Iphone 5 not charging from charger, from pc its ok
 

I have very strange problem with iphone 5. It's not charging from charger, but when i connect it to the computer it;s charging normally. I've checked everything, changed dock, orignal cable. When iphone is turn off and i connect it to the charger it will turn on but not charging so i think q2 is ok. Maybe u2 but battery is not draining off... very strange problem.