This is In addition to the usefulness of your phone's camera posted earlier.
Most people think that the only use of a smartphone’s camera is to take personal photos . But hell No, it's more than that.
If you have a camera on your device, this can become handy at any time,helping you in myriad ways.
Some of these you may have guessed, while some may surprise you.

1. Take a screenshot of directions, in case you don't get internet service when you need it the most.



Imagine losing service when you're in a new place you don't know. Well, now you can just look at the photo and you're not lost anymore.

2. Snap a photo of your tickets.



3. Lending something to someone? Take a photo so you don't forget what you gave, and to whom.



4. Your smartphone camera can test if your remote batteries still have juice.



Point the front of the remote to the camera, look at the phone screen and press some buttons on the remote. Most phone cameras can detect the infra-red light that is invisible to the human eye.

5. Travelling? Take a picture of your contact info in case you lose the page it's written on.



6. Use your phone to see other angles of your haircut.



7. Take a photo of the content of boxes when moving, so you'll know what is stored where.



8. Going with your kids? Take a photo of them in the morning.



This way, if they get lost (God forbid), you have the most up-to-date photo of your children.

9. Photograph landmarks around your hotel when you travel.



If you're not sure if you're in the right place, just check your phone. You can also show it with cab drivers and they'll know where to take you.

10. The same goes for when you park in a big parking lot. No more walking around trying to remember which floor you parked your car on.



11. Take a picture of your fridge before you go grocery shopping, so you know what you need to get.



12. If you're near-sighted and don't have your glasses, take a photo with your phone - things will be much clearer.

Source http://techspot.com.ng/smartphones-camera-worth-selfies/