You can insert it with reader bought from mobile maintenance to your Pc and format it. If your Smartphone is Huawei you click Storages Management ➡️ Sd➡️ options will come press Format. If its Samsung Head into your Settings > Device Care ➡️Select Storage ➡️ Tap on Advanced ➡️Under Portable storage select SD Card ➡️Tap on Format ➡️ Read through the pop up message then select Format SD Card. Hope it helps 😄👍.