What do I do if my IRIS screen suddenly goes dark and won't power on?

Press & hold the power button for 10 seconds to perform a hardware reset on the IRIS. 

If it still won't power on, there might be less than 4% battery power left in IRIS, so please charge the device untill the indicator light turns pure green (not half green). It takes about 3~4 hours before it gets 100% charged.

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