https://support.apple.com/iphone/repair/battery-replacement
There is no “DRM” in their battery.
If you had the wherewithal, you could do it yourself
https://www.ifixit.com/Guide/iPhone+6s+Battery+Replacement/5...
The units weren’t “faulty” all batteries degrade over time.
https://support.apple.com/iphone/repair/battery-replacement
There is no “DRM” in their battery.
If you had the wherewithal, you could do it yourself
https://www.ifixit.com/Guide/iPhone+6s+Battery+Replacement/5...
The units weren’t “faulty” all batteries degrade over time.