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After about a year and a half of use, this item intermittently failed to charge the smartphone. Troubleshooting indicates that the problem is a bad connection where the cable enters its device connector. I will add that this charging cable was frequently used to charge the smartphone at the same time that the smartphone was being used, resulting in more wear and tear at the connector than otherwise. The charging cable still works if I lay the device and the device end of the charging cable on a flat surface, adjust the cable until charging begins, then leave it alone until the charge is complete.