I wonder if I kept my iPhone plugged-in the whole day while using my phone will have any damage to my phone.

I have been searching for the answer. =P Example, I am working in an office where I can kept my phone plugged-in to kept my phone at 100% while using it to surf and some heavy usage.

I wonder will it reduce the number of charge cycles and provide me a fully charged phone when I am going out at night.

Till now, I just found positive answers in the web.