Bluetooth device disconnects when Wi-Fi is lost. A bug?

[Harlan70]

Hi.

I am having problems with Wi-Fi at home (don't know why yet), but the strange thing is that when I lose Wi-Fi, my smartwacht Pebble (linked via bluetooth) also disconnects.

I've tried Xperia SP and Xperia L phones, both brand new and just updated.

In Xperia L, the phone is unable to reconnect with Pebble. I have to disable and enable manually Wi-Fi on my phone and then it can link with the smartwatch again.

In Xperia SP, Pebble can reconnect in a few seconds.

I asked about this in Pebble forum and get this answer: "Sounds like a bug in the BT implementation on the ROM your phone is running, I've seen similar bugs before on flaky kernels and roms"

So, it could be a bug? Anyone having problems with other bluetooth devices when Wi-Fi fails?

Or just incompatibility between Xperia SP and my fashionable Pebble? 

[six3seven]

Updated my Z1 to 4.3 last week. Pebble constantly disconnects and reconnects. I have noticed that if I connect my Motorola bluetooth headset but don't play any music, the BT link drops. This means if I was using the headset to await a call, the headset would stay connected for a few seconds, then drop.

I suspect in my case the phone is dropping the BT because it's idle. If I run the headset with music playing, the Pebble stays connected reliably.

I'm really annoyed at this development in 4.3. In 4.2.2 it was stable.

[Harlan70]

Finally, I have noticed that, in Xperia SP, Pebble disconnections have nothing to do with problems in Wi-Fi. It just disconnects and reconnects occasionally, as Z1 issue related before.

I just turn off Pebble disconnections alerts, and never lost a notification, up to now... But this should work better.

Pebble support simply tells me that the smartwatch needs a stable BT connection, and Sony tells me they can not guarantee the compatibility of their products with others.

So, who should fix this?

[six3seven]

I'm using Bluetooth Keep alive app from play store and the link is pretty stable. You have to start it as a service first, then use the pebble app to connect the phone. If not reliable, try the two '(more reliable)' options. I'm having good success with the 'Show Connected' option selected.

[Harlan70]

Ok, thanks.

Another app that does what the OS is supposed to do...

[Harlan70]

I've installed Bluetooth Keep Alive but app crashes when I connect Pebble. Then, service seems to recover, but I don't know if it is doing something useful to me. Pebble is connected but app tells me only: "BTKA is awaiting for a connection"...

Let's see...