Thank you for the suggestions. Yes, found a third party library called EspSoftwareSerial and it works fine. And thanks for the alternative solution.

here you go.. just tested and it works fine.. It first sets the wifi mode to both access point and station. then starts the access point and then connects to a network.. However, If I use a configuration like accesspoint name and secret it doesn't work when set the mode as WIFI_AP_STA 'needs some wo...

Search with ESP32 MODE APSTA (Access Point and Station). or follow this link:
https://esp32.com/viewtopic.php?f=13&t=538

Hi, Greetings! I have been using the ESP 32 by Ai Thinker. To my opinion its a great little alternative of my Arduinos... I was trying to port some of my existing Arduino projects to this ESP 32. However, in some cases I need more than two and sometimes three Serial Coms. to interface with the GPS, ...