[EVO 4G General] simon1100f:
First and foremost BE CAREFUL WHEN TWEAKING THESE SETTINGS! I am learning as I go here. I have been in contact with a specific Tier 3 CLEARWIRE tech throughout this. He has been instrumental in troubleshooting my WIMAX issues. Its actually kinda interesting how I originally discoverd this. I bought an evo on the release day. That phone turned out to be defective, so I exchangedit for a new phone. Once I activated the replacement phone I realized I could not connect to WIMAX. I called sprint and of course was told thier default answer to anything that they can't fix which was, oh its a signal issue! I could not convince them otherwise. I was at a Sprint retail store holding 2 demo Evo's that had a great signal and they still insisted it was a signal issue. Finally they replaced my phone. I activated that phone and had the same problem, at this point I suspected the WIMAX radio in the phone was probably ok. What are the odds of having 2 consecutive broken radios. So I started to do a little research and discovered the hash codes to get into the WIMAX settings. I could then see that the phone was actually able to connect but during the connection prosess it would stop and time out right at the point of obtaining an ip address. I called Sprint back and soon realized first that this was more on the engineering side of things. Unfortunately according to Sprint there is no way to contact an actual engineer. I spent hours upon hours working with some really knowledgable Sprint reps. The problem was everytime I called Sprint I would have to start from square one because a company as advanced as Sprint doesn't have the capability to allow a customer to contact a specific rep. Countless wasted hours trying to get hold of one of the few true techs. Anyway I soon discovered that Sprint reps didn't have the proper tools at their disposal to help diagnose the issue. I knew the radio was ok on the phone because it would start to connect but then stop. I was convinced it was some sort of authentication issue. Sprint reps could watch my phone authenticate with the network on 3g but not 4g so I went straight to the source which of course was Clearwire. Again I can't say enough about Clearwire techs. First off right away I got in touch with a tier 3 rep who was intrigued with the problem and if that wasn't cool enough he gave me his full name and extension number to personally contact him. He also was friends with a engineer involved with the Sprint merging process. At one point throughout the troubleshooting process we tried several conference calls with Sprint we actually had to just hang up on them more than once because one trier 3 tech was still convinced it was a signal issue even though I was making the call from a store surrounded by working demos. We called back hoping to contact a rep with at least some basic understanding but the next rep contacted didn't know what a relm was let alone what a freaken PRL was! Needless to say we gave up on any hope of help from sprint. We finally discovered that the MAC address of my phone was to blame. Turned out that every Evo phone that had a MAC address that did not begin with 00 where not programmed in the back end server. I will post details on the settings and process in order when I get home. I am tired of typing on my phone!