To be clear: The device is a low-cost, Chinese "smartphone" (often sold as a mini phone or a kids' phone) with a MediaTek MTK6737 or similar chipset. Because of its niche nature and lack of open-source kernel support, development is almost nonexistent.
ro.config.nocheckin=1 profiler.force_disable_err_rpt=1 profiler.force_disable_ulog=1 soyes xs11 custom rom
