I fixed the home button speaker disclosure wifi antenna cellular antenna vibrator.
Was pretty easy not to bad on time just not so steady hands Why I took awhile but got it done.
iFixit Opening Tool
iPhone 4 GSM/AT&T Front Camera
iPhone 4 GSM/AT&T Wi-Fi Antenna
iPhone 4 and 4S Speaker Enclosure
iPhone 4 GSM/AT&T Cellular Antenna