Broke after 3 months

These worked well for approximately 3 months. Then within the last 2 weeks 3 out of the 4 cables stopped working. Only one of them is slightly frayed and the other two have no visible damage, but they just won’t charge my phone. Just out of the blue they stopped charging and I’m not sure what happened. Unfortunate because they are a good deal but they just don’t last.

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