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Runs specific diagnostic tests for GPS location tracking.

Some network providers (like Verizon or AT&T) disable certain USSD codes to prevent users from altering network settings. how+to+use+secret+codes+on+samsung+galaxy+a7+2+work

Maya knew there were boundaries: some codes could factory reset the device or perform low-level changes. She avoided any codes that included words like “erase,” “wipe,” or “factory” unless she had a full backup. Before trying anything unfamiliar, she bookmarked a reputable support page and backed up photos, contacts, and app data to a secure cloud. Runs specific diagnostic tests for GPS location tracking