# 4. Usage and security tips

- [4.1 "Bluetooth cannot be searched" problem solution](/en/keypal-tutorial/hardware-wallet/4.usage-and-security-tips/9.cant-find-bluetooth-solution.md)
- [4.1.1 Solution for Bluetooth connection failure prompt](/en/keypal-tutorial/hardware-wallet/4.usage-and-security-tips/9.cant-find-bluetooth-solution/4.1.1connection-failure-and-solution.md)
- [4.2 Driver installation](/en/keypal-tutorial/hardware-wallet/4.usage-and-security-tips/4.2driver-installation.md)
- [4.3 A note about resetting your device](/en/keypal-tutorial/hardware-wallet/4.usage-and-security-tips/4.3about-device-resetting.md)
- [4.4 About address verification](/en/keypal-tutorial/hardware-wallet/4.usage-and-security-tips/4.4address-verify.md)
- [4.5 Recovery Method for Device Malfunction](/en/keypal-tutorial/hardware-wallet/4.usage-and-security-tips/4.5reboot-device.md)
- [Other Usage Notes](/en/keypal-tutorial/hardware-wallet/4.usage-and-security-tips/usage-notes.md)
