Device identifiers: When you use a mobile device like a tablet or phone to access our Service, we may access, collect, monitor, store on your device, and/or remotely store one or more ""device identifiers."" Device identifiers are small data files or similar data structures stored on or associated with your mobile device, which uniquely identify your mobile device. A device identifier may be data stored in connection with the device hardware, data stored in connection with the device's operating system or other software, or data sent to the device by Instagram. A device identifier may deliver information to us or to a third party partner about how you browse and use the Service and may help us or others provide reports or personalized content and ads. Some features of the Service may not function properly if use or availability of device identifiers is impaired or disabled. 