Although izzylink does not rely on home Wi-Fi network, it uses the same 2.4 GHz wireless spectrum to form its dedicated private wireless network in order to group with other izzylink speakers. When there are too many devices using the same 2.4GHz frequency band, interference may occur, resulting in stuttering of music. To reduce wireless interference: 1. Select a different wireless frequency channel on other Wi-Fi devices. 2. Reduce the number of devices that are using the 2.4GHz frequency band in your home. 3. If your router supports 5 GHz connection, switch the connection frequency band of your smartphone to 5GHz. 4. Some common household appliances, such as microwave oven and digital cordless devices, may interrupt with 2.4 GHz band wireless connection. Consider moving these wireless devices away from izzylink speakers.