Recently moved from iphone 4 to iphone 6 and changed the carrier from Tmobile to Verizon, post this change I am not able to send text message to one specific mobile number. The other person can send text to my number. The message sent to this specific phone number from iphone 6 appears green as sent but is not received by the other specific number. I can send messages to all the other friends but not to this specific number. The other person reached to his carrier (Tmobile) and they confirmed that it is not coming in their network after doing the testing from my end. This problem started when moved from Tmobile to verizon.