The answer
Will a Modolix APK install on its own?
Often it will not. A Modolix listing gives you a file to download and nothing to install it with. HappyMod is the missing piece: an app database and installer that asks for your platform, then fetches and installs the newest build made for it.
Questions
The longer version
Is Modolix legit?
We cannot guarantee the files Modolix hosts, and its pages do not name an installer. GetModolix sends you to HappyMod instead, which installs builds from its own database.
What is the latest Modolix version?
The number changes from one source to the next, so chasing it rarely helps. HappyMod looks up the newest build of each game or app when you install it.
Why does my phone say "App not installed"?
That message usually means the file isn't compatible with your phone. HappyMod asks for your platform first, then fetches the build made for it, so pick Android or iOS before you install.
Can I find modded eFootball or FC Mobile this way?
Search the game inside HappyMod once it is on your phone. What the database holds is listed there with its build, so you see it before you install anything.
Does it work on iPhone?
Yes. You choose iOS or Android on the next screen and get the version for that platform.
Do I have to pay for anything?
No. HappyMod costs nothing to download or to use.