How to Fix Grammar Mistakes While Typing on Android

Stop sending messages with typos. Here is how to fix grammar and spelling in real time, in any Android app, straight from your keyboard.

Typing quickly on a phone means typos, missed punctuation, and awkward grammar slip through — especially in a second language. The good news: you no longer need to copy your text into a separate grammar app. With an AI keyboard, you can fix mistakes in place, in whatever app you are already typing in.

Why on-device autocorrect is not enough

Standard Android autocorrect fixes single misspelled words, but it does not understand sentences. It will not catch a wrong verb tense, a missing article, a run-on sentence, or a word that is spelled correctly but used incorrectly (their vs there). For clear, professional messages you need grammar correction that reads the whole sentence.

Fix grammar as you type: step by step

• ›Install SmartType Keyboard from the Google Play Store.
• ›Open Settings and enable SmartType, then set it as your default keyboard.
• ›Open any app — WhatsApp, Gmail, Instagram, or a browser — and start typing.
• ›Tap the AI grammar action in the suggestion bar to instantly correct spelling, grammar, and punctuation.
• ›Review the corrected text and send. Nothing leaves the app you are in.

Beyond grammar: tone, translation, and replies

Once grammar is handled, the same keyboard can do more with a single tap: rewrite a sentence to sound more professional or friendly (tone transformation), translate your message into 369 languages before you send it, or generate a smart reply to a message you received. Because it is a system keyboard, all of this works everywhere you type.

Does it work offline?

Standard typing, autocorrect, and next-word predictions run on-device and work offline. AI features such as grammar correction, translation, and smart replies send your text to be processed and therefore need an internet connection.

The bottom line

Fixing grammar on Android used to mean bouncing between apps. An AI keyboard collapses that into one tap, right where you type. If you write a lot on your phone — in one language or several — it is the fastest way to send clean, confident messages.