I haven't heard of a cell phone actually damaging a head unit before. That's interesting.
Noises and thud's are usually bad connections problems. Check all grounds first.
Good luck.

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Alpine CDA-9887, TUA-T500HD, CHA-S634, CHA-1204 & KCA-410C
Pioneer TS-A6981, 6 x GM-5100T
Kicker 2 x CVR15,
MBQ RCE-216
PG MX2
Soundgate LanStar1
PAC SWI-ALP