ceramic pads on 2007 Toyota Camry

Hi all.
Had all of the pads and rotors on my 07 Camry changed about month ago. Mechanic (good one I trust) confirmed he installed ceramic. When I brake in reverse they often squeal a bit and first thing in the morning/after sitting for the day they squeal in forward and reverse. But after a few brakes/bit of driving, the squealing reduces a lot, sometimes stops.
Is this common with ceramic pads and new rotors or think something off?
Thanks

Asked by for the 2007 Toyota Camry
1 answer
sometimes aftermarket parts it does makes some noises but not more than a month, you should go back and let the mechanic inspect the brakes. if the problem not fixed a reminder, you should always use OEM toyota parts