I never had a problem with my charger until I returned it because I got fed up with the fingerprint sensor, which sucked (Motorola 2021... searched online and discovered it is widely known for having a bad fingerprint sensor.)
Verizon sent me a "replacement" with the same stupid "side sensor" which is ALSO the on/off button. Stupid stupid design!
Anyway, I never had a problem with the charging port or charger, but when I returned the phone Verizon then claimed that the charging port was burned. I took pictures and everything but I couldn't see from the pictures that anything was different about the charging port. That was when I learned about ports burning. Never ever ever had a problem before, but I do wonder whether maybe a power surge or something in the building I live in may cost it. Should have insured it, but I've never had phone problems at all, so I didn't think it was all that important, but now I'm out another $600 for a phone that basically sucked. Still fighting with Verizon and working on a complaint with the FCC. Anyone out there with similar problems?