduced above is (with one exception) a compendium of topics we’ve already covered in separate articles, so we’ll just provide a brief summary for each entry with a pointer to a more detailed explanation:

  • Calling one hundred twelve on your cell phone will (in some parts of the world, primarily Europe) connect you to local emergency services, even if you are outside your provider’s service area (i.e., even if you are not authorized to relay signals through the cell tower that
  • treats your call), and many cell phones permit the user to place one hundred twelve calls even if the phone lacks a SIM card or its keypad is locked. However, the one hundred twelve number

    does not have (as is sometimes claimed) special properties that enable callers to use it in areas where all cellular signals are blocked (or otherwise unavailable).

  • Cars with remote keyless entry (RKE) systems cannot be unlocked by relaying a key fob transmitter signal via a cellular telephone. RKE systems and cell phones utilize different types of signals and transmit them at different frequencies.
  • The claim that pressing the sequence *3370# will release “hidden battery power” in a cell phone seems to be a misunderstanding of an option available on some brands of cell phone (such as Nokia) for Half Rate Codec, which provides about 30% more talk time on a battery charge at the expense of lower sound quality. However, this option is enabled by pressing the sequence *#4720# – the sequence *3370# actually enables Enhanced Total Rate Codec, which provides better sound quality at the expense of shorter battery life.
  • Coming in the sequence *#06# into a cell phone may display a 15-digit identification string, but that function only works with some types of cell phones, and the efficacy of reporting the ID number to a cellular service provider to head off unauthorized use of a lost or stolen phone is limited.
  • Some business garments such as (800) FREE-411 do provide free directory assistance services to cell phone customers. However, users should note that the service is “free” in the sense that FREE-411 provides directory information to callers at no charge, but cellular service providers may still assess charges related to placing such calls.
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