Hi Yogita,
Greetings from Syncfusion.
We are able to reproduce the reported issue "RangeStart and RangeEnd value the same as Minimum and Maximum respectively above 200 is not working fine" in the Android platform. We have logged the bug report for this and please find the feedback from below,
If you have any more specifications/suggestions to the bug report, you can add it as a comment in the portal.
We will provide the patch for this issue on or before May 22, 2020. We appreciate your patience until then.
Regards,
Ramya S