Which Pixel phones are covered by the idle battery drain fix?

Google lists the Pixel 9, Pixel 9 Pro, Pixel 9 Pro XL, Pixel 10, Pixel 10 Pro, Pixel 10 Pro XL and Pixel 10a as receiving the fix in the July build. The Pixel 8a and Pixel 9a are scheduled for the September Quarterly Platform Release instead. The Pixel 7 and Pixel 8 are not named at all.

What build number contains the Pixel battery drain fix?

Build CP2A.260705.006, released as the July 2026 Pixel update. You can check yours under Settings, About phone, Build number. The fix was not mentioned in the published changelog, so the build number is the only way to confirm you have it.

How do I test whether my Pixel has the idle drain bug?

Enable Airplane Mode, note your battery percentage, and leave the phone untouched and unplugged overnight for six to eight hours. A healthy Pixel loses only a couple of percent. A double-digit drop with all radios off points to the idle-state fault rather than a background app.

What caused the Pixel idle battery drain?

According to analysis shared by affected owners, the GNSS satellite positioning subsystem failed to enter its low-power state and kept firing hardware interrupts. That prevented the Tensor processor from reaching Deep Doze, the deepest idle state Android uses, so the phone kept drawing power while apparently doing nothing.

Is the Pixel battery drain bug actually fixed?

Google has marked the report as fixed, but a significant number of owners say their drain continued after installing the July build. It is not currently clear whether the patch is incomplete or whether some phones have a separate fault with similar symptoms. The public issue tracker is where any change in status would appear.

Google Marks Pixel Idle Battery Drain Fixed, Owners Disagree

What the bug actually did

Reports began stacking up shortly after the March 2026 Pixel Drop. The pattern was specific and unusual: phones lost charge quickly while sitting untouched, and the drain continued even in Airplane Mode with every wireless radio switched off. That last detail is what separated it from ordinary background-app drain, which stops when the radios do.

The diagnosis that emerged from owners digging through kernel logs in April pointed at the GNSS subsystem — the satellite positioning hardware. It was failing to drop into its low-power state and instead firing continuous hardware interrupts, which kept the Tensor chip from ever settling into Deep Doze, the deepest idle state Android uses to conserve power. A phone that never reaches Deep Doze burns battery all night doing nothing.

Which devices are covered — and which are not

The device list attached to the fix is narrower than the list of phones owners reported problems on, and that mismatch is worth spelling out clearly.

Fixed in the July build (CP2A.260705.006): Pixel 9, Pixel 9 Pro, Pixel 9 Pro XL, Pixel 10, Pixel 10 Pro, Pixel 10 Pro XL and Pixel 10a.
Waiting until September: Pixel 8a and Pixel 9a owners are told the fix arrives with the September Quarterly Platform Release, not before.
Not addressed: Pixel 7 and Pixel 8 appeared in early complaints but are absent from the resolution entirely. No timeline has been given for either.

If you own a Pixel 7 or Pixel 8 and have been tracking this thread hoping for relief, that is the practical takeaway: nothing has been promised to you.

How to check whether you already have the build

Open Settings > About phone and look at Build number. If it reads CP2A.260705.006 or later, you are on the release Google says contains the fix. If it does not, go to Settings > System > Software updates > System update and check manually — staged rollouts mean plenty of phones sit a version behind without any prompt.

How to tell if your drain is this bug

Because the fix was never listed in release notes, confirming it yourself is the only reliable route. The airplane-mode test is the cleanest one available:

Charge to a known level, enable Airplane Mode, and leave the phone untouched and unplugged for six to eight hours overnight.
Check the remaining percentage in the morning. A healthy Pixel should shed only a couple of percent across that window.
A double-digit drop with all radios off points at the idle-state problem rather than an app misbehaving in the background.
Then open Settings > Battery > Battery usage. If no app accounts for the loss, that absence is itself the signal — the drain is happening below the app layer.

Owners who ran that test after installing the July build are the ones now reporting no improvement. Whether the patch is incomplete, addresses only one of several causes, or some phones are hitting a separate fault that looks identical from outside, the current evidence does not settle. The tracked report remains publicly readable on Google's issue tracker, where any revision would appear first.

What you can do in the meantime

None of the usual advice fixes a kernel-level idle fault, but a couple of steps reduce the damage. Turning off high refresh rate is the single biggest lever on recent Pixels — we covered that in our guide to improving Pixel 10 Pro battery life by disabling Smooth Display. Restricting location access to "While using the app" is also worth doing, given where the fault sits.

Pixel fixes often arrive quietly and land unevenly, as happened when the Pixel 10 received its overdue GPU driver upgrade. If your overnight numbers have not moved, adding your model and build number to the tracked report is more useful than opening a fresh one.