I use the love.keypressed module to erase chars.
I tested my app on 3 different devices, and it worked well on my Samsung Galaxy S5 and on an I-Inn tablet.
The behavior is correct, I can erase my strings well.
But when i tested it on a Lenovo a7600h it didn't work. When I press the backspace button for the first time it works well, but when I press the next times it doesn't works.
However, I can fix this bug using love.keyboard.setKeyRepeat(true)
Sorry for my bad english.