The usb port in my 2017 still seems to be working fine, but again I just got the trailer this summer. The previous owner only used the trailer 2-3 times in the three years he owned it. When/if mine fails I will look for a quality replacement. Mine has the two outlets plus the power point to plug something, like the backup camera monitor, into.
It's also obvious by reading the replies that a lot of people who posted suggestions are people who use their trailer hooked up to shore power. I wish Icould use some of those suggestions, but I don't feel it would work well to fire up the generator to get ac to run those plugs just to charge my phone.
OK so I walk in the camper, step on the core left in the USB charger near the kitchen sink. Of course the cord rips the dual USB ports out of their socket. I tried to repair it but no luck. The label on the back of it says: american technology components AV1-5-U I've already looked online but can't find it at all! Anyone have an idea where to find a replacement, besides trying to go through Jayco or a dealer? I can't even find a different manufacture model that might be usable, even if I make a bigger hole for one. 
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