Here's some hints on how to fix Nokia C2-03, Nokia C2-06 or Nokia C2-08 Dual SIM card, slider phone with touch and type features.
1) If memory card is not detected error shows, try to use another working memory card. The memory card might be corrupt or already damaged.
2) Check for possible damaged and or clean the memory card connector pins and its surroundings components on the PCB board.
3) Check the firmware, reflash, restore or update to latest version if necessary.
4) Check, resolder, rework or replace the memory card filter chip (MMC filter IC)
Nokia C2-03, C2-06, C2-08 Memory Not Detected Solution
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