If you plug all her holes , she'll either explode or simply sicken and die. I don't think anyone would want to have rotting piece of beanpaste attached to their cellphone.
kurutto-kun said: You would need to use a syringe on a constant basis to kep it alive and suffering
Or if you could take the keychain part and make it a tiny, tiny pipe and put a tiny, tiny reservoir in your phone, you could continuously pipe Something into the yukkrui. Either OJ (for happy healing times!) or sedative (keep it from making a fuss!) or both (cross the streams!)