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Before you send the unit, please make sure the issue is not related to setup such as your power adapter, cable, outlet...
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Please contact our support at support@cell2jack.com

The defected rate of our product is very small.
99.999% customer's issue is related to setup

​Please send the bad unit with the prove of purchase (date and place) to below address.
Replacement will be sent to you as soon as received.
Please provide return mailing label if you are not in USA

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To speed up replacement process, please email tracking number and the failure symptom after ship

Cell2jack #119
171 Main street
Los Altos, CA94022

We have full confidence behind our product and offer 3 years warranty.
Before you send the unit, please make sure the issue is not related to setup