1. adijosh2011's Avatar
    I degraded my Lumia 1520 from 8.1 to 8.0 because of heating and battery drain by Nokia software recovery tool.

    Even after degrading to windows 8 battery drain problem still exists.(no more battery heat).

    what shall I do is my warrenty void ? Shall I give the phone in Nokia care??
    07-18-2014 03:59 AM
  2. ven07's Avatar
    If you downgraded to 8.0 you can bring the phone in :) Your warranty is not voided because they can't prove that you had 8.1 :) you should remove the dev preview app tho.. However if the phone is fairly new then battery drain is to be expected :)
    07-19-2014 12:11 AM
  3. revanthpallagani's Avatar
    If there is no heat then chances are it is because of battery calibration. Use it for a couple of weeks, make sure you always charge to 100% before plugging out.
    You can even try the 'drain out completely and charge to 100' method. That definitely helped me.
    ven07 likes this.
    07-19-2014 02:32 AM
  4. adijosh2011's Avatar
    If there is no heat then chances are it is because of battery calibration. Use it for a couple of weeks, make sure you always charge to 100% before plugging out.
    You can even try the 'drain out completely and charge to 100' method. That definitely helped me.
    update:

    battery life has improved because of unknown reasons..2days passed n it still is 45%
    07-19-2014 10:17 PM
  5. revanthpallagani's Avatar
    That's good news.. A new phone or a new OS will need some time to understand your battery capacity based on your usage. I don't know about 1520's battery but 45% after 2 days sounds very good.
    07-19-2014 10:49 PM

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