Hey, if you are going to US / UK or anywhere in EU, don't bother with roaming.Just buy a prepaid SIM there. Its usually called 'Pay as you go'. In US SIM costs, T-Mobile $5 and comes with $25 talktime. If you buy from a brick and mortar store it will cost $40. In Ebay.com you can get it for $12 (with shipping to India)In UK T-Mobile SIM costs 5 pounds and has 5 pounds talktime.Only thing is in US, incoming is not free 🙁