Create dropdown lists in a cell with Google Sheets.
Create a drop-down list
- On your Android phone or tablet, open a spreadsheet in the Google Sheets app.
 - Tap the cell or cells where you want to create a drop-down list.
 - In the top right, tap More 
.
 - Tap Data Validation.
 - Under "Criteria," choose an option:
    
- List of items: To add an item, tap +Add and enter an item. To save an item, tap Done 
.
 - List from a range: Enter the cells that will be included in the list.
 
 - List of items: To add an item, tap +Add and enter an item. To save an item, tap Done 
 - The cells will have a Down arrow 
. To remove the arrow, next to "Show dropdown list in cell," turn off the switch
.
 - If you enter data in a cell that doesn’t match an item on the list, you’ll see a warning. If you want people to only enter items from the list, choose "Reject input" under "On invalid data."
 - In the top right, tap Save. The cells will show a drop-down list.
 
Change or delete a drop-down list
- On your Android phone or tablet, open a spreadsheet in the Google Sheets app.
 - Select the cell or cells you’d like to change.
 - In the top right, tap More 
.
 - Select Data Validation.
    
- To change the items listed, go to "Criteria" and edit the items. In the top right, tap Save.
 - To delete a list, go to the bottom right and tap Remove rule.
 
 
Note: If you change the contents of the range you've selected, the changes will be made in the list automatically.