Last updated: December 1st

Looking for the Pebble mobile app changelog?

What’s new in PebbleOS?

| Dec 1, 2025 | PebbleOS v4.9.91 | New Features

• Quiet Time Settings: Added "Notifications" toggle option to control notifications during Quiet Time
• Notification Timeout: Added 30-second option to notification timeout settings
• Health: Replace health nag with one-time insights onboarding prompt
• Sleep Tracking: Now displays yesterday's sleep data if today's is not yet recorded
• Activity Thresholds: Decreased sleep notification trigger thresholds
• ANCS Recovery: Auto-recover from lost ANCS (Apple Notification) subscriptions
• Banking Apps: Added European neobanks to ANCS notification handling
• Phone Calls: Use proper resource for iOS Phone app during calls

Bug Fixes

• Fixed transition animation for settings
• Fixed Low Power Mode not exiting when charger is connected
• Fixed use-after-free bug in voice reply | | --- | --- | --- | | Nov 26, 2025 | PebbleOS v4.9.88 | - Added support for left-handed UX (Thanks Claudio!)
• Weather and Reminder apps are now enabled (pending app support) | | Nov 17, 2025 | PebbleOS v4.9.83 | - Added single-click quick launch options
• Fixed issues for users in the Eurpoe/Dublin Timezone
• Added some logs to help find issues with ANCS. Having notification issues on iOS? Please update to this version and report if they continue. | | Nov 6, 2025 | PebbleOS v4.9.76 | - Adjusted low power shut down to 2%
• Adjusted battery capacity (~400h) so ‘1 day battery left’ warning should be more correct
• Disabled old 'welcome' message
• Enforce single phone pairing
• Sizes for Flint have been increased in SDK
• Fixed crash when pairing a new phone
• Fixed issues with alarm popup dismiss | | Oct 24, 2025 | PebbleOS v4.9.71-stop0 | - Improved responsiveness of voice input- Fix Notifications not opening in notifications app- Ensure sleep and step tracking work on first boot |

What should work in PebbleOS for Pebble 2 Duo🤞

• Time
• Notifications
  • dismissing notifications on phone from watch
  • (Android only) replying with emoji or canned replies
• Calendar (configure in mobile app, no actions or invites yet)
• Music control
• Compass
• Voice input
• Phone calls
• Alarms
• All settings (vibration, quiet time, 12/24hr, etc)
• Watchfaces
• Apps
• Appstore and locker (via Rebble.io sign in)

What isn’t working or built yet 🤦

• Battery life on on Pebble 2 Duo is not fully optimized yet. Expect 10-14 days of battery life. Soon we’ll optimize it for 30 days of battery life with a firmware upgrade.
• Backlight strength controlled by ambient light sensor
• Speaker and barometer on P2D
• Send Text app

⚠️ How to troubleshoot and fix Pebble 2 Duo problems ⚠️

Full changelog

• Some more accelerometer tweaks | | Sept 26, 2025 | PebbleOS v4.9.9-core57 | - Fix issue where steps and sleep were not counted correctly | | Sept 22, 2025 | PebbleOS v4.9.9-core52 | - Increase microphone gain and implement automatic gain control
• More Accel fixes for backlight triggers | | Sept 17, 2025 | PebbleOS v4.9.9-core47 | - Fixed issue that caused accelerometer to stop detecting steps/sleep/wrist movement | | Sept 9, 2025 | PebbleOS v4.9.9-core45 | - Updated time zone database
• Improved accelerometer overall stability
• Experimental support for magnetometer
• Fixed issues with time sync causing health data loss.
• Multiple minor fixes for reported issues (e.g., calendar reminder issues) - Keep reporting! | | | PebbleOS v4.9.9-core35 | - Some accelerometer improvements/fixes (e.g., spurious shake events)
• Standby mode is now enabled by default.
• Fixed some BLE issues related to GATT notifications. | | | PebbleOS v4.9.9-core33 | - Initial experimental accelerometer support (feedback welcome!) - Thanks Matthew Wardrop for the initial work and testing!
• Enabled the ‘Workout’ app.
• Fixed some crashes when the microphone was being used.
• Decreased logging verbosity as it seems to cause stability issues in some scenarios. | | | PebbleOS v4.9.9-core32 | - Initial microphone support (not yet in mobile app)
• Fixed some mobile app reconnect issues on iOS.
• Potentially fixed some crashes caused by recently increased logging. | | | PebbleOS v4.9.9-core31 | - Fixed issues with ANCS (iOS) being unreliable.
• Adjusted BLE advertising parameters (follows Apple accessory guidelines)
• Adjusted BLE connection parameters. This should potentially fix some connectivity issues observed in the field.
• Watch now detects BLE service changes, so it can rediscover if needed (e.g., if the app crashes or is updated).
• Fixed occasional crashes when toggling airplane mode.
• Removed “airplane toggle” workaround during service discovery as root cause has been fixed.
• Implemented BLE CCCD persistence
• Improved logging in a few areas so we will now catch more details on new/existing issues. | | | PebbleOS v4.9.9-core22 | - Fixed issue where ‘Fully Charged’ popup could appear after partially charging the battery.
• BLE repeat pairing is now supported. | | | PebbleOS v4.9.9-core21 | - Fixes issues with reported/notified values with BLE BAS service
• Other minor charging current tweaks | | | PebbleOS v4.9.9-core19 | - Watch exposes GATT Battery Service; the mobile app will now report the watch battery level.
• Battery model has been adjusted to potentially resolve some issues like the percentage stuck at 100%.
• PMIC will now handle charging fully discharged batteries.
• Added extra logging for battery constants and connectivity actions so we can collect more metrics from devices in the field.
• Notifications now have an alternative design option. | | | PebbleOS v4.9.9-core18 | Bluetooth workaround - auto-cycle airplane mode if service discovery fails | | | PebbleOS v4.9.9-core17 | Battery life improvements - should get ~4 days battery life now! | | | PebbleOS v4.9.9-core14 | Battery % now shows actual %, rather than just 10% chunks. | | | PebbleOS v4.9.9-core13 | Fixes Bluetooth stability issue with core12, but reverts some battery life improvements (back to ~1 day battery life) |