I bought this smartphone because I wanted a newer phone and I also wanted a new palm pilot. I read reviews about the Treo 600 last summer and bought it in November.I'm thrilled about this phone. Its the answer to all of my handheld needs. The reception is better than my older phone, the size and volume is good, its fast, easy to use, and has some great features. The camera and screen resolution could use an upgrade but other than that what's not there can be added by installing various software and there's plenty available for its Palm OS. However let me share with you the most annoying problem... the obvious issue of an exposed keypad. The keyguard feature with the Treo 600 was in fact not a &quot;true&quot; keyguard, in that 3 keys besides the center button would either silence and\or answer the phone erroneously. If I had the phone in my purse or pocket and one of those buttons were pressed when a call came in you'd never hear the phone ring because it had been silenced and answered by the depressed keys.THIS IS A DESIGN FLAW.1. if a call comes in and a button is somehow already depressed it shouldnt answer.. that should require a &quot;change in state&quot;2. the Treo 600 keyguard is supposed to do just that... guard the keys from inadvertent key pressesThis happened OFTEN and led to several embarrassing situations. To make matters worse I contacted Sprint on 3 separate occasions but their support seemed to know next to nothing about the phone. I then contacted Handspring and was told that this wasnt a design flaw but rather was &quot;intended&quot;. FUNNY... I'd combed through the manual and it's very clear on the keyguard function. It states ALL keys except the center key are locked. There is no mention of those 3 keys (space, backspace and return) being active when keyguard is turned on. I was frustrated and on the verge of returning my Treo to Sprint. After getting blown off by the manufacturer I turned to the internet and user forums. I found that many more Treo users were having the same problem. Finally 3rd party vendors caught on and created a &quot;fix&quot; which I was happy to purchase. This is a fairly expensive phone. My problem is that Handspring or Sprint should have issued an official patch to owners as this IS a design flaw. I'm not thrilled with the marginal\poor support and owners should not have to comb the internet seeking support or high demand accessories for that matter.If you dont mind paying a bucks for patch to fix the keyguard issue, are somewhat savvy in using the internet to seek out accessories or information, and are looking for a great smartphone this is the one for you.