Just install another keyboard from the playstore that has Dutch support. Like TouchPal. To have Dutch thought-out the phone unlock your bootloader and then flash the Rom from this forum
Enviado do meu Redmi Note 3 através de Tapatalk
I unlocked it with the non official way and the first time I flashed this rom in TWRP I got a hard brick. The only way was to delete a folder inside the zip file before flashing
Enviado de meu Redmi Note 3 usando Tapatalk
With Redmi Note 3 SD If flashing with bootloader unlocked by the new method that appeared, via updater you'll probably hard brick. Am I wrong?
Enviado de meu Redmi Note 3 usando Tapatalk