Never had an issue until I recently had to replace my phone. I paid $25.00 and received the worst phone ever!!!! It's the ZTE N818S. I FINALLY talked to a human on the phone (whom barely could speak English) Just for him to tell me that even if I send the phone back, there are NO return of the funds I spent for it. In broken English I was repeatedly told, "all sales are final. " Needless to say, I am EXTREMELY UPSET.