“Can you use this "unlocked" phone with ANY carrier? I've been trying to figure out which phone company to use, and I've found that my Sprint phone-Galaxy S3 is NOT compatible with boost (even though they are on the same towers, apparently my Sprint phone will not have all of the features of picture messaging and such). I'm sort of afraid to spend so much money and then be committed to one carrier. I'm wondering if I buy this phone will I then be able to use it with Verizon, Boost, Metro PCS, Sprint, T-Mobile etc. just by changing out the SIM card? Ultimately I don't want to spend $500 on a phone that is only compatible with Boost to find out that I hate them and then have to buy a new $500 phone to switch carriers. My boyfriend has Boost and his service will be fine for a month then the next month it drops EVERY call. I'm not sure if it has something to do with his older phone or if its their service, but if it happens to me I want to be free to take my phone elsewhere! Thanks for your help!”