Bolt ons

[Blue43]

Hiya I am travelling to china Japan and Singapore. What bolt on do I need and will it work out ther?

[pgn]

Guide: Roaming MegaGuide has some of the answers, and this has the options for each place you are visiting, by type of service (Contract or PAYG) @Blue43 https://www.o2.co.uk/international/using-your-phone-abroad

Good luck!