Changes not to wait always full DEFAULT_TIMEOUT. New DEFAULT_INTERCHAR_TIMEOUT definitiion.
Some other changes to used F() macro, PROGMEM strings, and CHARs.
Some comments in functions not used
Some improvements about millis()
And some question about some code that you comment not to use it but that you have used it in other section of the file.
Please, check them, clear my comments and include this files in the library, but before we will have to check other changes to GPRS_shield_arduino.h and .cpp (just in case)
Please, check them, clear my comments and include this files in the library, but before we will have to check other changes to GPRS_shield_arduino.h and .cpp (just in case)
Best regards,