Editing Phones that do not allow bootloader unlock

A bootloader is a program that runs when the phone turns on and loads the operating system. <ref>{{Cite web |title=GNU Grub website |url=https://www.gnu.org/software/grub/index.html}}</ref> Most phones lock the bootloader by default, which means that a new bootloader or operating system can't be installed on the phone. <ref>{{Cite web |title=Lock and unlock the bootloader |url=https://source.android.com/docs/core/architecture/bootloader/locking_unlocking |website=Android Open Source project}}</ref>

==How it works==
Some manufacturers do not allow unlocking the bootloader even if the phone is not under a contract. Some manufacturers allow to unlock the bootloader on some regions, or require a payment or an online connection to unlock the phone. Some manufacturers may void the warranty or block certain features permanently if the bootloader is unlocked

==Why it is a problem==
If the bootloader cannot be unlocked the operating system can't be modified in any way which is not allowed by the manufacturer.

==Examples<ref>{{Cite web |last= |first= |title=Bootloader wall of shame |url=https://github.com/melontini/bootloader-unlock-wall-of-shame |website=GitHub}}</ref> ==

* Huawei
* HMD Global/Nokia
* Vivo/IQOO
* ZTE
* Meizu
* Asus
* Alcatel
* Apple
* Energizer
* Cat
* Sharp
* Doogee
* TCL
* Coolpad
* Realme (on some regions)
* OPPO (outside China)
* Xiaomi (China only)
* Samsung (USA only)
* HTC
* Motorola (on some devices)


==References==
{{reflist}}

[[Category:Common terms]]