How to fix wiped Iphone apps?

So last night I had my Iphone apps all wiped from my phone. This includes settings, app store, messaging like EVERYTHING. Now it must be fixable because I still get the app notifications and I can access music through the lock screen. If anyone knows how this can be fixed please help me

I would suggest plugging it into your itunes and syncing it again.

If you are used to sync your phone with iTunes, you will get all back from iTunes just after sync

  • When you erase an iphone of all of its content & settings, does this mean EVERYTHING is wiped? I wiped my old iphone because i got the new 6s. So my icloud is in use on my current phone, but i wanted to know, that since i wiped out my old on. Does that mean it would be safe to give it to a family member or close friend to use? Without having my personal info. On it?
  • My iphone 5 has wiped all my stuff I was using my iphone 5 today and it just went blank and told me to plug into my itunes (I have never plugged it into my itunes before) It told me to restore it so I did and now all mu ipod stuff is on my iphone 5 and everything from my iphone 5 is gone (contact, photos, apps) etc Please can someone tell me hoe to get my phone stuff back I'm freaking out! My icloud has my ipod backed up to it
  • Lost my iphone passcode, if I restore, does icloud get wiped too? I saved everything to icloud before hand and all my pictures are on my computer already so i'm just nervous about losing my contacts, bu those should be saved to icloud, i'm wondering if I end up having to restore it will my icloud get wiped too or will I be able to get to my contacts again?
  • I wiped my iPhone, can I get everything back by syncing with iTunes? I erased everything on my iPhone, can I get all my apps and photos and such back on it by just syncing with iTunes?