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What is the main difference between GSM & CDMA?
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Answer Posted / reetharose
Code division multiple access(CDMA) describes a
communication channel access principle that employs
spread-spectrum technology and a special coding scheme
(where each transmitter is assigned a code) to differentiate
between various calls whereas for Global System for Mobile
Communications(GSM) is a specification of an entire wireless
network infrastructure that uses a narrow-band . With the
advent of cellular phones doing double and triple duty as
streaming video devices, podcast receivers and email
devices, speed is important to those who use the phone for
more than making calls,CDMA has been traditionally faster
than GSM, though both technologies continue to rapidly
leapfrog along this path. Both boast "3G" standards, or 3rd
generation technologies.If you need to make calls to other
countries, a GSM carrier can offer international roaming, as
GSM networks dominate the world market. If you travel to
other countries you can even use your GSM cell phone abroad,
providing it is a quad-band phone (850/900/1800/1900 MHz).
By purchasing a SIM card with minutes and a local number in
the country you are visiting, you can make calls against the
card to save yourself international roaming charges from
your carrier back home.For this you can unlock your mobile
from network lock with a service of an online vendor like
http://www.classicunlocking.com/supported-phones/rs17wp7
.CDMA phones that are not card-enabled do not have this
capability, however there are several countries that use
CDMA networks. Check with your CDMA provider for your
specific requirements.
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