Hello every body
my PCB and programm work great
i have only one problem and try many solution but without result
on power ON GLCD SSD1963 start display
but when SIM800L start connection to the network ( you can hear the noise in the PC speaker tet tett tett....)
SSD1963 go to reset and the GLCD stop display it back only when i make RESET
SIM800L powered by Lm2596 4.0V
GLCD powered by regulator LD1117S33TR (1000µF + 10µF)
please if you have any solution tell me
thank you so much for reading my post