▁applications ▁that ▁run ▁on ▁mobile ▁ph ones ▁and ▁store ▁them ▁in ▁the ▁phone . ▁ ▁Music ▁player ▁Support s ▁MP 3 ▁file ▁formats , ▁and ▁can ▁be ▁added ▁via ▁Universal ▁Serial ▁Bus ▁( U SB ), ▁Micro SD , ▁or ▁Bl uetooth . ▁It ▁is ▁also ▁possible ▁to ▁listen ▁to ▁music ▁with ▁a ▁wireless ▁Bl uetooth ▁head set . ▁ ▁Songs ▁can ▁be ▁set ▁as ▁a ▁ring t one ▁or ▁alarm ▁tone . ▁ ▁Camera ▁The ▁S amsung ▁Gra vity ▁has ▁a ▁basic ▁ 1 . 3 - m eg ap ixel ▁camera ▁with ▁digital ▁zoom , ▁multi - shot , ▁and ▁cam c order ▁capabilities . ▁Ph otos ▁can ▁be ▁set ▁as ▁wall paper ▁or ▁Call er ▁ID . ▁ ▁Av ail ability ▁In ▁the ▁United ▁States , ▁this ▁phone ▁was ▁released ▁on ▁T - Mobile ▁USA . ▁In ▁Canada , ▁the ▁Gra vity ▁ 2 ▁was ▁previously ▁available ▁first ▁on ▁Rog ers ▁W ire less , ▁then ▁later ▁on ▁its ▁Ch atr ▁brand . ▁ ▁Both ▁carri ers ▁have ▁dis cont in ued ▁the ▁device ▁in ▁ 2 0 1 1 . ▁ ▁They ▁now ▁carry ▁other ▁Q W ER TY ▁feature ▁ph ones ▁instead . ▁ ▁See ▁also ▁ ▁S amsung ▁Bl ast ▁( SG H - T 7 2 9 ) ▁S amsung ▁Be hold ▁ ▁External ▁links ▁▁ ▁http :// www . phone ar ena . com / html s / S amsung - G rav ity - phone - p _ 3 2 0 9 . html