Answer Posted / asharoslin
1.Every GSM phone has an IMEI number to identify the
handset. GSM also uses a SIM card to store a customer's
account information. If you buy a new GSM phone, you can
simply remove the SIM card from your old phone, place it in
your new phone and begin using the new phone right away. You
are not required to register the new phone's IMEI number
with a GSM provider.Sometimes your phone is locked with the
network (under contract).In such situation to switch the sim
card or get out from the network contract you need to unlock
your mobile .It is easy to get the GSM
mobile unlocked by the network provider or by any online
vendor like
http://www.theunlockarena.com/supported-phones/rs13wp7/
2.GSM service is obtainable in added than 200 countries,
clienteles are capable to roam globally without altering
their devices or their facility plans. Messaging facilities
and other progressive services, such as data, too endure
obtainable.
3.When you use a GSM network, you can talk on the phone and
surf the Internet or sync your email at the same time.
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