My HTC M8 only seems to charge when it is physically portrait. What may be the problem?

[AC Question]

I left my phone to charge overnighht before I went to sleep. When I awoke, 4-5 hours later, it was still quite low on charge. To remedy this, I just removed the charger and returned it to the phones' charger port. But when I did so, it would no longer charge. After fiddling around, changing USB leads and blowing air into the USB ports to ensure pocket lint wasn't disrupting charging, I managed to get it to charge, but, as mentioned in the question, only when physically portrait. What would be the best course of action because I rely on my phone for many mundane aspects of my life e.g. waking me up on time, contacting important contacts etc.?

 

[belodion]

Welcome to Android Central.

Whatever the cause it doesn't sound like something you could easily fix yourself. It could be a poor connection or something, inside the phone.

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