Buying an Italy SIM card is relatively easy for travelers to Italy, and there are packs available that include some free calls to India. After the pack however, you may end up paying high rates to call India. Also, these SIM cards are not useful if you intend to travel to multiple countries
Availability of Italy SIM card
Italian sim cards are available at Fiumicino Airport, Rome, Italy. It has a Vodafone shop, at Area B, T1 Departures Mezzanine Floor and TIM shop at T1 – Boarding Area B. At branded shops you will pay the original price. You can get them in the shops of the providers where they will be registered as well. Top-ups can be bought at many more places like tobacconists(blue-‘n-white / black-‘n-white “T” signs), supermarkets, newsagents and even bars or coffeeshops
Buying Australia SIM cards in Australia is easy for travelers, but beware of per call connection charges of some SIM cards.
Visitors who come to Australia for a holiday and purchase a prepaid SIM card will need registration. You require your passport for registration.
General Availability of Australia SIM card
Australian SIM Cards can be obtained from phone shops at most airports such as Melbourne airport, Optus is located in T2 Arrivals, ground level, whereas at Sydney airport Vodafone kiosk is located at T1 International (Arrivals) near exit A. Australian SIM Cards can also be obtained from a supermarket and online from mobile network provider’s website. Try to get your SIM card in a branded store of the provider at airports where you pay the original price.
Prepaid Singapore SIM cards are easily available for tourists at Singapore both at the airport as well as in town, but you need to watch out for being overcharged.
General Availability of Singapore SIM cards
Singapore prepaid SIM cards are available at the Changi International Airport at the 7-Eleven convenience store which operates 24 hours at the Departure Transit Lounge of Terminal 1 and Terminal 2, Departure Check-in Hall at Budget Terminal. But they maybe overpriced at airport.
Prepaid Thailand SIM cards are easily available for tourists to Thailand both at the airport as well as in town.
General Availability of Thailand SIM cards
At the airport, outside of the International gates, there are kiosks for DTAC (blue colour), AIS (Green colour) and True Move (Red colour). Try to get your SIM card in a branded store of the provider, at airports or in malls or in 7-Eleven kiosks where you pay the original price. Many independent sellers will only sell you the SIM with a surcharge like a tourist SIM of 299 THB for 399 THB.