Chosen Solution
When I plug up my charger to my phone a pop up says “Aseccory may not be certified”. And I’ve already did the whole plug it up, dismiss error message , turn on airplane mode , and turn of phone for one minute and turn it back on. It didn’t work. And I’ve had the charger for 6 days and did nothing for it to do that. My phone charges with my friends chargers but not with my own. And when they tried to plug my charger up to their phone it would say the same thing.
Clean out your connector. Canned air is great for this. If still doesn’t work, use an Apple cable and charger.
try another cable if cleaning out the lightning port does not work, if you are getting the same error with a few official cables then change the lightning dock