Predictive text while typing on the keyboard is a common feature of smartphones today that helps users see suggestions for entering text more quickly. However, for some users who are not familiar with this usage, it can be annoying. To disable this feature, follow these steps:
Disable predictive text on the LG G3 keyboard:
Step 1 : Go to Settings > Language & input.
Step 2 : Select the LG keyboard or the third-party keyboard you have downloaded and are using.