Hi Jaydeep,
Thanks for contacting Syncfusion Support.
We have checked your query and we were not able to reproduce the reported issue on our side. We have checked by loading two SfDataGrids in one page with Paging and Filtering enabled and the both the grid were visible in iOS.
We have attached our working sample for your reference and you can download the same from the below link.
If the issue still persists on your side, then please do revert us with the modified sample reproducing the issue which will help us to analyze further.
Regards,
Divakar.