Apple Updated Apple-Device-Support Exam Questions and Answers by nala

Find My uses Bluetooth signals from nearby Apple devices to locate lost or missing devices, even when they’re offline. This feature is called Find My network, and it creates a secure and anonymous network of hundreds of millions of Apple devices that can help find each other. When you mark your device as lost, it sends out a secure Bluetooth beacon that can be detected by other Apple devices nearby. Those devices relay the location of your device to iCloud so you can see it on a map. Find My network respects your privacy and does not reveal any personal information or location data to anyone. Find My also uses Wi-Fi and cellular data to locate devices that are online and have Location Services enabled. References: Find My network overview - Apple Support, Locate a device in Find My on iPhone - Apple Support

Emergency SOS is a feature on your iPhone that lets you quickly and easily call for help and alert your emergency contacts. To access Emergency SOS on your iPhone, you need to press and hold the side button and one of the volume buttons until the Emergency SOS slider appears on the screen. You can then drag the slider to call emergency services, or continue holding the buttons to start a countdown and an alert sound. If you release the buttons after the countdown, your iPhone automatically calls emergency services. Emergency SOS works differently depending on your iPhone model and region. For example, in India, you need to press the side button three times rapidly to call emergency services. You can also customize the settings for Emergency SOS, such as adding emergency contacts, enabling auto call, and turning off the countdown sound. References: Use Emergency SOS on your iPhone - Apple Support, How to trigger Emergency SOS on your iPhone (and shut it off)

 Wi-Fi signal level, also known as Received Signal Strength Indicator (RSSI), is a measure of how well your device can receive the wireless signal from the router or access point. It is usually expressed in decibel-milliwatts (dBm), which is a logarithmic scale that ranges from -30 dBm (very strong signal) to -100 dBm (very weak signal). The higher the negative value, the weaker the signal.

According to the Apple Device Support Reference Materials1, iPhone and iPad will search for a stronger Wi-Fi network when the signal level drops below -80 dBm. This is because a weak signal can affect the performance, reliability, and security of your Wi-Fi connection. A weak signal can also drain your device’s battery faster, as it requires more power to maintain the connection.

To check the Wi-Fi signal level on your iPhone or iPad, you can use the following steps23:

• Open the Settings app on your device.
• Go to Wi-Fi.
• Under the Wi-Fi network list, locate the name of the Wi-Fi network or wireless router you want to check the signal strength for.
• Tap the information icon (i) next to the network name.
• Look for the RSSI value, which shows the signal level in dBm.

Alternatively, you can also use third-party apps that can display the Wi-Fi signal level on your device, such as Wi-Fi Sweetspots or Network Analyzer.

References:

• Recommended settings for Wi-Fi routers and access points.
• How to View Wi-Fi Networks Signal Strength on iPhone or iPad.
• How to View Wi-Fi Networks Signal Strength on iPhone or iPad | Guide.