Sony Xperia Z1 Wifi troubles (v. 14.4.A.0.157)

[Anonymous]

Yesterday I received a notification telling me that my Z1 had an update ready (this came as a surprise, considering I though Sony had dropped updates for this particular model), needless to say I updated my phone there and then, although I did do a little bit of research into the update to see what it included. (Hint: Not much.)

Since the update I've been have consistent trouble with my Wifi connection:

1. Wifi turns off when the screen is off, despite my Wifi settings being set otherwise (i.e. Wifi always on).
2. Wifi shuts down randomly when connected - often at night, so I don't catch it - and subsequently drains my Data.

I can't tell if there are other issues as yet, since this is the only one I have noticed thus far. These problems started the moment I updated, and none of my other app settings (such as Juice Defender Plus) have changed, so I see no reason why they would be a contributory factor.

Has anybody else been having similar issues at all?

[Bambino]

Our community member @viridis is the Xperia expert. I've alerted him, so when he comes online he can hopefully give you some helpful advice. 

[viridis]

Go into stamina mode settings and turn off extended stamina.

[Anonymous]

One generic help tip is to perform a hard reset after a firmware update which can cure glitches by clearing out old files.

Make a back up first to preserve saved data.

[Cleoriff]

Thanks for that post @viridis As the Sony expert here your advice is much appreciated ...

[MI5]

In addition to viridis advice I would also look at your JD profile and see what control it has over the wifi settings.

[Anonymous]

@viridis Thank you for your quick response. I have double-checked just to be sure, and I do not have Stamina mode activated (and never have done).

@MI5 I have gone into JD+ and deactivated it's control over my Wifi for the time being, to see if that helps. However, that doesn't explain why it might disconnect Wifi when I am currently connected to a network.

[MI5]

No you're right, it shouldn't just drop out for no reason unless it thinks the wifi connection isn't good enough.
Maybe try forgetting it and reconnecting if it continues to drop out like that.

[viridis · Accepted solution]

Because apps are weird sometimes.
It Definitely sounds like something is cutting wifi for power saving (even tho the mobile data will use more)

[Anonymous]

Well, I left it for a couple of days and it seems to have sorted itself out. I suspect JD+ might have been the cause of the issue, so I shall leave it under my current settings from now on.