Chip away at the tile use a long handled floor scraper to scrape away tile fragments and any old adhesive residue.
How to smooth bathroom walls after removing tile.
4 mix a batch of joint.
Sand the walls with sanding block to smooth it out lightly and remove any traces of mastic.
Wipe the walls down and survey the area for any cracks holes or uneven areas.
Once the joint compound is dry usually 24 hours sand the rough spots using drywall sanding sponge or drywall sanding paper.
Scrape away stuck on tile adhesive from the drywall with a plastic putty knife.
Smooth bathroom walls after removing tile clumps of tile adhesive divots from where part of the drywall came off with the tile and other marks will probably be left on the wall as well.
Wipe down the wall using a damp sponge to remove any dust.
Also ensure adequate ventilation by opening a window.
Cut away loose bits of peeling drywall.
After all the tiles are removed you may need to smooth the subfloor with a sander.
So before retiling painting or putting up wallpaper you will need to repair and smooth over your bathroom walls.
Hold the putty knife as flat as possible to reduce gouges in the drywall.
Feb 19 2017 removing tile from bathroom walls can be a labor intensive messy process and the work is not over once the tile has been removed.
Wear a mask and googles during this process.