1.关于未安装第三方，导致无法登陆被驳回问题：
解决方案：
- 自己判断该设备是否安装第三方app，然后决定是否隐藏第三方登录按钮
- 使用对应的第三方账户验证系统所支持的web view登录
2.We are unable to complete the review of your app because one or more of your in-app purchase products have not been submitted for review.
Next Steps
To resolve this issue, please be sure to take action and submit your in-app purchases and upload a new binary in iTunes Connect. Learn more about how to offer in-app purchases in iTunes Connect Developer Help.
Once you've submitted your in-app purchases and uploaded a new binary, we can proceed with your review.
Guideline 3.1.1 - Business - Payments - In-App Purchase
这个大概意思就是在应用内购没有提交审核 导致被驳回
一般这种情况，都是属于第一次送审时，未勾选内购项
在第二个版本送审的时候 点击选择app内购项目 选择你要添加的购买项 就可以把app和内购项目同时送审 就ok了
3.We noticed that your app uses in-app purchase products to purchase credits or currencies that are not consumed within the app, which is not appropriate for the App Store.
Specifically, your app allows users to first purchase In-App Purchase products, then use the IAP products to enhance the chance of redeeming physical products, such as 話費.
Please see attached screenshot for details.
Next Steps
To resolve this issue, please remove this feature from your app.
这个就是说您的展示的app预览图片和app内部实际显示不符
解决方案：
就是开发者不要隐藏app内部分功能 或者夸大预览效果图 导致和app内部功能不符
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