The phone is guaranteed to be 100% working, and you can test it at any place you want. Or you can go and replace it at Jarir after it breaks and pay them 380 SAR. There are some scratches due to the cover, shown in the picture. The storage capacity is 512 GB. It's a clean used device and has a warranty from Jarir for breakage or repair. If you replace it after breakage, you pay the replacement cost of 380 SAR.