<human>: First off I'm not sure if this would be the right subreddit. I was going to post on r/LongDistance but it doesn't seem like too many people are active on there, and I need a rather quick response because I leave within the next 24 hours. 

I'm 19 [m] and my gf is 19 [f]. We've been together for almost 10 months now. It's an amazing relationship and we both love each other very much. It is LDR, however but only about hour and half away from each other so it's not too bad at all. I'm leaving for vacation with my family to my home country and I'll be 7500 miles away from her but it is only for about 4 weeks.

Somethings I'm worried about. Major one is communication. We're used to talking all day and calling each other 2-3 times a week at night. However, I won't have internet access at my house in my home country but I will at my cousins' houses. I did get my phone unlocked but I'm not sure how that process works and if I'll be able to text her internationally. If someone has any information about that, it will be great. I'm an AT&T user and have an iPhone 4.  I will try my best to talk with her everyday but I know sometimes that won't be possible. 

Another thing I'm worried about is what after I come back our relationship is different? The time zones are going to be completely different and I know we won't be able to talk as much as we do now. What if she gets emotionally distant after because shes used to me not being there for her?

Fellow redditors, help me out by giving me some advice, please :)

Can you provide a brief rundown of the text in within 3 sentences?
<bot>: going on vacation 7500 miles away for one month. worried about being able to communicate with gf. any tips?