OnePlus 3 User's Manual
![OnePlus 3 manual cover](/images/bf958d240690db6350880b69/thumbs/thumb175x175.webp)
To extend the battery life, reduce screen brightness, turn off background apps, use Battery Saver mode, and disable unnecessary notifications. Regularly updating the device software can also help in improving battery efficiency.
To clear the cache partition, power off the device, then press and hold the Power and Volume Down buttons simultaneously until the OnePlus logo appears. Use Volume buttons to navigate to "Wipe Cache Partition" and confirm with the Power button.
Overheating can be caused by extensive background apps or exposure to a hot environment. Ensure apps are updated, avoid using the phone while charging, and reduce heavy usage during high temperatures.
To perform a factory reset, go to Settings > Backup & Reset > Factory data reset. Confirm the action, and the device will reset to its original settings. Ensure to backup important data before proceeding.
Check the charging cable and adapter for damage, try a different power source, and clean the charging port for debris. If the issue persists, consider a battery replacement or professional repair service.
To enable developer options, go to Settings > About Phone, then tap "Build Number" seven times until you see a message that you are a developer. Developer options will appear in the main settings menu.
Ensure the camera app is updated, clean the lens regularly, and use manual mode for better control over settings. Consider third-party camera apps for additional features and improvements.
Random restarts can be due to software glitches or hardware issues. Update all apps and the OS, clear cache data, and uninstall recently added apps. If unresolved, a factory reset or professional diagnosis may be needed.
To update the software, go to Settings > System Updates, and check for updates. If available, download and install the update over a stable Wi-Fi connection, ensuring the battery is sufficiently charged.
Yes, the OnePlus 3 supports dual SIM functionality. Insert both SIM cards into the SIM tray, go to Settings > SIM & Network, and configure the preferred SIM for data, calls, and messages.