MOTO G4 Play Bluetooth Issue Connecting to iSimple FM Adapter in Car

[muttleytm]

I got a new MOTO 4G Play to replace and older Samsung. I like it except for one thing. I have to unpair ("forget") the device and then cycle the radio on and off a couple times and then turn on the adapter and then pair and connect to get it to work. I have to do this each time.

I've contacted that adapter mfg and moto they both point to each other. They even said a new pone won't likely fix the problem. No one is actually interested in solving the problem. I'm sure there are plenty of others in the same situation. The adapter mfg says it is a problem with moto phones.

Are there any bluetooth radio hacks or other versions. I don't know what radio I have or how to find out. I'd rather not go with a complete custom ROM at this time.

Any suggestions on what the problem could be, how to fix, how to address compatibility problems when both mfgs say the other is causing the problem. Is there somewhere to officially complain about BT compatibility issues? Is BT an industry standard or a specific company that licenses it?

It seems like I should have some recourse here, but, so far I've spent a lot of time going in circles dealing with level 1 support people who only fill in forms or read off lists as well as time and money spent on phone calls, being put on hold, etc.

 

[mkollersms]

While Bluetooth is an industry standard, there are different versions (3.0, 4.0, 4.1, etc.) which transmit data in different ways. There are other standards as well, such as A2DP. But for all of this to work, both devices need to be able to detect each others' Bluetooth MAC and store it long term. If one device forgets it has that knowledge, then it won't recognize the others' BTMAC at all.

Changing to a ROM isn't going to fix this (Lineage is notorious for killing BT when you change from cellular to WiFi, and to this day it still isn't completely fixed). What I recommend is going into Apps, looking for Bluetooth Share, and clearing its data. Then try re-pairing to the device.

 

[muttleytm]

I tried clearing the data as you suggested as well as during a hard reset and that doesn't work.

I do have a sequence of steps that works pretty consistently, but, I have to do it interactively. I'm wondering if I could just write a script to do these steps. Some of them like the pairing and the connection take a little time and may need some timing steps. Ideally it could access a signal when the connection is made or not made etc. I could just set it in motion and go about putting on the seatbelt, starting the car, etc while it is working.

I have no idea what commands the different things I interact with use. It involves forgetting the connection, cycling airplane mode on and off, pairing and then after they are paired connecting. Any ideas?

 

[Choven1218]

Some people on the Moto forums suggest disabling Bluetooth Scanning. It seems to work for some people; others report no change in their connection after turning it off.

I'm running LineageOS, and as the previous reply stated, my Bluetooth restarts when changing between WiFi and cell data. I tried Bluetooth scanning on and off, and neither seemed to fix the Bluetooth restarts.