Hey poppy_natthacha, great question! We want you to stay in touch with everyone who's important to you, no matter where they live. If you have a postpaid plan, you can check rates with or without discount international plans here: Calling Abroad. Depending on how frequently you want to call, it may be more affordable to add Stateside International so that you can make unlimited calls to Thailand. Since it looks like the current pay-per-use rate is $1.99 per minute, if you'd like to make more than 8 minutes worth of calls per month, the feature will pay for itself.