Does my iphone need a new battery?

It turn off itself even with 60% or30% battery. It won't turn on until it comes up with the battery icon then i charge it then i works. Is it worth buying a new battery for it? I have had it since 2009. Its an iPhone 3gs 8gb.

If I sync JUST music to iPhone on a new computer - do I lose everything?

Hi, my computer is broken and in for repair but I want new music on my iPhone. If I plug my iPhone into my laptop (after unticking 'allow devices to auto-sync') and ONLY sync music… Will I lose everything on my phone or will my music just change?

It suggests in a warning I can only sync to one computer and I'd lose everything - but I don't know if this 'everything' is actually everything - like my pictures - or just all my current music - which would be fine.

Need some help i have an iphone that just won't stop crashing?

So guys i have an iphone 4 also jailbroken with ios 5.1.1 and recently it just keeps crashing all the time and i don't know where these crashes come from i think it must be from one of my cydia app or should i just update my ios to prevent from crashing?
And here's some of my cydia apps
I have barrel -iprotect-iblacklist-displaycandy-zephyr… Sharing-quick reply for sms-confirm sms -ifile-iphone delivery -locationholic-mewseek-safari download enabler-sbsetting
YeH i know its a long list!

Iphone 4s has ben stolen. What to do?

It has a pass code but icloud account is off so i can't find it with find my phone. There's a secret folder app with passcode. I have so many personal info n pictures there. Is there any chances of misusing of it. What should i do now?

Can you do anything to stop someone using your stolen iphone4?

Ok so someone stole my iphone 4.i've had the sim blocked, and the handset has been blocked so that no other sim card can work… But the person who stole it can still use the apps etc.eg they are using my kik messenger account, and whatever else… And is there anyway that I can track where my phone is?

IPhone message shows as Handcent SMS?

So I unlocked my iPhone 5 and downloaded Handcent SMS and then I reset my iPhone and now when I receive a text instead of saying "message or iMessage" it says Handcent SMS and it also doesn't let me send iMessages to other apple products. Any help?

What will happen to my iPhone 4?

My iphone 4 is already jailbreak if i update it to iOS 6 will my jailbreak gone? I purchased my iphone 4 in Softbank mobile Japan. So it's not unlocked. By the way jailbreak and unlocked is the same? Or not? And why? Can you give me a full explanation. I want to update my iphone but i'm worried if the jailbreak will be gone? And if i update my iphone it bring me to a big problem like bug? Or anything?