39153
Released during Q3 2007 for T-Mobile in the USA , the Samsung Blast ( SGH-T729 ) slider features a double-tap QWERTY keypad , music player , stereo bluetooth and a MicroSD slot .
 T-Mobile
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 T-Mobile