Samsung A12 Summary

Rooting and Flashing

OEM Unlock is essential for rooting, but if it is greyed out, it could be fine.
For Samsung devices, flashing TWRP requires flashing the DM-Verity file simultaneously.
It's important to patch boot.img and vbmeta.img and flash them in a tar archive.
US Snapdragon Samsung phones have locked bootloaders, making custom ROMs difficult to install.
Odin is required to flash Samsung phones; Heimdall is an alternative, but newer phones may not be compatible.
A series Samsung devices without Snapdragon processors can use the same method for rooting.

Some users reported slight lag issues and touch response problems on the A12, but overall found it to be a good phone.
Issues include blue lines on the screen, sensitive touchscreen edges, and slow response times.
Users experienced slow performance and inconsistent background app behavior, especially with Google Messages.
Despite slowdowns, some users found the A12 to be worth the price, with good battery life for light usage.

Users reported issues like unexpected shutdowns and screen alignment problems after screen replacement.
Updates and security patches may cause issues like charging problems or overheating.
Some users experienced WiFi disconnection and incorrect password prompts, requiring frequent reconnects.

Discussions included running 3DS games, visual novels, and various emulators on low-end Android devices.
Recommendations for specific emulators, settings, and alternatives were provided for optimal emulation experiences.
Some comments focused on device compatibility, graphical improvements, and game performance on various platforms.

Concerns were raised about account security, phishing, and data breaches in games like Genshin Impact and Clash of Clans.
Users shared experiences with tech support, repair processes, and device performance, including comparisons with other brands.
Discussions on device repair methods, replacement parts, and software tools to enhance device functionality were also included.

For more detailed information on each point, refer to the individual Reddit comments provided.