#include <bits/c++allocator.h> while using TTGO T-Call ESP32 SIM800L Module

[PeteKnight]

You’re using an outdated method.

Read this link…

BlynkSimpleSIM800.h problem: No such file or directory

I’m not sure where you found this sketch, but it seems to use a very old method that isn’t supported anymore. In the Arduino IDE go to Example > Blynk > Boards_GSM > TinyGSM_SIM800_SIM_900 and you’ll see the currently supported method. Pete.

Pete.