My Lumia 625 become hot

[AMJTS]

Hi,

Yesterday, I was using my Lumia to access facebook and twitter. And when I touched the phone around near front camera, it was hot. My Lumia was getting and becoming hot. I just recognized it yesterday. I never recognized it before. Is that ever happened to your phone too ? And is it normal that my phone becoming hot when used?
Thank you for any helps.

Kind Regards,
Me

 

[LTTG]

Yes, I recognized it before, I don't know why it becomes hot above the camera area, but I don't think you should get worried, it happens when you use the phone too much.