After installing iOS 26 Developer Beta on my iPhone 13 mini, I encountered a critical battery issue. The battery percentage was stuck at 1%, and the phone could only be used while continuously plugged in. Despite the low reading, the device remained fully functional — I could use apps, navigate, and perform tasks normally. However, the battery indicator never rose above 1%, and the Battery Health section in Settings showed 0% Maximum Capacity, which is inaccurate. I did not allow the phone to fully discharge, out of fear that it might not turn back on. Restarting the phone and changing cables or chargers had no effect. After restoring the device to iOS 18.7.2 using DFU mode, the issue disappeared entirely — the battery percentage behaved normally again and the health section showed the correct value (about 100%). Observed behavior: • Battery percentage frozen at 1% • Maximum Capacity reported as 0% • Device only functional while connected to power • Issue resolved immediately after restoring to iOS 18 Temporary solution: A DFU restore to iOS 18 (18.5 22F76) immediately resolved the issue. The battery percentage and health readings returned to normal. Additional information: • Charger used: Official Apple 20W USB-C charger • Cable used: Apple USB-C to Lightning cable • Battery health after restore: 100% (replaced)

Updated iPhone to 26 beta 2, everything is ok but battery, battery is changed, not original. My phone can't charge higher than 1% and turns off every 5 minutes, even connecting to wireless charger and cable at the same time don't work, restored iPhone thru iTunes.I hope I will be able to install new beta without any problems because loving the new design, hoping for the best. Thanks. My FB-FB18327769

Updated iPhone to 26 beta 2, everything is ok but battery, battery is changed, not original. My phone can't charge higher than 1% and turns off every 5 minutes, even connecting to wireless charger and cable at the same time don't work, restored iPhone thru iTunes.I hope I will be able to install new beta without any problems because loving the new design,hoping for the best. Thanks.

I have installed WATCHOS 26 Developers Beta in my Apple Watch 6 after installation I found that the battery drains after two hours Now i can not remove 26 and go back to earlier version any ideas

On iOS17, UIDevice.current.batteryLevel is returning values rounded to 0.05, such as 1, 0.95, 0.9.

When developing an iOS app that monitors or transmits the battery percentage (using UIDevice.current.batteryLevel), often expect to get updates for every 1% change in battery. However, on iOS, the batteryLevel property only updates in steps of approximately 5%. For example, the value jumps from 1.0 (100%) to 0.95 (95%), then to 0.90 (90%), and so on. It does not report intermediate values like 0.99, 0.98, etc.

Hello, Can anyone tell me what this means? Or if it's normal? I'm seeing about 10% battery drain per day on sleep, and pmset -g log shows wakes nearly every minute. 2025-06-10 17:10:35 -0700 DarkWake DarkWake from Deep Idle [CDNP] : due to smc.70070000 wifibt SMC.OutboxNotEmpty/ Using BATT (Charge:94%) 5 secs 2025-06-10 17:10:43 -0700 DarkWake DarkWake from Deep Idle [CDNP] : due to smc.70070000 wifibt SMC.OutboxNotEmpty/ Using BATT (Charge:94%) 6 secs 2025-06-10 17:13:49 -0700 DarkWake DarkWake from Deep Idle [CDNP] : due to smc.70070000 wifibt SMC.OutboxNotEmpty/ Using BATT (Charge:94%) 8 secs 2025-06-10 17:14:01 -0700 DarkWake DarkWake from Deep Idle [CDNP] : due to smc.70070000 wifibt SMC.OutboxNotEmpty/ Using BATT (Charge:94%) 6 secs 2025-06-10 17:14:10 -0700 DarkWake DarkWake from Deep Idle [CDNP] : due to smc.70070000 wifibt SMC.OutboxNotEmpty/ Using BATT (Charge:94%) 6 secs 2025-06-10 17:15:01 -0700 DarkWake DarkWake from Deep Idle [CDNP] : due to smc.70070000 wifibt SMC.OutboxNotEmpty/ Using BATT (Charge:94%) 6 secs 2025-06-10 17:16:31 -0700 DarkWake DarkWake from Deep Idle [CDNP] : due to smc.70070000 wifibt SMC.OutboxNotEmpty/ Using BATT (Charge:94%) 6 secs 2025-06-10 17:18:07 -0700 DarkWake DarkWake from Deep Idle [CDNP] : due to smc.70070000 wifibt SMC.OutboxNotEmpty/ Using BATT (Charge:94%) 6 secs Looking at one section of them: 2025-06-10 22:00:46 -0700 DarkWake DarkWake from Deep Idle [CDNP] : due to smc.70070000 wifibt SMC.OutboxNotEmpty/ Using BATT (Charge:90%) 6 secs 2025-06-10 22:00:46 -0700 WakeDetails DriverReason:smc.70070000 - DriverDetails: DriverReason:wifibt - DriverDetails: DriverReason:SMC.OutboxNotEmpty - DriverDetails: 2025-06-10 22:00:46 -0700 HibernateStats hibmode=3 standbydelaylow=0 standbydelayhigh=0 35177 2025-06-10 22:00:46 -0700 WakeTime WakeTime: 0.094 sec 2025-06-10 22:00:46 -0700 Kernel Client Acks Delays to Sleep notifications: [Port-USB-C driver is slow(msg: SetState to 0)(60 ms)] 2025-06-10 22:00:46 -0700 Kernel Client Acks Delays to Wake notifications: [RTBuddy(ANS2) driver is slow(msg: SetState to 2)(68 ms)] [AppleCS42L84Audio driver is slow(msg: DidChangeState to 1)(77 ms)] [Codec Output driver is slow(msg: WillChangeState to 1)(77 ms)] [AppleConvergedIPCOLYBTControl driver is slow(msg: SetState to 1)(118 ms)] [AppleMultiFunctionManager driver is slow(msg: SetState to 1)(121 ms)] [Port-USB-C driver is slow(msg: SetState to 0)(59 ms)] [RTBuddy(ANS2) driver is slow(msg: SetState to 2)(68 ms)] [Codec Output driver is slow(msg: WillChangeState to 1)(78 ms)] [AppleConvergedIPCOLYBTControl driver is slow(msg: SetState to 1)(120 ms)] [AppleMultiFunctionManager driver is slow(msg: SetState to 1)(123 ms)] [RTBuddy(ANS2) driver is slow(msg: SetState to 2)(68 ms)] [Codec Output driver is slow(msg: WillChangeState to 1)(78 ms)] [AppleCS42L84Audio driver is slow(msg: DidChangeState to 1)(78 ms)] [AppleConvergedIPCOLYBTControl driver is slow(msg: SetState to 1)(116 ms)] [AppleMultiFunctionManager driver is slow(msg: SetState to 1)(120 ms)] [RTBuddy(ANS2) driver is slow(msg: SetState to 2)(68 ms)] [Codec Output driver is slow(msg: WillChangeState to 1)(78 ms)] [AppleCS42L84Audio driver is slow(msg: DidChangeState to 1)(78 ms)] [AppleConvergedIPCOLYBTControl driver is slow(msg: SetState to 1)(118 ms)] [AppleMultiFunctionManager driver is slow(msg: SetState to 1)(120 ms)] [powerd is slow(5915 ms)] [Port-USB-C driver is slow(msg: SetState to 0)(64 ms)] [RTBuddy(ANS2) driver is slow(msg: SetState to 2)(68 ms)] [AppleCS42L84Audio driver is slow(msg: DidChangeState to 1)(78 ms)] [Codec Output driver is slow(msg: WillChangeState to 1)(78 ms)] [AppleConvergedIPCOLYBTControl driver is slow(msg: SetState to 1)(119 ms)] [AppleMultiFunctionManager driver is slow(msg: SetState to 1)(122 ms)] [RTBuddy(ANS2) driver is slow(msg: SetState to 2)(68 ms)] [Codec Output driver is slow(msg: WillChangeState to 1)(77 ms)] [AppleCS42L84Audio driver is slow(msg: DidChangeState to 1)(77 ms)] [AppleConvergedIPCOLYBTControl driver is slow(msg: SetState to 1)(117 ms)] [AppleMultiFunctionManager driver is slow(msg: SetState to 1)(120 ms)] [RTBuddy(ANS2) driver is slow(msg: SetState to 2)(68 ms)] [AppleCS42L84Audio driver is slow(msg: DidChangeState to 1)(76 ms)] [Codec Output driver is slow(msg: WillChangeState to 1)(76 ms)] [AppleConvergedIPCOLYBTControl driver is slow(msg: SetState to 1)(118 ms)] [AppleMultiFunctionManager driver is slow(msg: SetState to 1)(119 ms)] [RTBuddy(ANS2) driver is slow(msg: SetState to 2)(68 ms)] [Codec Output driver is slow(msg: DidChangeState to 1)(76 ms)] [AppleConvergedIPCOLYBTControl driver is slow(msg: SetState to 1)(118 ms)] [AppleMultiFunctionManager driver is slow(msg: SetState to 1)(121 ms)] [Port-USB-C driver is slow(msg: SetState to 0)(58 ms)] [RTBuddy(ANS2) driver is slow(msg: SetState to 2)(68 ms)] [AppleCS42L84Audio driver is slow(msg: DidChangeState to 1)(77 ms)] [Codec Output driver is slow(msg: WillChangeState to 1)(77 ms)] [AppleConvergedIPCOLYBTControl driver is slow(msg: SetState to 1)(117 ms)] [AppleMultiFunctionManager driver is slow(msg: SetState to 1)(120 ms)] [RTBuddy(ANS2) driver is slow(msg: SetState to 2)(68 ms)] [AppleCS42L84Audio driver is slow(msg: DidChangeState to 1)(76 ms)] 2025-06-10 22:00:48 -0700 com.apple.sleepservices.sessionTerminated SleepService: window has terminated. 2025-06-10 22:00:52 -0700 Assertions PID 323(powerd) Released InternalPreventSleep "PM configd - Wait for Device enumeration" 00:00:05 id:0x0xd00009032 [System: PrevIdle] 2025-06-10 22:00:52 -0700 Sleep Entering Sleep state due to 'Maintenance Sleep':TCPKeepAlive=active Using Batt (Charge:90%) 14 secs 2025-06-10 22:00:53 -0700 Assertions Summary- [System: PrevIdle] Using Batt(Charge: 90) 2025-06-10 22:00:53 -0700 Wake Requests [process=mDNSResponder request=Maintenance deltaSecs=6474 wakeAt=2025-06-10 23:48:48 info="DHCP lease renewal"] [*process=dasd request=SleepService deltaSecs=979 wakeAt=2025-06-10 22:17:13 info="com.apple.dasd:501:com.apple.intelligenceplatform.IntelligencePlatformCore.Pipeline.FastPass"] [process=powerd request=TCPKATurnOff deltaSecs=227969 wakeAt=2025-06-13 13:20:22] [process=powerd request=CSPNEvaluation deltaSecs=2005 wakeAt=2025-06-10 22:34:18] [process=powerd request=UserWake deltaSecs=7086 wakeAt=2025-06-10 23:59:00 info="com.apple.alarm.user-visible-com.apple.donotdisturb.server.ScheduleLifetimeMonitor.timer,619"]