iOS 26, released in September 2025, introduced significant visual redesigns and artificial intelligence features to millions of iPhones around the world. However, the update generated frequent reports of instabilities that affect the daily use of the devices. Usuários point out issues such as accelerated battery consumption, connection difficulties and delays in notifications, problems that arise mainly in the first few days after installation.
These failures arise from internal system processes, such as data reindexing and compatibility adjustments with new features. Apple has already released partial fixes in subsequent releases, but many iPhone owners resolve issues with manual settings. Especialistas recommend checking for available updates before taking more drastic measures.
The transition to the new design, based on the Liquid Glass concept, required adaptations that temporarily overloaded the hardware on different models. Relatos indicate that the discomfort decreases over time, but simple interventions accelerate the stabilization of the device.
Battery Drain and Excessive Overheating
Many iPhone owners notice rapid charge reduction after installing iOS 26. The phenomenon accompanies noticeable device heating, even during light activities.
This behavior is linked to content reindexing, a process that the system performs in the background to organize files and applications. In normal cases, the activity completes within 48 hours, but failures prolong the consumption of resources.
- Perform forced restart by quickly pressing the volume buttons and holding down until the Apple logo appears.
- Go to Ajustes > Bateria to identify high-consumption apps and disable Atualização in Segundo Plano.
- Avoid exposure to high temperatures during the first few days.
- Consider temporarily removing apps that are incompatible with the current version.
Unexpected increase in system storage
The space occupied by Dados from Sistema grows significantly on several iPhones after the update. Usuários record occupation of tens of gigabytes without installing new content.
The expansion results from temporary caches not cleared properly or interrupted photo and file syncs. The system usually resolves the situation automatically after a few days of normal use.
- Update to the latest version available at Ajustes > Geral > Atualização of Software.
- Reinstall streaming or browsing apps that accumulate offline data.
- Only perform a full backup and restore factory settings in extreme situations.
- Monitor storage on Ajustes > Geral > Armazenamento on your iPhone to track variations.
Failed SIM card detection and mobile connections
Messages such as “No SIM card installed” or “SOS only” mode appear on the screen after updating to iOS 26. The error mainly affects 5G connections during exchanges between Wi-Fi and mobile data.
Instability arises from misaligned network configurations or adaptations to the new modem in recent models. Operadoras do not represent the root cause in most cases.
- Toggle Modo Avião on and off for 30 seconds.
- Restart the device and check the physical fit of the chip.
- Reset network settings on Ajustes > Geral > Transferir or Redefinir iPhone > Redefinir.
- Test with another SIM card to rule out hardware damage.
Instabilities in connectivity Bluetooth
Bluetooth connections experience frequent outages in iOS 26, affecting AirPods, headphones, and CarPlay systems. Dispositivos lose automatic pairing or disconnect during continuous use.
The flaw is related to protocol adjustments implemented in the update to improve security and energy efficiency. Modelos older ones suffer greater impact.
- Go to Ajustes > Bluetooth, select the device and choose Esquecer Este Dispositivo.
- Perform a new pairing while keeping the accessories in discovery mode.
- Check activation of Siri for CarPlay integration.
- Update vehicle firmware when available in the infotainment menu.
Delays and absence of notifications in applications
Notifications from apps like WhatsApp and Instagram arrive late or only when unlocking the screen on iOS 26. Usuários miss real-time alerts for important messages.
The Resumo Programado feature, enabled by default, groups notifications to appear at set times. The configuration aims to reduce interruptions, but creates initial confusion.
Many adjust permissions individually to restore previous behavior. The change does not compromise other artificial intelligence features.
- Go to Ajustes > Notificações > Resumos Programados and disable the option.
- Confirm alerts permissions for each application in Ajustes > Notificações.
- Restart iPhone after changes to apply settings.
- Disable Foco or Não Perturbe if activated accidentally.
Preventative measures for future updates
iPhone owners adopt practices that minimize risks in new versions of the operating system. Proper preparation reduces the occurrence of issues similar to those seen in iOS 26.
Perform a full backup via iCloud or computer before any installation. The measure preserves data in case of need for restoration.
- Free up at least 10 GB of free space to accommodate temporary update files.
- Connect the device to stable Wi-Fi network and charger during the process.
- Please wait a few days after official release to install initial fixes.
- Monitor official Apple forums for common reports of the specific version.
These actions contribute to a smoother transition between iOS versions. Usuários Experienced people report a lower incidence of failures when following a preventive routine.
Advanced solutions for persistent cases
Some iPhones remain unstable even after basic correction attempts. Nesses scenarios, deeper options recover normal operation.
Restoring via recovery mode by connecting to the computer resolves serious software conflicts. The process erases content, requiring prior backup.
Apple offers remote technical support or in authorized stores for detailed diagnostics. Técnicos identify whether the problem involves hardware affected by the update.
- Use Finder or iTunes to put your device into DFU mode when necessary.
- Consider temporary downgrade to previous version on supported models.
- Report the error directly through the Feedback app from Apple to help with future corrections.
- Check compatibility of third-party accessories with the new system version.
Impact on older iPhone models
Devices released several generations ago receive iOS 26 with performance limitations. The update maintains support but requires increased processing for advanced visual features.
iPhone XR, XS, and Series 11 owners notice additional slowdowns in everyday tasks. The phenomenon arises from prioritized optimizations for recent hardware.
Apple recommends evaluating usage before updating devices that are more than five years old. Manter previous version preserves fluidity in many cases.
Alternatives include disabling visual effects in Ajustes > Acessibilidade > Movimento. The change reduces graphical load without compromising essential functionality.
Post-update daily maintenance tips
Keeping your iPhone stable after iOS 26 involves simple care routines. Regular Ações prevent recurrence of common problems.
Clear browser cache periodically to control storage. The procedure frees up gigabytes without affecting personal data.
- Disable unnecessary location services in Ajustes > Privacidade and Segurança.
- Manage automatic app downloads in the background.
- Monitor ambient temperature during fast charging.
- Update applications individually via App Store for maximum compatibility.
These practices extend battery life and improve overall system response. Usuários who adopt consistent habits report a more positive experience with the version.
