Peace, mercy, and blessings of God be upon you. Excellent booster, nothing wrong with it, guaranteed. Reason for selling: It does not penetrate strong old walls. For your information, it is fully functional. It was purchased from Jarir Bookstore, and the signal is full at Jarir. The defect was found with the walls, it does not penetrate them. Price: 200 Serious buyers only. Number: (( Phone number appears when clicking the contact button ) )