I was one of the luck few that got selected to go for an exchange program in Paris for almost 8 weeks. During this period I used a matrix sim card instead of a local Paris number. I saw my friends who were using the local number there, running for recharges at od hours and always having issues wth the network but for me I guess Matrix Sim was a savoir. Economical, convenient and good services. Anyone travelling for shorter time of span should definitely use Matrix Sim cards.