The most annoying thing about them is that you *can* unlock your bootloader, but only if you can get into fastboot. And guess what? They locked fastboot with an RSA key!
As per Realme, they decided that segregating people by ~~race~~ their phone's region is cool. If you didn't buy your phone in China or India, chances are you won't be unlocking anything anytime soon.
In April-May 2023 you could unlock any Realme phone using this script [rmx3474-rooting], but on May 26th Realme posted this joke of an announcement on their forum [c.realme.com][announcement]. (They've deleted the original announcement)
In theory, if available, you could use full-OTA packages to change your phone's firmware region and use the deep testing app directly, but I can't verify that this works (please, correct me if I'm wrong). Guide: [xdaforums.com][Full-OTA region switch]
As for China and India... Seeing how easily Realme dropped the ball on their global users, I personally would be worried about their future plans. For now, you'll have to find and follow device-specific instructions at [c.realme.com](https://c.realme.com/in/). The process is pretty much the same for most phones, but newer models may require a HeyTap account.
Deep Testing is the application used to request the bootloader key. Internally, it writes the key to the (oplus/oppo)reserve1 partition, which is later read by fastboot. Realme and Oppo have different versions of Deep Testing, but the apps are almost identical in function.
### Realme
While Realme's posts make it seem like you need a specific version of DT for each device, this is not true. All devices with RUI 2 and below need to use v1.0.0, all devices with RUI 3 and above need to use v1.0.1 or v1.1.0.
**v1.0.1:**
- Changes the signing key.
**v1.1.0:**
- Introduces HeyTap accounts.
#### Debugging
> 🧹 There should be a guide to running code with this exploit.
A debuggable version of Deep Testing 1.1.0 has been accidentally released. Equipped with Android Studio, you can execute code with full system privileges (UID 1000, not root).
Brought up by [gargargar666 on XDA][deep-testing-thread]. Download [GT5-DeepTesting.apk][debuggable-deep-testing]
### Oppo
Oppo Deep Testing uses a different API endpoint to request the unlock code. Only 2 versions of Oppo Deep Testing exist: v1.0.1 and v1.1.0.