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authorised. Using any unauthorised accessories affects
your device’s performance and violates related national
regulations about telecommunication terminals.
• Avoid using your device near or inside metallic structures or
establishments that can emit electromagnetic waves; it may
inuence signal reception.
• Your device is not waterproof. Keep it dry and store it in a
cool place.
• Do not use the device at once after a sudden temperature
change. We recommended to wait until the moisture is dried
out inside and outside the device.
• To avoid damage, do not drop, bend, or strike the device.
• Make sure only qualied technicians undertake repair work.
• Operating temperature range of -10°C ~ +40°C is
recommended.
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