Unlocking bootloader on Xiaomi smartphones crucial step for custom development enthusiasts. Xiaomi complicated process, especially with HyperOS introduction. Frustrating issues users encounter “This device is not activated, please activate and attempt unlock again” error during Mi Unlock Tool process. This guide detailed solutions resolving issue effectively.

Advantages and Disadvantages of Bootloader Unlocking

Benefits of Unlocking Bootloader

• Administrative Rights: Unlocking bootloader administrative control through rooting with tools like Magisk, KernelSU, or APatch.
• Custom Modifications: Flashing various custom ROMs, kernels, and other modifications enhancing device performance and capabilities.
• Overclocking: Custom kernel overclocking CPU or switching Governor Profile optimizing device performance.

Drawbacks of Unlocking Bootloader

• Warranty Void: Unlocking bootloader warranty void.
• Factory Reset: Factory reset requirement data loss.
• Security Risks: Failing SafetyNet and Play Integrity Tests banking and payment apps usage issues.

Fixing “This Device is Not Active” Error

Enable SIM and Activate Xiaomi Account

Resolving error, Xiaomi account activation with SIM card necessary. Steps:

1. Turn Off WiFi: Carrier Data and Location (GPS) enabling.
2. Activate SIM: Phone’s Xiaomi account > Devices > Current Device > Locate Device.
3. Verify SIM Activation: SIM activation confirmation through SMS sent to Xiaomi. Call and SMS sync enabling in Xiaomi Cloud settings.

Relogin to Xiaomi Account

If previous steps ineffective, logging out from Xiaomi account on phone, then logging back in. Device registration for unlocking through Developer Options, issue resolution checking.

Apply Before Schedule

If “Application quota limit reached” error, applying minutes before scheduled start time. For instance, suggested time 00:00 GMT+8, applying at 23:55 GMT+8.

Verify Device Authenticity

Ensuring genuine device through Xiaomi product authentication website. Device’s IMEI or serial number entering, authenticity verification. Crucial step, counterfeit devices error cause.

Use Different SIM Card

As last resort, different SIM card:

1. Create New Xiaomi Account: New SIM card’s phone number for new Xiaomi account creation.
2. Sign In: Device login with new account, unlocking procedure retry.

Conclusion

Following steps, “This device not active, please activate and attempt unlock again” error resolution while unlocking Xiaomi smartphone’s bootloader. Any issues or further questions, comment below. Assistance provision ensuring smooth unlocking process.