Most of us travel and use our US carrier to roam while we are in another country or buy a local SIM. There are benefits to both methods, so let’s take a look at the options.
Buy A Local SIM
If you buy a local SIM, you are essentially getting a local number in the country you are in. Most of us don’t care about the local number; we value the high speed data package that comes with the local SIM. This presents a small problem though; if you value making toll free calls to the US or receiving calls on your local number, you won’t be able to do that with a local SIM. You also will not be able to send or receive any text messages from your local US number.
Use Your US Carrier To Roam In Another Country
If you use this method, for example with T-Mobile, depending on your plan, you can likely receive text messages for free on your US number. This can be useful for several reasons: phone calls generally cost a small amount and data is free. The disadvantage to using this setup is the data is usually severely throttled by the foreign carrier and some people find it useless because it is so slow.