The latest generation of smartphones are designed to support multiple Bluetooth connections at once.
In theory, Android devices are able to handle between 4 and 8 connections and iPhone devices will run up to 6. However, some smartphones, even brand new, have variable Bluetooth performance. For those ones, connection problems with the app/device could sometimes be observed. Of course, we are here to evaluate your device performance if you need us.
Do not hesitate to contact our Customer Happiness Team in case of doubt : firstname.lastname@example.org.