[AC Question]

How do i text using an Android tablet without a phone?

[anon(632115)]

You can't. You need mobile data for that although you can use apps such as Hangouts but the receiving device will also need Hangouts

[GRIMWALD]

You can use the Email function from a tablet or PC to send someone a text as long as you know what carrier they are on.

U.S. Carrier SMS Gateway MMS Gateway
Altel @sms.alltelwireless.com @mms.alltelwireless.com
AT&T @txt.att.net @mms.att.net
Boost Mobile @sms.myboostmobile.com @myboostmobile.com
Sprint @messaging.sprintpcs.com @pm.sprint.com
T-Mobile @tmomail.net @tmomail.net
U.S. Cellular @email.uscc.net @mms.uscc.net
Verizon @vtext.com @vzwpix.com
Virgin Mobile @vmobl.com @vmpix.com

For instance: (222)-333-4444@txt.att.net

GRIM