Gazally wrote:
Thanks, it helped, but we cannot take the full use of the iPhone camera features such as SLO-MO and PANO
Yes, you can. Yes, there will be a shutter noise. Unless you're taking pictures of people without their knowledge (rude and possibly illegal), taking pictures where it is illegal or where it would be disrespectful to take pictures at all, this shouldn't be an insurmountable problem. Put your finger over the speaker. It will almost completely silence the sound.
If you purchased your phone from Apple or an authorized reseller, it will be from the region where you purchased it.