When taking apart my old cell phone, I had noticed the screen was an apart module with a seperate chip. So I began to search on the internet to find if the screen would be able to be powered by an arduino. Short answer: yes, long answer: Yes, but the only sources are from poland.
I've got these websites: http://majsterkowo.pl/wyswietlacz-ze-starego-siemensa-m55-sterowany-przez-arduino-termometr-ds18b20/ https://mindogas.wordpress.com/2012/06/27/arduino-uno-siemens-m55-lcd-ekranas/
They say the screen uses SCL and SDA, but they don't use the build in I2C bus on the arduino.. When I follow the instructions carefully, the backlight lights up, but nothing, literally nothing, is able to be printed on the screen. I can't do anything with it..
Connections are good, I've double checked them with my voltmeter.
Does anyone know what I could've done wrong..? Thanks in advance!