1、中国联通APP：首页-服务-查询-剩余话费/余量查询；
2、中国联通网上营业厅：首页-查询-话费业务查询-账户余额/余量查询
3、拨打当地联通客服热线10010 IVR查询。
登录手机掌上营业厅可以查看剩余流量。具体操作步骤如下：1、到软件中心下载“掌上营业厅”app，下载完成之后点击打开进入。
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2、进入到“掌上营业厅”首页后，点击最上方“移动用户登录”填写正确的手机号，如果不记得手机号的服务密码，也可以通过短信验证码来登录到“掌上营业厅”首页。
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3、登录到首界面，点击当月消费和账户余额后方的“查账单”。
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5、进入到“查账单”界面后，会出现所有消费记录，流量的使用情况也会展示出来，收费项目也一目了然。
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