The connection with another phone/tablet doesn't have an effect on the device use since everything related to your OBDeleven usage is tied to your OBDeleven account, so you can connect an unlimited number of phones/tablets to your OBDeleven device provided they meet the minimum specification.
Keep in mind that our FirstGen (White) OBDeleven devices are not compatible with iOS phones/tablets. NextGen (Black) OBDeleven devices support Android, iOS and HarmonyOS.