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Travelling Smart Overseas With Your Cellphone

Some time ago, I was in charge oftheir phone in many parts of the world.
developing a business concern on theOne of the key differences with GSM is
beautiful island of Sri Lanka whilethat the phone itself is not directly
based in the United States. At onelinked to you. Rather, the removable
point, I needed to send an employee"SIM" (Subscriber Information Module)
there to set up the quality controlchip is encoded with a unique serial
program. This employee did not have anumber which is what now identifies
GSM cell phone so I lent him mine toyou to the wireless provider.
use "in case of emergency only". TheHaving your info embedded into a
employee spent time each nightremovable SIM chip rather than into
chatting with family on the cell phoneyour cell phone is what makes this all
and came back with a $3,000 phone billso interesting. If you place your SIM
in two short weeks.chip into a compatible cell phone, you
If you have a US GSM cell phone andcan use that phone as your own because
service account, you may find that itthe service provider will recognize the
will cost you something in the range ofSIM chip inside of it as yours.
$3 per minute to use your phoneConversely, you can buy compatible SIM
overseas due to international roaming.chips from the country you are about
As an example, on one trip to Hamburg,to visit and use them in your phone.
I had lost my party at a very largeThis is what allows you to avoid the
exposition. I used my cell phone tougly international roaming charges
call them and found out that instead ofmentioned above.
it being a local call, it went to theBefore you can do this, however, you
US and back via their networks thuswill most likely need to "Unlock" your
charging me for two international calls!cell phone. Most wireless service
A little while later I was on a plane toproviders "lock" their cell phones
Sri Lanka. As we were about to land,which means that they program them to
the gentleman next to me took out aonly work with SIM chips issued by
small bag and dumped the contents intotheir company. Unlocking a cell phone is
his palm. They were SIM chips. I askedbasically reversing this programming.
him what this was all about and heThe process is very easy and quick.
told me he was looking for his chip forThere are many service providers online
Sri Lanka. He informed me that thethat specialize in mobile unlocking.
chip enabled him to make calls in andOnce the cell phone is unlocked, it is
from Sri Lanka without incurring thepermanently unlocked.
extremely high roaming charges myNow I wanted a SIM chip that would work
friend above met with. He traveledin the country I was headed too,
throughout Europe and Asia and hadagain, Sri Lanka. I was told that the
chips for each major locale.best way was to find a cell phone
I was intrigued by this idea and didstore there in Colombo but this sounded
some research on what it took to usedifficult as my schedule would be very
these local chips in my cell phone. Herebusy. While searching for an
is what I found:alternative, I was directed to as a
Your basic cell phone service providersource of chips via the internet. I
places a unique serial number intofound that I could buy a chip from Sri
your cell phone. This unique number isLanka with pre- paid minutes on it.
called an "ESN" and it is used by theThey did also offer a great variety of
service provider to identify who youSIM chips from most major destinations
are. The service provider uses thisaround the world. The process was quick
number to know where to send phone callsand painless and I found the cost to be
too when someone dials your number.very reasonable ($79 vs. $3,000!). The
A GSM phone is a little differentonly drawback to the system was that
animal. "GSM" (Global System forthis did give me a new phone number
Mobile Communications) is a type ofwhich I had to pass out to family and
digital mobile phone service. GSM isbusiness associates prior to
the most common standard for cell phonesdeparture.
in the world. GSM service is common inThe trip went well as I was able to
over 210 countries around the world withcoordinate activities with local
over 1.5 billion users. The popularityvendors and business associates without
of GSM makes international roaming veryfeeling like I had to hang up the
common between cell phone operators,phone after two sentences.
enabling the user to successfully use



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