iFixDallas provides a 60-day warranty on the iPhone batteries they replace. This warranty covers the quality of the replacement parts, ensuring that if there are any issues with the battery within that timeframe, you can return to them for assistance[1]. However, if you are looking for a longer warranty period or coverage under Apple's terms, you might consider purchasing AppleCare+ or visiting an Apple Authorized Service Provider, as Apple's standard warranty does not cover batteries that degrade from normal use[2][3].
It's also worth noting that if you have previously had your iPhone serviced by a third-party provider like iFixDallas, Apple may still service your device, but the warranty terms would not apply to the third-party repairs themselves[8].
Citations:
[1] https://ifixdallas.com/iphone-battery-replacement/
[2] https://techbrowser.co/apple/iphone/iphone-battery-warranty/
[3] https://support.apple.com/iphone/repair/battery-replacement
[4] https://www.cnet.com/tech/mobile/i-replaced-my-iphone-battery-at-home-heres-how-you-can-do-the-same/
[5] https://ifixindia.in/warranty/
[6] https://www.reddit.com/r/iphone/comments/s7a1el/turned_down_for_battery_replacement/
[7] https://www.ifixit.com/News/9524/replacing-your-iphone-battery-heres-what-you-need-to-know
[8] https://apple.stackexchange.com/questions/410548/will-apple-service-an-iphone-previously-repaired-by-a-third-party