Xperia Z3 :: Ringtones Very Slow After 2 Seconds

my z3plus is 4days old and having some problems.

1. ringtones is very slow after 2secounds, but all other notification works good.

2. today for first time wen checked with earphone both music and in call it works in both earphone and as while as phone.

3. i could not use camera after second day only back camera, problem was if i take any photo it would saved in only black or in preview it would be black. both problem raised with lot of heating in back.

so decided to repair with pcc, i had activated myxperia. i disabled it did repair but after repair phone was locked and it was showing my id or password was wrong. so i searched in forum and decided to wipe phone in myxperia, unfortunately in myxperia it was showing locked but i could not wipe. i was getting an error saying that faied try again. after keeping set a side for half an hour it took my id and password and restarted. now i have disabled myxperia but in myxperia still it is showing device is protected. if i try to see location it fails same has earlier.

After repairing from pcc i have not seen any problem in camera except over heat after taking 3or 4 shot.