A polyurethane adhesive combined with a quick set epoxy gel work well for bonding the soap dish in place.
How to glue a soap dish to ceramic tile.
How to glue plastic to tile.
Pry out the fractured shards of tile and scrape the wall surface clean of any old mortar or leftover adhesive.
Clean off all the soap scum or the bond might fail.
This will support the weight of the soap dish while the tile adhesive dries.
Step 4 check for level and fill with grout to finish installation.
Short of the ends.
Measure the length of the item and divide that number by two.
In the center of the soap dish you can use the quick set epoxy glue.
Spread the adhesive on both the back of the soap dish and on the tile.
Stop by a tile shop and pick up a flat back corner shelf unit about 20.
Repeat the process for the height of the item.
Place a piece of low tack masking tape at that spot.
You should apply the polyurethane adhesive around the outer edge of the soap dish.
Secure the tile with duct or masking tape.
Then buy soap scum remover double face foam tape and a tube of white silicone caulk.
Press the tile firmly into place.
Be careful as epoxy is an unforgiving material to work with.
With a small putty knife spread a layer of tile adhesive onto the wall and the back of your soap dish tile.
While you do have about five minutes of working time these minutes pass quickly so make sure the dish is fully secure right away.
Smear some of the adhesive onto the back of the soap dish too.
Measure the area on the wall where you want the plastic item installed to find the center.