Evet, Xperia Z2'nin 4G (ülkemizdeki adıyla 4.5G) desteği var.
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| 2G | GSM 850/900/1800/1900 - D6502, D6503, D6543 |
| 3G | HSDPA / 2100/1900/900/1700 850 - D6502, D6503, D6543 |
| 4G | LTE bandı 1 (2100), 2 (1900), 3 (1800), 4 (1700/2100), 5 (850), 7 (2600), 8 (900), 13 (700), 17 (700), 20 (800) - D6503 |
| LTE bandı 1 (2100), 2 (1900), 3 (1800), 4 (1700/2100), 5 (850), 7 (2600), 8 (900) - D6543 | |
| Hız | HSPA 42.2 / 5.76 Mbps LTE Cat4 150/50 Mbps |
| GPRS | En fazla 107 kbps |
| EDGE | En fazla 296 kbps |