Thank you for your review.
We are sorry to hear that your experience did not meet your expectations.
This model is designed to operate only on the frequency bands specified in the product description.
Its effectiveness depends on the local network frequencies used in your country and the signal strength in the surrounding area.
If you believe the device is not performing as expected, please contact our support team with your location (country) and a brief description of the networks you tested.
We will be happy to review the case with you and provide technical assistance.
Customer satisfaction is important to us, and we appreciate the opportunity to help.