Finding a (also known as a 12-key or T9 layout) for modern Android devices is possible through built-in settings on some brands or by downloading third-party apps from the Google Play Store. This layout is often preferred by users who find standard QWERTY keys too small or who are nostalgic for the classic mobile phone typing experience. Built-in 3x4 Keyboard (Samsung Devices)
You can also set the Numbers and symbols layout to 3x4 specifically for a calculator-like grid. 3X4 Keyboard For Android Download
If you own a Samsung Galaxy device, you likely already have a 3x4 layout option built into your pre-installed Samsung Keyboard. Open Settings and go to General Management . Tap on Samsung Keyboard settings . Select Languages and types . Tap on your primary language (e.g., English). A pop-up will appear; select 3x4 keyboard . Finding a (also known as a 12-key or