I noticed these today . Sent the pictures to my dji shop . He says caused from presure from top . I m in Thailand not sure what i should do .

Never crashed only used sport mode twice .

useref03683554 Posted at 2017-6-9 03:33
Never crashed only used sport mode twice .

I think you are looking at moulding marks and/or fine scratches in those photos. My P4 has exactly the same marks as photo number 2, and is over a year old now and crack free. As the aircraft get used some of these marks become more obvious when they get a bit dusty or dirty.

Best thing is just keep checking every so often as part of your pre flight checks.