Hello, Welcome to the Community. We understand the frustration of audio only playing throughthe phone when connected to Bluetooth. In order to help alleviate the annoyance with the Bluetooth audio being picky on what it plays, it is best to try all the steps in this guide first: https://www.samsung.com/latin_en/support/mobile-devices/how-to-troubleshoot-when-bluetooth-headset-a... Additionally, verify compatibility with the Bluetooth device you are attempting to play audio through, as not all third-party devices are fully compatible guaranteed. There could also be a third-party application responsible for this behavior, in which case, Safe Mode can help rule that out: https://www.samsung.com/us/support/answer/ANS00062983/ If the behavior persists under Safe Mode, you can try the resetting of network settings you mentioned. It won't hurt anything, just makes you have to repair devices, reconnect to certain networks, and help resolve many connection difficulties. Simply navigate to Settings > General Management > Reset > tap Reset network settings > tap Reset settings > tap again to confirm (may have a security prompt such as a pin) If that didn't help either, it may be time to try a factory reset. Make sure to back up everything you do not wish to lose, and follow the steps carefully, as this will be like a fresh start for your device: https://www.samsung.com/us/support/answer/ANS00062029/ We also recommend submitting an error report to provide feedback to the developers: https://www.samsung.com/ae/support/mobile-devices/raising-an-error-report-via-samsung-members-app/
If the troubleshooting is not helpful, the phone will need to be evaluated by a certified technician. You can use the following link to find a list of service centers in the U.S. that can do the repair: http://www.samsung.com/us/support/service/location or by contacting customer support at 1-800-726-7864.
