Pda phone review

I just bought a new AT&T Tilt, and have a new 3G AT&T SIM card. I have been having a lot of dropped calls. The conversation fades out then drops after about 15 seconds of conversation. Everything else on this pda/phone is superb, I just need to know what is causing my dropped calls. It happens wherever I am. I called HTC and they say no one else has reported a problem. Anyone else experiencing this problem? Thank You!

Its called a GSM Quad Band H08, touch screen. Its a at&t or t moble phone. They say its type is PDA (smart phone). It has a large screen with the numbers on the bottem. Its not a slider. Here are some of the specifics on it:
Specifications:

Main function: Large screen cell phone with easy to use dialing keypad with extended function dedicated keys (quad band, dual SIM cellphone)
Additional functions: Touchscreen for all phone and media functions, 1.3 megapixel camera with 3x digital zoom, FM radio, rich language
support
GSM Compatibility: Quad Band 850Mhz, 900MHz, 1800MHz, 1900Mhz
Screen: 3.0 inch TFT LCD QVGA, 240×320 with 260K colors
Screen Type: Hi-Def Polarized Touchscreen
Memory: 256MB TF Card/micro SD card included
Bluetooth Profiles: Handsfree, Headset, A2DP, AVRCP, HID, SPP, DUN, OPP, FTP - All Supported
GPRS Support: YES
SIM Card Slot: YES - 2
SIM Card Modes: Dual SIM open, SIM1 only, SIM2 only
Special Dedicated Function Buttons: YES - SIM1, SIM2, FM, MP3
Mobile internet: Yes - WAP (if supported by your network carrier)
Video Games: 4 classic strategy games
supports GPRS&WAP&MMS
FM Radio: 87.5-108Mhz (worldwide)
Languages: English, French, Spanish, German, Portuguese, Italian, Malaysian, Indonesian, Vietnamese, Turkish, Russian, Arabic, Thai
Battery Type: Rechargeable 3800mAh Li-ion
Battery Life:
- Talk Time: Up to 6 hours
- Music Play: Up to 12 hours
- Stand By: Up to 400 hours

Multimedia:

1.3 Megapixel Still Camera
- Resolution: 640×480, 240×320, 320×240, 160×120, 80×60
- Image Quality (compression): High, Normal, Low
- Snapshot Options: 3x Digital Zoom, Timer, Continuous Shot, Scene Modes
- Additional Picture Settings: Effects, White Balance, Add Frame
- EV: 8 steps (+4 to -4)
- Banding: 50Hz, 60Hz

Video Camera
- Resolution: 640×480
- Video Quality (compression): High, Normal, Low
- Additional Video Settings: 3x Digital Zoom, Effects, White Balance, Scene Modes
- EV: 8 steps (+4 to -4)
- Banding: 50Hz, 60Hz

Viewing and Listening Formats
- Video Formats: 3GP, MPEG4 (AVI)
- Picture Formats: JPEG, BMP, GIF
- Music and Sound Formats: MP3, WMA, WAV, AMR, AWB
I bought it for $85 dollars

What does it mean if a cell phone is without contract? Does it mean it is unlocked (able to use any sim card from any provider), or just that you have to use the same company’s plans? An example is on ebay at the given link. Does that mean that that phone can be used with any cell phone provider or just that particular provider? THANKS A BUNCH!! http://cgi.ebay.com/T-MOBILE-DASH-s620-HTC-UNLOCKED-PDA-GSM-WINDOWS-PDA-PHO_W0QQitemZ170261151747QQihZ007QQcategoryZ3312QQssPageNameZWDVWQQrdZ1QQcmdZViewItem

What does it mean if a cell phone is without contract? Does it mean it is unlocked (able to use any sim card from any provider), or just that you have to use the same company’s plans? An example is on ebay at the given link. Does that mean that that phone can be used with any cell phone provider or just that particular provider? THANKS A BUNCH!! http://cgi.ebay.com/T-MOBILE-DASH-s620-HTC-UNLOCKED-PDA-GSM-WINDOWS-PDA-PHO_W0QQitemZ170261151747QQihZ007QQcategoryZ3312QQssPageNameZWDVWQQrdZ1QQcmdZViewItem

can i buy a pda type phone? or will its features not work? what is compatable? i know i need a GSM phone because it is tmobile, and it needs to be unlocked so i can use it on tmobile if it is cingular.

my plan is a family share plan and unlimited texts, will the email features and internet features and text features not work on a pda or smart phone such as PalmOne’s Treo?? need help

What does it mean if a cell phone is without contract? Does it mean it is unlocked (able to use any sim card from any provider), or just that you have to use the same company’s plans? An example is on ebay at the given link. Does that mean that that phone can be used with any cell phone provider or just that particular provider? THANKS A BUNCH!! http://cgi.ebay.com/T-MOBILE-DASH-s620-HTC-UNLOCKED-PDA-GSM-WINDOWS-PDA-PHO_W0QQitemZ170261151747QQihZ007QQcategoryZ3312QQssPageNameZWDVWQQrdZ1QQcmdZViewItem