If someone seems unresponsive, it could be because their phone is set to Do Not Disturb or they may have another device blocking you from seeing their messages on an iPhone. While there's no foolproof way of knowing whether they have blocked you on their device, following these tips should help provide more insight into their activity status.
One easy way to determine whether someone is active on their phone iphone is by looking at Instagram or WhatsApp status updates. If they're currently online, a green dot will appear next to their profile image indicating they're online; at the top of your screen's activity bar you'll also see information like 'Active 2 hours ago' indicating their activity status.
Find My feature can also be used to track people. It will display a list of locations your iPhone has been, both your own and those you shared it with, and show what time each person was last on, giving an indication as to when they might be online or available.
Another way to know if someone is active on their iPhone is to check the iMessage status of a message they sent you. If its color changes from red to blue, that indicates they have read your message; otherwise it remains unopened unless they have internet connectivity and can open it at that moment. This is because iMessages travel via internet protocols and cannot be read without connectivity.
If you suspect someone of being spying on your iPhone, one way to try and detect them is by checking its app order. This can be accomplished by either swiping up from the bottom of the phone, or on an iPhone with Face ID by swiping inward in its centre - the carousel that appears will show apps in order of most recent use; should someone have been spying, they are likely moving apps around as an attempt to cover their tracks.
To detect whether someone is using their phone or not, the last method involves downloading a spy app onto any iPhone. Such apps allow users to see who is calling, where they are located and which applications are being utilized by their target. Such apps are ideal for parents looking to monitor the activity and safety of their children.
If none of the methods above have worked and you still can't reach someone, it could be because they have blocked you on their iPhone. In such a case, respect their wishes and find another means of communicating. Alternatively, reaching out via other devices and social media could indicate they remain available to speak with.