Hello,

After investigating this matter further and doing some research, the grid multiple cell selection on touch screen devices has been determined to be a feature request. You can submit feature request in our GitHub repository here. 

• Enter a title.
• Provide all the required information and if needed any additional.
• You don’t have to assign anybody.
• Click on the green Submit button.

Remember when submitting your idea to explain the context in which a feature would be used and why it is needed as well as anything that would prevent you from accomplishing this today. You can even add screenshots to build a stronger case.

This will give you the opportunity to directly communicate with our development team regarding the issue and get notifications whenever new information is available.

If you require any further assistance on the matter, please let me know.

Regards,

Georgi Anastasov

Entry Level Software Developer

Infragistics