I’m away to America next week and want to minimise my phone useage due to costly terms

[Trevor7]

I’m away to America next week and want to know how to minimise my bill

[pgn · Accepted solution]

Info in here, @Trevor7 - Guide: Roaming MegaGuide 

And switch off your voicemail before you leave, and don't expect any stellar performance for your daily data use, assuming you have added the correct travel bolt-on (O2 Travel Inclusive gives you a small allowance).