Wanted to try and help out in figuring out what the deal is with this phone, has so much potential but needs some Software tweaking on HTC's Part. I have two. This was also posted on the HTC Support Community and I received no helpful responses from the company.
1.) Wifi still seems to have issues with speed and freezing across both devices, maxes out at ~26 Mbps once in a while averages ~10 Mbps. (Note: Using Best Wi-Fi Performance & 60 Mbps Wifi Connection)
2.) Phone has to be restarted twice to get the phone to catch a Cell Signal when phone is off after battery dies. This happens both on charger or battery even when powering off the device with battery left. This is consistent on both Amazes. Airplane mode cycles don't fix the problem anymore.
3.) Amaze Shows connected to Wifi Calling and Shows Ready, but when you make a call it immediately disconnects, Can't send SMS, or MMS too when this happens. Impossible to know when it is working or not. Have to usually restart the phone twice as noted above. Also, get REG99 Error when trying to send a MMS with picture and have to restart it twice to get it to work.
4.) Very poor Wi-Fi signal reception even without a cover on the phone. When Connected to the 5ghz N band complete loss of signal occurs when I am approx 10 ft away from the router through a non-insulated 2x4 sheetrock wall.
5.) Phone Automatically uses 4g Data even when mobile networks check box is unchecked. Noticed twice when using Wi-Fi and phone reported a low signal over Wi-Fi.
6.) Wireless device control has a major problem with WiFi, 4g, Cell, and Bluetooth. They do not respond properly through the settings menu. For Instance when in airplane mode, Cell Signal activates after a half hour, and 4g randomly turns on and off, will have to check bill to see if anything was used.
***UPDATE (2/29/12): The Amaze DOES use Packet data when it is turned off via Wireless & Networks > Mobile Networks Check Box, and you can't seem to turn it off used 2-3 MB of data when OFF. Does not correct even when restarting or resetting and has been doing this out of the box.***
7.) Bluetooth does not send or receive files, tried sending from Samsung Galaxy S2 to Amaze and Amaze would acknowledge the request and did nothing, Samsung would report file send failed. Samsung works fine with Laptop, PC, and other phones)
8.) When Saving a New Contact using dialer, the new contact does not show up in contacts but does in dialer contacts list ( above list when dialing numbers) even after restart.
9.) Battery life on the new Amazes are Far Worse then the original Amaze I had. Noticed that both phones running stock software get hot right beneath the Speakerphone / Camera area. Siting Idle in 4 hours one phone with a hot back is at 48% Battery!!! The other I was using moderately to heavy is at 50% in the same time frame.
10.) When I turn the phone off at night to save battery, at around 35% in the morning when I try to turn it on again it is dead. Also, noticed when the phone is fully charged and I turn it off for the night in the morning battery timer in settings about counts the time that it was off instead of when it was actually on. Seems to me that the phone does not turn off when you power it of, it instead goes into a sleeping standby mode. Also when off instead of calls going strait to voicemail they ring for an extended period of time before going to voicemail.
11.) Internal Storage Space is supposed to be 16GB, Phone shows 9.75 GB and 2.3 GB of internal Storage Space.