You can replace the battery! Remove the back of the phone and you will be able to lift the battery out. Reference our guide called "Nokia 1010 Battery Replacement". Remplacement de la batterie du Nokia 1010

When you take off the faceplate you will be able to access the keypad to give it a thorough cleaning. For more information visit our guide. Removing the Faceplate

Yes you can! Remove the face plate and the motherboard to access the screen. For more information look at our guide. Access to the Screen