topic Re: Z4 Tablet 7.0/7.1 Nougat Bluetooth Battery Drain in Tablets

Z4 Tablet 7.0/7.1 Nougat Bluetooth Battery Drain

Redfoot — Wed, 30 Aug 2017 11:29:17 GMT

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..

Re: Z4 Tablet 7.0/7.1 Nougat Bluetooth Battery Drain

Karlos76 — Fri, 01 Sep 2017 06:22:18 GMT

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

Re: Z4 Tablet 7.0/7.1 Nougat Bluetooth Battery Drain

tom97 — Mon, 04 Sep 2017 18:27:29 GMT

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

Re: Z4 Tablet 7.0/7.1 Nougat Bluetooth Battery Drain

Jetmender — Tue, 12 Sep 2017 10:46:29 GMT

I have exactly the same issue

Re: Z4 Tablet 7.0/7.1 Nougat Bluetooth Battery Drain

Fahadd — Wed, 13 Sep 2017 06:05:57 GMT

same issue :s

Re: Z4 Tablet 7.0/7.1 Nougat Bluetooth Battery Drain

MarlonUk1 — Wed, 13 Sep 2017 07:19:52 GMT

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

Re: Z4 Tablet 7.0/7.1 Nougat Bluetooth Battery Drain

Redfoot — Fri, 15 Sep 2017 16:22:50 GMT

Thanks for the tip, haven't tried that.

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

Re: Z4 Tablet 7.0/7.1 Nougat Bluetooth Battery Drain

Redfoot — Tue, 07 Nov 2017 21:14:31 GMT

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

Re: Z4 Tablet 7.0/7.1 Nougat Bluetooth Battery Drain

satarsa — Wed, 08 Nov 2017 22:47:01 GMT

I have the same problem after upgrade up to 7.1.

Re: Z4 Tablet 7.0/7.1 Nougat Bluetooth Battery Drain

thintin — Wed, 27 Dec 2017 17:31:11 GMT

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

Re: Z4 Tablet 7.0/7.1 Nougat Bluetooth Battery Drain

joyofmvid — Wed, 07 Nov 2018 22:26:13 GMT

I have same problem. My internet research states this is an android 7.1.1 problem and Android Oreo solves the problem.

Please Sony, either offer Android Oreo to Sony Xperia Z4 Tablets or provide a specific android update for this problem.

Re: Z4 Tablet 7.0/7.1 Nougat Bluetooth Battery Drain

Ivanromana — Sat, 26 Jan 2019 01:49:35 GMT

Same here, after update android 7.0 , i miss my android 6

Re: Z4 Tablet 7.0/7.1 Nougat Bluetooth Battery Drain

Tyralyon — Sun, 03 Mar 2019 12:17:12 GMT

A late bump for an old thread, but perhaps it can help someone looking for the solution. It at least seeems to have made a difference on my tablet.

Go to Settings > Location and press the 3 dots in the top right, choose "Scanning", then turn off Bluetooth scanning.