My cell phone...

Hi. I am going to talk about my cell phone.
I bought a cell phone by my self about 15 month ago. But I broke it after half a year.
It was not to be able to tell and send mails. So I went to phone shop and I give to repair it. It cost over 5000yen. After about 2weeks, I got renew one. It was shinny and looks brand-new. But, it was broken after 1 month!! I could not believe it! I think it is not my responsibility. But I can not go phone shop again because I have no more money. I pay 2000yen every month for this machine. And I pay about 10000 yen as charge. It was stress to me! I can not repair again so I do not use it now. I was given my sister’s old cell phone so I borrow it to use.
But it was like new phone so I want to use… What should I do?(165words)