The CIMB Bank PH mobile App is compatible on iPhone running at least iOS 10 and Android smartphones running at least Android 5.0. Also, your mobile device screen size has to be at least 4 inches for the app to be supported.
If you're using Huawei smartphone without Google Play Store, you can also download the app from AppGallery.
If your device is rooted or jailbroken, you will not be able to download/use the app due to security reasons.