In Dallas, you can get an iPhone battery replacement at any Apple Store in the Dallas-Fort Worth area. Apple charges $89 for this service, and they use genuine Apple batteries designed for safety and performance standards[1][5]. However, the warranty does not cover batteries that wear down from normal use[7]. If you have AppleCare+, your iPhone is eligible for a battery replacement at no additional cost if the battery holds less than 80% of its original capacity[5][7].
For third-party services, places like iFixDallas in Plano offer premium quality battery replacements with a 60-day warranty on the replaced parts[3]. Apple does not provide a warranty for third-party repairs, but they will still service iPhones with third-party batteries if they work properly[2].
In summary, while Apple does not offer a warranty for battery replacements due to normal wear, you can get a warranty from third-party providers like iFixDallas. If you have AppleCare+, you may be eligible for a free replacement under certain conditions.
Citations:
[1] https://discussions.apple.com/thread/255837861
[2] https://apple.stackexchange.com/questions/410548/will-apple-service-an-iphone-previously-repaired-by-a-third-party
[3] https://ifixdallas.com/iphone-battery-replacement/
[4] https://www.cellphonerepair.com/common-issues/iphone-4s-battery-replacement
[5] https://support.apple.com/iphone/repair/battery-replacement
[6] https://discussions.apple.com/thread/252875050
[7] https://support.apple.com/iphone/repair
[8] https://www.reddit.com/r/iphone/comments/s7a1el/turned_down_for_battery_replacement/