My cell phone My Life!

My sister wanted to borrow my cell phone as she has given hers back to her company. To be honest with you I think that is her problem. She has to know how to solve it and not asking me to borrow my cell phone.

My cell phone is my life because I am having it near to me all the time. It is use for emergency and everything matter using the cell phone. I gave her RM$30 to top up her cell phone that she has not use for few years.

I do not know if the sim card can still be used. Anyone care to tell me? She is using prepaid card.