|1.In case of GSM you can
choose a handset seperately from a wide variety available in the market.
It should be GSM 900/1800 compatible for use in India.
Then buy a pre-paid or post-paid
SIM card (Subscriber Identity Module that contains user account information)
from any of the GSM Service Providers like Airtel, Vodafone, IDEA, MTNL, BSNL,
Aircel, Spice etc. Just insert this SIM into your handset and start talking.
|1. Handset is network locked.
You buy a package from the Service Provider like Reliance or Tata Indicom
that includes a handset and a pre-paid or post-paid plan.
Earlier it was difficult
to change the handset and keep the same number but now to change a Reliance
handset in future, you just need a handset change card costing a nominal
T-SIM enabled handsets of
Tata Indicom can be changed easily.
|2. A very large range of
handsets to choose from as the big handset companies like Nokia, Samsung,
Sony, LG, etc. are marketing their products through independent
distribution and retail network.
||2. Choice of handsets is
limited to the models offered by the Service Provider. Although both Reliance
and Tata have now a range of entry level, mid-segment and features rich
advance handsets available with them.
|3. You can easily change
the service provider and continue with the same handset.
||3. You can't change service
provider and continue with the same handset. It could be technically possible
but not easy.
|4.In GSM different frequencies
are used across different cells but that does not mean that voice clarity
is necessarily compromised. Actually it depends upon the location and network
||4.Voice clarity is supposed
to be better in CDMA network as it uses same frequency across all cells.
|5. EDGE (Enhanced Data Rates
for GSM Evolution) enabled GSM networks are comparable in terms of download
speed. Please note an EDGE enabled handset is also required.
||5. Data Transfer Speed is
traditionally more in case of CDMA. BREW(Binary Runtime Environment for
Wireless) technology which is exclusive to CDMA networks enables faster
|6. GSM service providers
are better networked globally to offer international roaming. But you must
check for roaming call rates and coverage in the regions or countries where
you visit frequently.
|6. Check for International
roaming tie ups if you travel abroad frequently. Also check for the coverage
in the region where you intend to use your cellphone within India.
enables international roaming with one world one number concept.
|7. If you travel to other
countries you can even use your same GSM cell phone abroad if it is a quad-band
phone (850/900/1800/1900 MHz). By purchasing a local SIM card with call
value 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 home service provider.
||7. CDMA phones that are
not card-enabled do not have this capability.