Abstract: A mobile terminal performs communication operations for maintaining a voice or data call via a wireless AP of a WLAN. During this time, the mobile terminal identifies a RSSI value and a SNR value of an RF signal of the wireless AP. When the RSSI value is less than a predetermined RSSI value, and the SNR value is less than a predetermined SNR value, the mobile terminal provides an indication to switch the communication operations from the WLAN to a WWAN. However, when the RSSI value is less than the predetermined RSSI value, but the SNR value is greater than the predetermined SNR value, the mobile terminal provides an indication to maintain the communication operations in the WLAN. In a concurrent process, the mobile terminal determines a transmission error value for data packet transmissions based on a count of data packet errors.