If you're reading this you probably tried to search for solutions to get the Sony Imaging Edge app to work with your Sony alpha camera. This is the exact same issue I had and I'm happy to say I found an alternative app that works perfectly with even the currently newest Sony a7R V.
The one I found recommended is Monitor+ and even though I only needed the basic functions included in the free version, I decided to buy the premium version immediately because I also work with video and I have a few projects I already knew I'd be using this for.
I was not paid or encouraged to write this article. This is purely from my own experience which has been extremely positive so far after using Monitor+ for a while now.
Monitor+ is a professional mobile app that can run on your phone to enhance your video production workflow through a series of advanced features that are usually only available on dedicated hardware. As of today, it's clearly made for Sony camera users because there are no other camera brands listed in compatibility.
Monitor+ is available for free from both Google Play and Apple App Store. If for some reason you need to get the APK directly you can download it from the Monitor+ website.
It connects to your camera with a wireless or wired connection, taking advantage of the fast-advancing screen of modern mobile phones to achieve a more accurate and usable monitoring experience, plus giving highly integrated remote control capabilities as well as a bunch of assist functions. Personally, I haven't used the wired connection more than for a quick test.
The Live View function has now become a practically usable stage that provides low latency and reliable communication.
Control the properties of your camera in an intuitive and convenient way.
Record and Playback
Record and playback live view directly on Monitor+ with audio recorded simultaneously from your phone.
Monitor+ can now display and change the AF point directly, or trigger focus tracking, just like operating with the camera screen.
Apple Watch Extension
Provides the possibility to trigger recording and monitoring directly on an Apple Watch. (iOS only)
A series of powerful built-in assist functions are ready for you. False Color, Zebra, Waveform, Histogram, Vectorscope, Guide, Focus Peaking, LUTs…
Real-time Chroma Keying
Previewing the chroma key effect with your camera has never been easier.
Connect to your camera with a USB cable for better stability and low latency.
Here's a full compatibility and capability list