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 [email protected]

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

​Please email us after you ship the defected unit.
Include a short description of failure symptom and USPS tracking #
when and where you purchased the unit ( with purchase record).


Replacement will be sent to you as soon as received.

Please ship the defected unit to
Cell2jack #119
171 Main street
Los Altos, CA94022

We have full confidence behind our product and offer 1 years warranty.
Before you send the unit, please make sure the issue is not related to setup.
For non-USA address, please include return envelope.