Hi Ng kuan Geok,
Below are the answers to your questions.
1- do I need to turn on my pc for continuously recording??
No, you do not need to on your pc for recording.
2- can I view recorded video/playback from iPhone??
yes, you can view recording on your iPhone but will advise you to view it on your pc as 32GB files will be slow for your iPhone
3- any fast forward function for viewing recorded video??
yes, fast forward function is allow on your pc
4- to view with iPhone is by an iphone apps or through website??
is thru an app
5- lastly , I would like to confirm v u again that the camera is able to record continuously 24 hourly, n able to rewrite automatically.
yes, it can record continuously 24 hourly, and will auto rewrite once your 32GB is used up
Please let me know if you have more queries. Thank you.