International dialing is available from most major hotels and ISTD booths in the markets. To make an international call, dial 00 followed by the Country Code followed by the Area Code followed by the Phone Number. Services tend to be reliable.
Internet is available, though not as widely as in many other tourist areas and the connection is reputed to be very slow, but there is hope that things will improve in the next season. Roaming mobile signal is available in Port Blair but may be erratic on other islands. If you are planning to buy a new SIM card, we suggest you opt for BSNL as it has the best connectivity on the Andaman & Nicobar islands.