Generally not recommended.
As we all know, mobile phones emit radiation. Placing mobile phones on the belly will affect the health of the baby, and even cause deformities in severe cases. For the health of the child, it is better not to allow mobile phones, computers and other electronic devices that have radiation. If the product is placed close to pregnant women, it will have adverse effects on both pregnant women and babies.
If you want to do music prenatal education, you can play music on the TV or stereo, which will allow the baby to hear the music clearly and will not affect the baby's health.
Mom and dad can also hum music by themselves so that the baby can more intuitively understand the singing of his mother and father. After birth, he will have the impression that mom and dad sing very nice songs in his mind, and he will take the initiative to talk to them. Mom and dad sing together to enhance the relationship between children and their parents.