can a cell phone be used in different countries? is there any adjustment to be done on the cell phone?

Answer 1

Yes, you have to have a compatible phone though. Tri and Quad band phones are what you would need. I believe the united states and parts of south america work on 1900 and 850 frequencies and europe/other countries work on 1800 and 950, something like that. So if your phone is quad band you can roam anywhere (except japan that uses the 3g). You can actually check with your service provider to get details on whether or not your phone is capable, what band the country you are going to travel to uses, and the prices for the roaming rates.

Another option if your cell uses sim card, you can purchase an international sim card and get your phone unlocked to be able to use the international service while you are there. That can be cheaper than roaming rates.

Answer 2

If you own a Tri-band (Which can be Used in Europe,UK,Ireland and North America) or a Quad band (Usable in the far east,Austral-Asia)
Then the Handset has settings that allow you to automatically search (Upon Arrival) for the reciprocal networks that you can use.
If in doubt,consult your manufactures web site-where details of Global coverage is Given!(Also Known as 'Roaming')

Answer 3

no not really really depends on the phone as stated you would need a tri or quad band phone for example verizon in the US uses CDMA meanwhile Tmobile uses GSM the GSM frequencies in the us are 850/1900 meanwhi; the rest of the world uses 900/1800

Answer 4

By changing the sim card is enough.There is no adjustment needed in cell phone

Answer 5

yes! ask ur service provider to get international roaming, they will do the rest for u.