Shadowrocket 4+

I also noticed the problem. After the upgrade to iOS 11, it automatically disconnects the phone from WiFi and uses 4g instead. The problem seems to be solved by previous updates but is back again, and the problem doesn’t seem to be present on every WiFi router, I think the app works with certain protocol or hardware somehow

软件没有完美的，
所以需要不断地更新改进，
看了下版本更新纪录，
每次改进详情也写得很详细，
不像很多糊弄人的软件，
只写一句改进了修复了一些不让你知道的问题，
也没买那些比较懒两三个月才更新一次的，
协议支持最全同时该有的功能都有而且价格良心，
同时信任用户不设置什么远程设备绑定验证功能来限制用户使用，
据说有些通过远程绑定限制设备数量的软件，
甚至能远程在用户手机执行一些命令，
万一作者人品差或者想用用户信息来获利那就危险了，
所以也没选那种类型的软件。

The software is not perfect.
So it needs to be constantly updated and improved.
I've looked at the version update log.
The details of each improvement are written in great detail.
Unlike a lot of software that fools people.
Not like a lot of confusing software, just write a sentence to improve the fix some problems that do not let you know.
I did not buy those lazy two or three months to update once.
The protocol support is the most complete while the features are there and the price is conscientious.
At the same time, trust users do not set up any remote device binding verification function to limit the use of users.
It is said that some software that limits the number of devices by remote binding
The software can even remotely execute some commands on the user's phone.
In case the author is of poor character or wants to use the user's information to profit from it, it is dangerous.
So I didn't choose that type of software.

I’m primarily using Shadowrocket app to connect to my personal Shadowsocks VPS. I find the app excellent in performance, it has very comprehensive features satisfying most users and very good UI/UX. But what really impresses me most is the outstanding support from the developer. I had initially problems configuring the app to connect to my Shadowsocks server. I believe most of the issues are due to my lack of familiarity with the Shadowsocks + v2ray plugin protocol. But the developer has shown great patience in walking me through the settings in the app to finally establish connection. The performant app and wonderful developer support earned my solid recommendation.