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Tap the Google Voice app icon, which resembles a blue speech bubble on a white background. The app will open to your Google Voice page if you're signed into your Google account.  If you aren't signed in, tap SIGN IN, then enter your email address and password. You may also be able to select an existing account if you use other Google products on your phone. If you don't have a Google Voice account, you'll need to tap Add account and follow the on-screen setup instructions, including choosing a Google Voice number. It's a grey speech bubble in the bottom-left corner of the screen. On Android, the "Chat" icon is in the upper-left side of the screen. This icon is in the middle of a blue circle in the bottom-right corner of the screen. A pop-out menu will appear. It's in the pop-out menu. Type in the phone number to which you want to send your text, then tap the number below the search bar.  The number below the search bar may also appear as a name if the person to whom the number belongs is in your contacts. If you have contacts enabled for Google Voice, you can also tap a contact's name below the search bar, or you can enter a contact's name. It's above the keyboard. Type in the message that you want to send to the contact. You can add a photo or video to your message by tapping the mountain-shaped photo icon to the left of the text field and then selecting a photo or video from your phone's camera roll. It's a grey, paper plane-shaped icon to the right of your typed message. Doing so will send your message like a regular text. You can also receive texts in Google Voice; if your contact replies to you, you'll be able to see the reply here.
Open Google Voice. Tap the "Chat" icon. Tap ＋. Tap Send a message. Enter a contact's number. Tap the "Type a message" text field. Enter a message. Tap "Send" .