How does apple watch send text messages to Android phones?

Need to create information, the following steps.

Create information on Apple Watch

Open the messages application on Apple Watch.

Scroll to the top of the screen, then tap New Info.

Tap Add Contact, tap a contact that appears in the Recent Conversations list, or choose an option:

Click "New Mail".

If Apple Watch is set to use multiple languages, tap Language, and then choose a language.

Writing text information

You can write information in many ways, most of which are done on the same screen.

After creating a new message, tap the New Message field, and then do one or a set of the following:

Use full keyboard and speed-skating keyboard: (Apple Watch Series 7 only) Tap characters, or use speed-skating keyboard to slide between letters without lifting your finger (not available in all languages). To finish typing, please raise your finger.

If you don't see the keyboard, push it up from the bottom, and then tap the keyboard button.

Use "handwriting": Write information with your fingers. To edit information, rotate the digital watch head, move the cursor to the position to be edited, and then edit.

To use forecast text, tap the completed or unfinished text to highlight it, and then rotate the number table to see the suggested text. Stop turning the digital watch and enter the highlighted suggestion.

Handwriting is only suitable for some languages.

To reuse the sketch, please rotate the digital crown or click the sketch button.

Enter text with iPhone: When you start writing an email and the paired iPhone is nearby, a notice will appear on the iPhone to guide you to enter text with the iOS keyboard. Tap the notification, and then type the text with the iPhone keyboard.

Send it as soon as you finish it.