Weak Wi-Fi signal after Android 6 update

[Ali34]

In new version of Android 6 z3 the phone speed very low and signal wifi very weak is very bad please fix the bug

[Chikod]

Same problems with my z2 tablet. I am having problems there where I never had problems before.  Same issue with different routers. That means that problem is not in router. Low signal and signal loss. 

[xbiranda]

Did you try repairing software with pc companion?

[Chikod]

No, have not done that.  

What can repair software do? Actually what software repair does?  It has nothing to do with WiFi. 

[Malangen]

I have the same problem with my Xperia Z3. Startet after upgrading to 6.0.1.

[villa498]

Same problem as mine. I compared my z2 runnning on marshmallow against my Zultra wc runs kitkat. My z ultra can detect my router maybe 30 paces after the front door. The marshmallow Z2's wifi plummeted after only 10 paces. I hope this is just a bug, if so, please fix it.

[malakhi]

I have same problem after upgrading to android 6.0.1
Only near router signal is good
Tested with tplink and zyxel and dlink routers

[BAUKBECHTUNG]

In the last time my phone is not capable to connect to wifi except being very close to the wifi source and the battery worsened.

What is the reason?
What can i do?

Thank you very much,

Greetings from Germany.

[Uliwooly]

Boot on safe mode and report back

http://talk.sonymobile.com/t5/FAQ/How-to-boot-your-phone-into-safe-mode/m-p/348008#U348008

[Uliwooly]

As for the battery

We'll need more info to better assist you

 

charge the phone 100% use it as you normally would then once the battery reaches 10%

 

settings > power management > battery > take screenshots of:

 

1. the list

2. tap on the graph and take a screenshot

3. back > tap on the top 4 items on the list > take a screenshot of each 

 

post them all here or upload the screenshots to box or dropbox or google drive or etc and post the link

[kimthemuss]

no wifi and no bluetooth!!!!! im out of warranty so ill have to pay for the fix my self. very poor from sony, trading standards here i come this is last peace of sony hardware i buy. ive probability got 5k of sony tech at home and have used there phones for 5 years and now i feel so let down!!!