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|-
| [[Samsung Galaxy|Samsung]]|| Easy (global)<br>Unavailable (US, Canada and Japan)<br>Unknown (South Korea)
| Enable option that allows OEM unlock (if it existexists) in Development settings, then unlock bootloader in Download mode.
[[Samsung Knox]] (on supported<ref>{{Cite web |url=https://www.samsungknox.com/en/knox-platform/supported-devices |title=Device Compatibility Knox Solutions | Samsung Knox |access-date=2024-12-05 |archive-date=2024-12-07 |archive-url=https://web.archive.org/web/20241207152737/https://www.samsungknox.com/en/knox-platform/supported-devices |url-status=live }}</ref> devices) will be permanently tripped if modified or custom firmware is flashed, so [[Samsung Wallet]], Secure Folder and applications made use of the Knox framework will be permanently unusable even if the bootloader is re-locked.
|-
|-
| [[Xiaomi]]|| Hard (MIUI powered devices)<br>Very Hard (non-Chinese HyperOS powered devices)<br>Unavailable (China Mainland)
| AddRequires Mia account, request code via Windows3-only7 software,day waitold forMi 3 days on HyperOS or 1 week for MIUIaccount (limited to one device per month and three devices per year).
On devices with [[Xiaomi HyperOS]] outside mainland China, you need to request for bootloader unlock permission for your Xiaomi accountpermissions in the Xiaomi Community app before you can proceedproceeding with bootloader unlocking. YourRequires Xiaomi account needs to be at leasta 1 -month -old toXiaomi be eligibleaccount.
For Mainland China devices with HyperOS, bootloader unlock ishas not been available since February 2025.
|-
| [[Asus]]|| Unavailable || Unavailable since August 2023, when first-party appapps were removed and servers were shut down.
|-
| [[Sony Mobile|Sony]]|| Medium || Command-line, request code at Sony website
Unavailable (others)
| Select Huawei phones using the Kirin SoC can have their bootloader unlocked via potatonv: https://www.xda-developers.com/huawei-honor-bootloader-unlock-potatonv/
For other devices, bootloader unlock ishas not been available since July 2018.
|-
| [[Oppo|OPPO]]|| Easy ([[MediaTek]]) or phones that bought in mainland China<ref>{{cite web | url=https://www.oppo.cn/thread-397164526-1 | title=帖子详情 - Oppo社区 }}</ref><br>Medium (Snapdragon).
| [[Oppo|OPPO]]|| Easy ([[MediaTek]]) or phones that bought in mainland China<ref>{{cite web | url=https://www.oppo.cn/thread-397164526-1 | title=帖子详情 - Oppo社区 }}</ref><br>Medium (Snapdragon). Only any phones in support list are possible to unlock Snapdragon-powered OPPO phone.<ref>{{cite web | url=https://drive.proton.me/urls/33N5W4XGHW#tdsu-ADk9YyA | title=Proton Drive }}</ref> Any phones that's not in support lists is still possible if using paid tool also known as UnlockTool. Without paid tool, It would be impossible to unlock. Unlocking is possible on some mediatek SoCs via MTKClient. Note that about fastboot binaries were removed, or locked by RSA key|| Snapdragon: https://us.docs.wps.com/l/sIIS95rToAcW2x7AG?v=v2<ref>{{cite web | url=https://www.reddit.com/r/Oppo/comments/1bx3kbt/comment/l3qzue1/?utm_source=share&utm_medium=web3x&utm_name=web3xcss&utm_term=1&utm_content=share_button | title=Tutorial can be foun… | date=12 May 2024 | access-date=9 July 2024 | archive-date=9 July 2024 | archive-url=https://web.archive.org/web/20240709115137/https://www.reddit.com/r/Oppo/comments/1bx3kbt/comment/l3qzue1/?utm_source=share&utm_medium=web3x&utm_name=web3xcss&utm_term=1&utm_content=share_button | url-status=live }}</ref>
Only certain Snapdragon-powered OPPO phones can be unlocked<ref>{{cite web | url=https://drive.proton.me/urls/33N5W4XGHW#tdsu-ADk9YyA | title=Proton Drive}}</ref>{{Better source needed}} without a third-party paid tool such as UnlockTool.{{citation needed}} Unlocking is possible on some MediaTek SoCs via MTKClient. Note that certain fastboot binaries have been removed, or locked by RSA key. || MediaTek: MTKClient, which sometimes requires using MTK bypass utility beforehand.
MediaTek: MTKClient, sometimes MTK bypass utility are required beforehand
Any phones that's bought from mainland China and in depth-test's device support lists of depth-test: Unlock by depthDepth test regardless of SoC, (the depth test app can be downloaded from https://wwwOppo's website).oppo.cn/thread-397164526-1 thenCommand unlockline viausing adb with simple command line while inand fastboot state.
If you are getting "Handshake failed" on MTKCilent, then it is necessary to [[test point]] to force boot into [[boot ROM]]
|-
| [[HMD Global|HMD]]-[[Nokia]]|| Unavailable || N/A
|-
|[[Vivo (technology company)|vivo]]
|Unavailable as of May 2022.<ref>{{Cite web |title=vivo Smartphone FAQs {{!}} vivo India |url=https://www.vivo.com/in/support/questionList?categoryId=10047&FAQId=10204 |access-date=2022-11-29 |website=www.vivo.com |archive-date=2022-11-29 |archive-url=https://web.archive.org/web/20221129234638/https://www.vivo.com/in/support/questionList?categoryId=10047&FAQId=10204 |url-status=live }}</ref>
|N/A
Unless there are XDA forums that have methods to unlock, but some method cannot be used after updated phone patched exploit. The user can access fastboot, but the manufacturer has modified the bootloader so that it does not respond to any commands to unlock bootloader.
|Vivo X70 Pro+ https://xdaforums.com/t/vivo-x70-pro-bootloader-unlock-how-to-guide.4444989/ Vivo Y31 2021 https://xdaforums.com/t/unlocking-bootloader-rebooting-in-edl-without-testpoint-vivo-y31-2021.4440801/
|-
| [[LG]]|| Hard || [Possible<ref>{{cite web |title=V60 Bootloader Unlock and Magisk Root |url=https://xdaforums.com/t/v60-bootloader-unlock-and-magisk-root.4358785/ Possible],|website=XDA withForums the|access-date=24 helpJuly of2025}}</ref>{{Better leakedsource engineeringneeded}} bootloadersby availableflashing tobootloaders be flashed viawith QFIL utility.
|-
| [[Tecno Mobile|Tecno]]|| Medium || Command-line,. (requiresRequires Tecno ID account onat the phone, registered inleast two weeks orold. more, to activate OEM unlocking.)
|-
| [[Infinix]]|| Medium || Command-line,. (requiresRequires InfinixInifinix ID account onat the phone, registered inleast two weeks orold. more, to activate OEM unlocking.)
|-
| [[Itel Mobile|Itel]]|| Medium || Command-line,. (requiresRequires Itel ID account onat the phone, registered inleast two weeks orold. more, to activate OEM unlocking.)
|-
| [[TCL Technology|TCL]]|| Medium (Ion V only)
Unknown (others)
| For the Ion V mobile phone, you can use a Python tool to reboot to a normally hidden fastboot,. then use the fastboot command 'fastboot flashing unlock' to unlock it.
|-
|[[Amazon (company)|Amazon]]
|Medium
|Command-line, requiresand unofficial. Requires using Linux to [[Brick (electronics)|brick]] the device temporarily.<ref>{{Cite web |date=2019-03-21 |title=[UNLOCK][ROOT][TWRP][UNBRICK] Fire HD 10 2017 (suez) |url=https://xdaforums.com/t/unlock-root-twrp-unbrick-fire-hd-10-2017-suez.3913639/ |access-date=2025-04-19 |website=XDA Forums |language=en-US |archive-date=2025-04-09 |archive-url=https://web.archive.org/web/20250409172641/https://xdaforums.com/t/unlock-root-twrp-unbrick-fire-hd-10-2017-suez.3913639/ |url-status=live }}</ref>{{Better source needed}}
|}
==== History ====
The bootloaders of [[Google Nexus|Nexus]] and [[Google Pixel|Pixel]] devices can be unlocked by using thewith [[fastboot]] command <code>fastboot oem unlock</code> or if it doesn't recognize the command <code>fastboot flashing unlock</code>.<ref>{{Cite web |title=Factory Images for Nexus and Pixel Devices {{!}} Google Play services |url=https://developers.google.com/android/images |access-date=2022-11-07 |website=Google Developers |language=en |archive-date=2017-04-04 |archive-url=https://web.archive.org/web/20170404151606/https://developers.google.com/android/images |url-status=live }}</ref>
When [[Motorola]] released a bootloader unlocking tool for the Droid Razr, [[Verizon]] removed the tool from their models.<ref>{{Cite web |last=Ingraham |first=Nathan |date=2011-10-24 |title=GSM Motorola RAZR hits the FCC; Verizon model has locked bootloader |url=https://www.theverge.com/android/2011/10/24/2511339/droid-razr-att-verizon-fcc |access-date=2022-06-14 |website=[[The Verge]] |language=en |archive-date=2022-10-01 |archive-url=https://web.archive.org/web/20221001041223/https://www.theverge.com/android/2011/10/24/2511339/droid-razr-att-verizon-fcc |url-status=live }}</ref>
| 