If you buy a new iPhone you get a 12 months warranty from Apple that will include iPhone battery service. There is also additional service by buying the iPhone Apple Care protection plan that will also include iPhone battery service. The Apple warranty and other protection plan doesn't cover your iPhone repairs for those who have dropped or damaged the iPhone for some reason including dropping it in water or looking to disassemble it yourself. What's more, it won't be covered when you have an unauthorized repair place service it for you.
One of the best ways to get you phone serviced is by using an online website that focuses primarily on iPhones. When you choose on then use one of their repair promises to get the iPhone for many years and they will examine it and let you know what is wrong by it. You will have to authorize the repair as well as in a day or two you will get it during the mail. The best thing about this online service is most of them will return the iPhone to you will all of your data about it whereas Apple won't.
Think about consider if you have owned your iPhone for many years is whether you want to replace the battery and make that phone or indulge in a newer model. The newer models certainly have an overabundance of features so as an alternative to getting iPhone battery service you can purchase a new iPhone instead.
Should you get a new battery they come with a battery warranty for one to ten years depending on the repair service and or battery you use. Then if you need a replacement battery or battery service on your battery you will need to determine if you are the type of techie who loves to get the newest and also the latest in technology and will only keep the new iPhone for a couple of years until a newer and jazzier one comes out. If this is the case you probably don't need to pay attention to the battery warranty that is included with your replacement battery when you won't generally demand it.
There are many places that provide iPhone service whether for any battery or other issues. If you choose an online repair site they will access your iPhone before they service it and allow you to know what the problem is and how much it will cost to correct it. Then the choices yours.
If you want to decrease your battery wear there are many things you can do. You can switch off push applications to reduce battery wear. You can fetch new data manually rather than having it come automatically which reduces battery wear. If you are using auto check for emails you can delete some of the email accounts so it checks fewer accounts. Vacation applications that prevent screen dimming draws on the battery so you can rely on them less. Basically it's using automatic options less often that save the battery.