Hard reset after latest 8.1 Update - battery life improved tremendously

[1airlee]

I did a hard reset after the latest 8.1 update and my battery life is amazing. I haven't charged my Lumia 928 since 9pm last Sunday night and I still have 30% remaining. I have all notifications on with banners, apps running in back ground and used it heavily.

With the easy reset and restore including your start screen, so easy and was a breath of fresh air for my phone.

Guide me hard reset my Lumia 920 phone please !

 

[neo158]

Guide me hard reset my Lumia 920 phone please !

Settings > about > reset my phone

 

[1airlee]

Settings > about > reset my phone

Tks you much.

 

[hairychad]

Settings > about > reset my phone

If you want the high res files of the Lumia back them up manually in explorer...

 

[hairychad]

I'm only a couple of hours in though so can you clarify the battery saver?
A) battery saver if you get to 20% or less
B) battery saver app
C) Cortana battery saver settings
D) other

It was looking good after a hard reset... Reasonable usage... Started at 9am, 80% by noon, them started dropping.. Now at 26%...
Please answer the question as to what the battery saver is as mentioned above..
Does it harm having insider pro running?

 

[HTC13]

A friend of mine disabled internet explorer from running in the background and it tremendously helped his battery life.