Activating Call Forwarding With Straight Talk Have more questions? Submit a request Comments Peter Coopersmith BERKSHIRE HATHAWAY HomeServices California Properties January 22, 2015 22:57 I have a Nexus 5 using the Straight Talk sim card which is on the AT&T network. Used the forwarding numbers that YouMail provided and everything is working great. I've heard that sometimes the forwarding numbers might be reset by AT&T but I have not experienced it yet. To soon to tell right now but I'm not sure much can be done about that. Jacky Atienza January 23, 2015 18:58 @peter Unfortunately we do not know when your carrier makes any changes or resets your conditional call forwarding but if you notice a period of time with out receiving a message or callers are greeted with your carrier's voicemail you would need to re-activate the call forwarding on your phone. Thankfully this does not happen often. Barry Keim March 25, 2015 22:34 I was a Verizon wireless user that is now a straight talk user with a Samsung galaxy 3 and Verizon keeps popping up. Carissa March 26, 2015 17:20 @BarryKeim Your account shows that your carrier has been updated to Straight Talk. I will be sending you an email so we can get you connected back.