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ZTE Z291DL User Manual
Confidential and Proprietary Information of ZTE CORPORATION 17
Type the old PIN code, and then type twice the new PIN code. Click Apply to confirm your
configuration.
NOTE:
Three times consecutive wrong PIN code entries will block the SIM card.
Power Save
Select Settings > Device Settings > Power Save. You can set Wi-Fi performance and Wi-Fi sleep to save
power.
Wi-Fi Performance Settings
Short Wi-Fi Range: Increases battery life.
Medium Wi-Fi Range: Intermediates battery life and Wi-Fi range.
Long Wi-Fi Range: Extends coverage of mobile hotspot, which will decrease battery life.

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