沒有sim卡上微信的具體操作步驟如下：
1、在手機桌面上點擊打開“微信”app。
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2、接著在“微信”app的登陸頁面點擊下方的“用微信號/QQ號/郵箱登陸”。
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3、然後在新的頁面中的賬號和密碼欄中輸入相關信息，然後點擊下方的“登錄”。
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4、然後此時就可以成功登陸“微信”頁面了。
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