Next use a chisel and hammer to pry the tiles off of the wall.
How to remove one wall tile.
Remove the tiles with a flat pry bar placing the edge low against the side of the tile and striking the base of the knife with a hammer.
In order to remove the adhesive from the back of the wall tiles you should use a scraper.
Then use a utility knife or rotary grinder to scrape away the grout until the spacer lugs between the tiles are visible.
With the removal of the one tile keep going under the surrounding tiles gently popping the tile from the wall by prying it from the wall using the scraper and hammer.
Be careful to cut away only the grout and not into the wall.
Tiles installed with thinset or another tile adhesive often require more work to remove them.
Allow to fully dry.
When you believe you have removed or cut away most of the grout stop and examine your work.
Use a ball peen or masonry hammer and cold chisel to tap the pieces free.
Therefore you should use the same chisel to remove the adhesive from the wall by tapping it with a hammer progressively.
Last but not least you should remove the tile adhesive from the wall and from the back of the ceramic tiles.
To remove wall tiles start by heating up the grout between the tiles with a blow dryer so it s easier to remove.
You should be able to slide a putty or plaster knife underneath the tile.
Position the tip of a nail set against the tile at the cracked or chipped area.
An electric chisel is another option.
Move the nail set.
Finish sanding the entire wall with 120 grit sand paper on drywall sanding pad.
For semi soft adhesive mastic use 120 grit sandpaper to remove it from the wall.
Always wear safety glasses when removing ceramic tile.
Work slowly and at about a 45 degree angle.
The method used to attach the tiles to the wall affects the way the tiles come off.
Periodically scrape adhesive off the exposed floor with a putty knife or a floor scraper.
To remove thinset use a stiff putty knife and some elbow grease to scrape it from the wall.
Once the tile is down take a 5 in 1 tool and scrapper to remove any excess grout.
Tap the end of the nail set with a hammer to shatter the tile and pry the pieces off with a chisel.