This is all I can see. I'm running Android 4.2.1. Is something I'm missing?
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试):
问题:
回答1:
Is something I'm missing?
Yes. You are missing a lot of developer options. :-)
You would have to take this up with the device manufacturer. There is no general reason why you would have access to only a subset of developer options.