At the bottom, below the wheel on the back is a triangle. That is to view your last shot. View your last shot with this button then press "DISP" to cycle through the various photo analysis (histograms).
I understand your frustration. That has happened to me a couple of times and I've had to go through the whole remember what button to hit to turn it off. Also, as I recall, the T3 has the "DISP" button right where your thumb rests while holding the camera.
I have a Canon Powershot ELP 110 HP. Had it for years. I was trying to turn off the HIsogram and this is what worked for me.
Turn on camera
Click the arrow button to play your pictures.
Click on Disp
Click on Disp again
This will show you the whole image on the screen.
Then to test it,
Turn off Camera
Turn of Camera
Go to Play and it should have retained your setting.
jinxz007girl, I have a T7 and found your instructions are right on. Manual doesn't have this info. Many thanks!
09/26/2023: New firmware updates are available.
08/18/2023: Canon EOS R5 C training series is released.
07/31/2023: New firmware updates are available.
05/31/2023: New firmware updates are available.
05/18/2023: New firmware updates are available.
03/30/2023: New firmware updates are available.