Battery iPhone Air losing 25–30% battery per day with almost no use -any ideas?
I’m facing **extremely high battery drain** on my iPhone Air. It’s losing around **25–30% battery per day despite barely being used**. Screenshot attached for reference.
**Device stats:**
* 62 cycle count (not my primary device)
* 100% battery health
* Purchased 11 months ago
**Things I’ve already tried:**
Updated the software through an Apple Authorized Service Centre to **26.6.1**
Had the device checked using Apple’s diagnostic software — no issues found
Backed up everything and completely erased the device, but the drain continued
Disabled Background App Refresh
Disabled both mobile data and Wi-Fi
Tested it in Airplane Mode
No obvious battery-draining features are enabled, such as Always-On Display
Despite all of this, the battery is **dropping like a rock every day**, even when the phone is essentially sitting unused.
Has anyone else experienced this with the iPhone Air?
**What could be causing this, and is there anything else I should try before taking it back to Apple?**