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Mobile World Congress 2019

Sonys Press conference from MWC took place end of February
If you missed it you can watch it here.
Please join the discussion here and share your thoughts on what was anounced here. MWC 2019 discussion.

Z4 Tablet 7.0/7.1 Nougat Bluetooth Battery Drain

Learner
Message 1 of 13
1,865 Views
Message 1 of 13

Z4 Tablet 7.0/7.1 Nougat Bluetooth Battery Drain

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..

 


Screenshot_20170830-122508.png

12 REPLIES 12
One time poster
Message 2 of 13
1,838 Views
Message 2 of 13

Re: Z4 Tablet 7.0/7.1 Nougat Bluetooth Battery Drain

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

Learner
Message 3 of 13
1,815 Views
Message 3 of 13

Re: Z4 Tablet 7.0/7.1 Nougat Bluetooth Battery Drain

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

Screenshot_20170904-201255.png

One time poster
Message 4 of 13
1,775 Views
Message 4 of 13

Re: Z4 Tablet 7.0/7.1 Nougat Bluetooth Battery Drain

I have exactly the same issue

Learner
Message 5 of 13
1,764 Views
Message 5 of 13

Re: Z4 Tablet 7.0/7.1 Nougat Bluetooth Battery Drain

same issue :s

Forum Legend
Message 6 of 13
1,757 Views
Message 6 of 13

Re: Z4 Tablet 7.0/7.1 Nougat Bluetooth Battery Drain

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



________________________________________________________________________________
The Man! The Myth! The Forum Legend! -Scott Sterling
Learner
Message 7 of 13
1,739 Views
Message 7 of 13

Re: Z4 Tablet 7.0/7.1 Nougat Bluetooth Battery Drain

Thanks for the tip, haven't tried that.

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

Learner
Message 8 of 13
1,544 Views
Message 8 of 13

Re: Z4 Tablet 7.0/7.1 Nougat Bluetooth Battery Drain

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

One time poster
Message 9 of 13
1,525 Views
Message 9 of 13

Re: Z4 Tablet 7.0/7.1 Nougat Bluetooth Battery Drain

I have the same problem after upgrade up to 7.1.

Learner
Message 10 of 13
1,297 Views
Message 10 of 13

Re: Z4 Tablet 7.0/7.1 Nougat Bluetooth Battery Drain

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