won't charge after 5 months

What I like: light weight. Build-in USB. What I don't like: 1-The build-in USB is hard to put back into the body slot after use. I had to wriggle it couple of times to get it in. 2- Power bank failed to charge my phone after 5 months. (it get charged 100% , but won't charge to phone, I had to wriggle the USB when plugged into the phone, sometimes it will make the connection, more than often...it doesn't.

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