Spreadtrum SC9863A

Bootloader unlock

 * Download required files
 * Open Developer options and toggle Bootloader unlock option on
 * Move to fastboot mode
 * Get identifier token with fastboot oem get_identifier_token
 * Run
 * Run

Devices those can be unlocked

 * Alcatel 1S (2019) 5024D
 * DEXP Ursus H110
 * Doogee Y7/N10
 * Philips S561
 * Xiaomi Qin 2 Pro
 * Other