
This solution is for Nokia Asha 203 and Nokia Asha 202 Memory Card problem. It applies to both of these phones because they are schematically the same phones.
MMC problem in Nokia Asha 202 and Nokia Asha 203 can occur because of faulty memory card jacket. It can also occur because of moisture or carbon. So first of all clean the memory card base and the general area around it if that does not work I have marked Nokia Asha 202 Memory Card...