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Help My phone may have a virus

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Donald17

Lurker
Hello guys, Im new to this forum so sorry if Im posting to the wrong thread/whatever.

My phone has been acting pretty weird lately. The battery has been sinking down much faster (btw, my phone is about a year old now), but I didnt really notice it, because I thought that maybe that is because I use it a lot. Secondly, it started shutting down, and then on by itself. Its been really annoying. However, this mostly happens when I use it, what Ive noticed is, that the phone's screen starts flashing, the network cion in the top right says its not available, and then after a few seconds my phone turns off. Maybe this has soomething to do with the battery, becase my phone has been dropped a few times so far, furthermore, I have been kinda careless with my battery by putting the phone charger out of the phone before its fully charged, etc.
I also have downloaded some games from wapdam.com , which obviously isnt a google play site, and the games could have been infected. I've scanned my phone with quite a few anti virus apps like CM antivirus security, 360 antivirus, Malware bytes. CM antivirus found 4 threats on my phone, which I deleted, but Im pretty sure that it wasnt really deleted, or the free antivirus apps just dont find all the malware on my phone.
Ive also reset my phone, but it didnt help at all.

So, should I take my phone to a mobile service place where it maybe can fixed, or can I do something by myself?

Samsung Galaxy S2, 4.1.2 Android
 
If the phone is not rooted and a factory reset hasn't changed anything then it's very unlikely that the problem is malware (viruses are a specific form of malware that can spread by themselves, rather than relying on you installing them. None have been reported for Android). If you think about it, real malware doesn't want to attract your attention by crashing the phone, it wants to get on with its business without you suspecting. Though if you found threats in the apps downloaded from that site I'd definitely avoid the place in future!

The battery is a possibility: they should last more than a year, but if used heavily, particularly if drained completely on a regular basis (not good for Li-ion) it might be showing its age. Also you say the phone is a year old, but was it new when you got it? I only ask because the S2 is a 4 year old model. Another possibility if it tends to crash when being used heavily would be something overheating. Unfortunately what you describe isn't specific enough for me to diagnose it over the internet, but if a reset didn't change anything then hardware is the most likely answer. A new battery might be a relatively inexpensive fix, but it also might be something more serious.
 
Thank you for your reply. I am myself coming down to the conclusion that this may not be a malware thing. I guess this has something to do with the battery, but the one thing that is really confusing me, is that when the phone starts crashing and shut down, the Network not available shows up everytime, so thats the only thing that confused me, because I dont think that a battery would cause it to do so.
The phone was brand new when I got it last March, the model is older than that, but it wasnt used at all before I got it. I have been using my phone daily and draining the battery, and even though the phone could only last about two days by itsel when being minimally used, I had to charge it daily most of the time, I have been using it pretty hard.
Anyways, are the S2's models batteries even available to buy at this time, with the model being 4 years old?
 
Moreover, I remember something. I dont know if these is a coincidence, but the crashes dont happen while Im using my phone when its charging. This may be a complete coincidence, because when my phone is charging I dont use it as much, but when I do, there are no crashes, it shuts down only when the phone is not charging.
Also, my phone tend to crash a bit before hand, so I used to remove the battery, because there was no other way for it to unfreeze, which I figure did damage the battery a lot. And of course, after the crash, battery says that it has only like 1 to-15 percent of battery, even though before the crash it had much more left, so I had to always charge the battery after the crash, which also probably messed it up.
 
Pulling the battery won't damage it. However, the battery showing a significant charge before the crash then being empty afterwards suggests that either the calibration is badly out or may indeed be a sign that the battery is suffering. It certainly very strongly suggests that the battery is the cause of the shutdown, one way or another.

I'm sure you can find third party replacement batteries for an S2. You can probably also find third party batteries which claim to be the original one (I've met that little con before now). How easy it is to find original batteries I don't know.
 
You'll probably find an original battery on Amazon :thumbsupdroid: I bought one for my s3 a few months ago for £6 ($9)
 
Thank you, funkylogic Ill see if I can find it. However Ill try to take my phone to mobile service to check if this maybe is a hardware problem, before turning off the no network available sign trips my off. Btw, I was charging my phone today, and it said it was fully charged with 100% battery, and when I unplugged the charger, the phone instnatly showed that only 89% of battery is left, so there was definitly some damage done to the battey itself.
 
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