Samsung Galaxy S2 battery issue

[missionimpossible]

I have an S2 since October last year (almost a year). When my battery is on half (usually by midday), it suddenly drops to empty.

This is based on the assumption that the phone has had a full charge the previous night. I have data activated during the daytime and on a few occasions use my phone as a wi-fi hotspot due to the lack of internet where i work.

Can anyone advise the cause of this?
Should I replace my battery?

I am aware that the S2's are quite thirsty on battery and somehow have gotten used to it.

 

[Spizz]

Getting to midday on half sounds right if you've been using it a fair bit. But dropping suddenly to empty is very suspect. I imagine you're still under warranty so get take it in and get a new one before October.

I easily got a full day out of my S2 and was usually on 60-70% at lunchtime with average use.

 

[Defunct]

I have an S2 since October last year (almost a year). When my battery is on half (usually by midday), it suddenly drops to empty.

This is based on the assumption that the phone has had a full charge the previous night. I have data activated during the daytime and on a few occasions use my phone as a wi-fi hotspot due to the lack of internet where i work.

Can anyone advise the cause of this?
Should I replace my battery?

I am aware that the S2's are quite thirsty on battery and somehow have gotten used to it.

I had this problem when I was overseas, if I remember, I had to let the battery drain fully, then take it out for a few minutes, then put it back in the phone.

Also just try taking out your battery for a few minutes and putting it back in, sometimes the S2 thinks it has a certain amount of battery but it actually has half that amount.

You will see sometimes it says full, then you take the battery out and then it says 50% when you put it back in.

I ending up flashing my phone again as I was also having some other battery issues and ICS 4.0.3

 

[mercurial]

Sounds like the fuel gauge chip is acting up. The above suggestion will work but you can also install the Siyah kernel and a programme called EXTweaks. EXTweaks has an option to reset the fuel gauge chip. That will solve it.

 

[OGroteKoning]

Sounds like the fuel gauge chip is acting up. The above suggestion will work but you can also install the Siyah kernel and a programme called EXTweaks. EXTweaks has an option to reset the fuel gauge chip. That will solve it.

I would agree with this, but if you are going to take it for warranty repairs, rather don't root it.