Move your AT&T Wireless Internet to an area with a stronger cellular signal, typically near a window or outside wall. Note: Three to four green/blue bars indicate a strong signal and is recommended for optimal performance. Less than three bars indicates a moderate signal and may be sufficient.
Ensure that other connected devices are not transferring a large amount of data. Note: View connected devices by checking the Connected Devices section of the AT&T Wireless Internet Manager. A phone call in progress may slow down data transfer speed.