Z4 Tablet 7.0/7.1 Nougat Bluetooth Battery Drain

[Redfoot]

Hi,

I had no problems on Android 5.0 or 6.0 but after upgrading to 7.0 I started to development massive bluetooth battery drain - 80 to 90% or more of the battery usage used by bluetooth.

Whilst on 7.0 I did a factory reset. The issue went away immediately but then gradually came back again.

I've since upgraded to 7.1 latest version but the issue remains.

I use my tablet mostly as a work terminal via Citrix with the BKB50 keyboard and a bluetooth mouse so I leave bluetooth on all the time as I often need to use it. I turn both the keyboard and mouse off when not using them so bluetooth stays enabled on the tablet but not being used by any bluetooth devices.

See screenshot below..

[Karlos76]

Exactly same problem with my tablet. Even when not in use, if the bluetooth is turned on then it contributes to >95% of battery drain. It is draining twice as fast too.

Would welcome any updates on how to fix this

[tom97]

Same problem with my Z4 Tablet. I use the original sony keyboard BKB50. I am waiting also for a fix.

[Jetmender]

I have exactly the same issue

[Fahadd]

same issue :s

[MarlonUk1]

Hello

have you all tried to perform software repair using Xperia Companion?

after the repair. do not install any apps yet, and try to observe the bluetooth performance

[Redfoot]

Thanks for the tip, haven't tried that.

Does it work differently from factory resetting from the device itself?

[Redfoot]

okay so I've wiped the tablet using the Sony Companion software and installed the latest version fresh.

Surprise surprise, Bluetooth battery drain is back.

Can anyone offer any suggestions? 

Thanks

[satarsa]

I have the same problem after upgrade up to 7.1.

[thintin]

Same problem here. Bluetooth draining full battery in a matter of hours! Has anyone found a fix for this?