100% correlation with main instability and battery...

Question

100% identification of the main instability and battery problem of Lumia 800
The headline is very pretentious, I admit.  However, I think I can now point to the problem.  Many Lumia owners are baffled by the nature of their problems – they are unpredictable and intermittent and manifest themselves in many ways. 
I am NOT talking about “static” bugs such as:
inability to charge the battery to 1,450mAh,
the problem to end a call or the impedance of head-phones and audio quality
Extremely slow start-up after battery drain to zero
For many of Lumia owners, the phones are perfectly usable, have decent battery life, and then, a series of strange problems out of the blue, you panic to identify what’s going on, switch everything off, hard-reset, etc. and wow, suddenly it looks OK, stable and jolly again, only to go into problems after a while.
The problems I am talking about are intermittent, unpredictable and are impossible to replicate at will, mainly classified as:
Freezes;
Self turning offs and self-restarts;
Intermittent drain of battery.
As above, it is not possible (at least for me) to replicate the conditions that cause problems intermittently, but I think that I now know at least one common thread – the “Current” in the “Battery Status” page in the “Diagnostic” page.  
I found that during all the intermittent problems, no matter that I switch-off everything (including 2G rather than 3G) and even after hard-reset, the Current is higher than the “normal steady state” that I think is about 150-160mAh.  Whenever the “Current (Discharging) is higher than 160 (after a brief transitional time), expect troubles.
I can only speculate that some “rogue” process is looping on the CPU in the background (unfortunately there is no Windows PC style “Task Manager” that can show all processes) – a possible support for this hypothesis is that the back of the device is warm and sometimes hot to touch ALWAYS when these kind of problems strike.
Why isn't Nokia updating us about this issue?  Admission and promise to resolve it (if this can be solved – I wonder it other WP7 phones have similar problems, if yes, this is the end...) will keep many loyal customers to Nokia.  We are getting tired of bugs and problems and only in the case of the battery, Nokia admitted it. Please Nokia, don’t push us into the arms of the iThing!!!

Answer 1

Hello Fabio
Its a strange issue but firstly you can check the power settings in the wireless card properties. Please go to Device Manager then right click on Wlan card ->Properties.
There you should find a Advanced tab. All settings should be set to Use default value and Highest.
Best regards