In order to check the highest resolution and the number of layers your device is capable of supporting, please follow the steps below:

1- Tap Create >> tap Settings (the gear icon on the upper right)
2- Tap Device Performance Information >> tap Analyze Device Performance (the analysis can take up to few minutes, please do not turn off KineMaster or switch to another app as it will interrupt the progress)

Once the analysis is done, it will show the highest resolution your device can support, as well as the number of layers supported.

Note: If your device supports higher resolution recording (e.g 4K), it doesn't mean it will support 4K editing in KineMaster, these limitations are to ensure the stabitility of KineMaster running in your device.