May 18, 2010
Since upgrading to firmware v50.0.005 my 5800xm started to run out of battery after 10-12 hours. After some tests, uninstalling programs, deleting all WLAN Connections etc I found out that this is caused by unwanted WLAN connections to known WLANs. How can i solve this?This happens only at home or in my office (where I use wlan) , there are no applications running and nothing is allowed to sync automatically. But after some minutes when I unlock my 5800, I can see the wlan antenna - but when I want to check the connection, it disappears.I never had battery or WLAn issues, but since upgrading to v50 when i forget to connect it to the charger overnight the battery has drained and is empty.For finding open WLAn and for easy connections I use WeFi since I own my 5800. This never caused me any problem. But I have read through the Support Discussion and some other boards on the web: There are many others that suffer from battery drain after upgrading to Firmware v50.So please check whether this may also be related to unwanted WLAN traffic on your 5800:I stayed a few days in a hotel where there was no WLAN. I tried to upgrade again to Firmware v50 again via PC and cable, not OTA again. The battery lasted for three days as before (but remeber there was no WLAn available!)As soon as I was back home, the 5800 begain to connect again in standby estimated every 10 minutes to my home WLAN. I can see this in the router´s connected devices. When I unlock the 5800 I see that WLAN is active and connected, a second later, or if I click on the icon, the connection disappears Simply bad, because when I forget my phone charger in the evening to hang on in the morning it is empty.Perhaps these guys have the same problem: /t5/Connectivity/5800-Wifi-Bug/m-p/410781 but I never ever had photo exchange, skype, fringe or else installed. I have changed nothing before or after the upgrade to v50, I have not installed new software or else.
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