I have a verizon droid maxx my brother has a at&t iPhone we cannot text each other? When I text him it shows its sent but he does not receive anything? I do not have his number blocked. He has his imessager shut off and I do not receive his texts either? We can call each other? I got a new phone in May but it the same as my old one. This problem did not stat till about mid July. We each tried resisting our phones. We each deleted each other out of our contacts and tried that way did not help? His wife also has an iPhone on the same plan and carrier as him and i can text and receive texts from her? I need some help please. Thank you