Salaam wakuu, I bought a memory card (8gb) which was working perfectly until a couple of days go when I rebooted my phone and it gave me this error 'the media card inserted contains errors' then inanipa option yakurepair but then inasema repair failed. The only option which works ni kuformat. Now imekua kero sababu each time I restart my phone or simu ikizima charj kabisa simu ikija kuwaka lazima niformat upya. Nimejaribu ku run chkdsk na pia kucheck errors kwa kutumia windows tools but still the problem persists. Naomba ushauri wakuu, what might be the problem?