My Fix
FIX: Install RockApp, I didn't know if My3G or MyWi removed FaceTime, so I had to install both again using Cydia and then use RockApp to UnInstall My3G and MyWi (so at this point I have reinstalled RockApp, MyWi and My3G NORMALLY (NO HACKS!!) and used the RockApp to UnInstall them.. You'll re-spring at this point and should have FaceTime back on your phone. I think sometimes the issue is with bad installs of MyWi or My3G... Finally I removed the RockApp itself using RockApp.... (yes you can do this)... Problem solved and now I have my normal WiFi FaceTime.
You can go back into Cydia and download RockApp and redownload MyWi and My3G and you shouldn't loose FaceTime... I have successfully had all three on my phone with FaceTime working just fine...😀
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iPhone4 4.0.1