I have a 32 GB Apple iPhone 4 MC605B Factory Unlocked (not jailbroken) iPhone 4 running IOS Version 4.3.3 (8J2) running on T-Mobile Carrier 10.0 Modem Firmware 04.10.01. This iPhone was purchased directly from Apple in the UK while I was working in London. My iPhone 4 was previously registered/activated in the US via iTunes with the T-Mobile USA Micro SIM and FaceTime was previously successfully activated via T-Mobile SMS while running IOS 4.1. I previously made several test FaceTime calls to/from other iPhone 4 devices as well as my Mac Mini, Mac Pro and MacBook Pro over WiFi. Now with the recent update to IOS 4.3.3 my FaceTime is disabled and I have the dreaded "Waiting for activation..." message which after a period of time fails and retry is of no help. I also noted that no outbound SMS silent text messages to +44 7786 205094 appear in my T-Mobile recent activity. I can send myself both SMS text and MMS image messages via the iPhone Messages app. If I attempt to send a simple "test" text message directly to +44 7786 205094 which the numner for the Apple UK FaceTime SMS gateway, I do not receive an error although there is no record in my T-Mobile Recent Message Activity. All other manually sent SMS or MMS messages in or outbound show in the recent activity. T-Mobile tech support says international SMS is not being blocked. Help would be greatly appreciated by T-Mobile, Apple or others. No I do not wish to jailbreak my iPhone 4. Thanks in advance!