Samsung Galaxy S4 zoom C1010 SM-C101. 3G Network HSDPA 850 / 900 / 1900 / 2100 - all versions. Loudspeaker Yes. Loudspeaker Voice 73dB / Noise 66dB / Ring 75dB. PLATFORMOS Android 4.2.2 (Jelly Bean), upgradable to 4.4.2 (KitKat).