Zte Optus X Delight 2 - Connectivity and SIM Card; Special Features List; Battery Caution; Proper Use Guidelines

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Talk time
Up to 28.5 hours (subject to network)
Connectivity
Bluetooth 4.2, Wi-Fi 802.11b/g/n, 3.5mm jack
NAHJ, micro USB with USB OTG
SIM Card
Nano SIM, 4FF format.
Special Features
NFC, Face recognition unlock. Fingerprint reader.
Battery Caution
Do not attempt to open the case or remove the battery. The
battery is not user replaceable. Perform a reset by holding
the power key for 10 seconds.
Proper Use
Do not expose your device to extreme temperatures lower
than - 10 °C and higher than + 45 °C.