OS	Android OS, v4.4.2 (KitKat), v5.0.2 (Lollipop), planned upgrade to v6.0 (Marshmallow)
Network bands	GSM / HSPA / LTE
Speed	HSPA 42.2/5.76 Mbps, LTE Cat4 150/50 Mbps
Network frequencies	GSM 850 / 900 / 1800 / 1900 HSDPA 850 / 900 / 1700 / 1900 / 2100 LTE band 1(2100), 2(1900), 3(1800), 4(1700/2100), 5(850), 7(2600), 8(900), 13(700), 17(700), 20(800) - SGP621 LTE band 1(2100), 3(1800), 5(850), 7(2600), 8(900), 28(700), 40(2300) - SGP641
SIM	Nano-SIM
WLAN	Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, DLNA, hotspot
CPU	Quad-core 2.5 GHz Krait 400
RAM	3 GB
Internal memory	16 GB

Sony Xperia Z3 Tablet Compact APN settings & network compatibility in Australia

Sony Xperia Z3 Tablet Compact network specifications