There's always been an app size limit for cellular downloads. It's 150 MB as of writing.

For those who are along the borderline, here's a great way to check how big your app is:

1. Go to iTunes Connect
2. My Apps
3. Click the app
4. Click Activity
5. Under All Builds
6. Click the version number to expand
7. Click on the build
8. Click App Store File Sizes

This reveals a list of device types and their corresponding download sizes.

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