My question is, How to check my history of created call and SMS using the SDK?
Call Log is one of the the way to check the history
Check the Navigation bar is on the top of RingCentral App. Press the forth icon (gear) and go to Settings.
Scroll down to the third section which title is "Logs"
you can take help from here - https://developers.ringcentral.com/guide/messaging/pager/sending-pager-messages