Understanding these specifications is important because a hard reset will permanently wipe the . This process returns the phone to its out-of-the-box state, meaning you'll lose all contacts, messages, photos, and apps stored on the internal memory, but data on an external SD card can often be preserved.
Partially. Photos stored on an external SD card will survive a hard reset (unless you choose "Format SD card" during reset). Photos stored in internal storage will be erased. Always move your media to an SD card or cloud before resetting. How to Hard Reset TECNO Spark Go 2020
Maintain at least 50% battery to prevent the phone from shutting down mid-reset, which can cause software corruption. meaning you'll lose all contacts