I have the i5800 since 2 weeks and am very happy with it. I'm going to touch on the points that are I particularly noticed - for the specifications and general see previous speakers.
Screen
The resolution is enough for me. After seeing the Wildfire with 320x240 at the store I was skeptical at first, but it has a few more pixels i5800 with 400x240, which I believe make a difference. Looks clean, and surf is ok. Photos and videos look awesome. Touchscreen - super responsive to the slightest touch.
Format u. Gehaeuse
Size is ok. It might be a little thinner, but fits comfortably in your hand. In area, it is smaller than the huge 4 "top models and fits better into the pocket Very properly processed it is, the cover on the back looks from the outside soldie if one takes it a bit thin;.. The USB port cover is so far also good but a bit loose, let's hope that keeps them a few more years Appearance otherwise super -. ok you see the lubrication finger, but that seems difficult to avoid.
Speed
It all comes down quite smoothly. I have just a few widgets for Calendar, Tasks etc on your homescreen. It has consistently additional, elaborate Widgets open such as Daily Briefing with stock prices, weather etc. pp. you can manage to slow the device is quite - not really surprising.
Camera
Quite ordinary images for my taste, even in the (bright) rooms still ok. Meets my expectations on a mobile phone camera (and below that of an SLR, etc.), who is looking for some holiday pictures to be something else recommended (mE a proper digicam).
Apps
A few good things are already installed. I have installed the following apps and approved: FeedR (2 $, RSS feeds), DPOD (podcasts video + audio), Jabiru (chat for Jabber / XMPP, I use instead of Google Talk), Astrid Tasks (task management with RTM) skobbler (Free Navi). Run everything fine.
Perseverance
When nothing makes so that Samsung runs forever. For that you do not buy it naturally. When efforts are made to get the battery with 3G, GPS u. WLAN empty in one day. I have GPS and Wi-Fi only occasionally in on demand, mostly from 3G (Edge speed ranges email sync, etc.), it lasts as 2-3 days -. Of course highly dependent on the use. When I first had enough of playing around, I hope for a longer duration ...
GPS
It sometimes takes a while to find any satellite. If the device has still found nothing after 10 minutes, exclusively has u turn sometimes miracles -. Immediately there was reception. That seems to me to be a software problem on the early resolution I hope.
Google Sync
I'm a bit cautious with my information and would like next to my Google searches, and installed apps not even confide anything. The Google features are usually very good, and if you like to use them if you please. I have some of the Google products replaced by the following alternatives, and have found that they allow for me similarly good functionality even without Google:
Calendar and contacts - the Google sync I immediately turned off, instead I use the Funambol App 9.0. So I can u Calendar. Contacts with super SyncML sync (2-way), for example. my.funambol.com. The app in the Market is vers. 8.7 and has still not sync calendar, so you have to currently 9.0 still install "by hand". This beta version works for me perfectly, I always have my contacts u. Dates on the Samsung u. 2 laptops (Thunderbird / Lightning) synchronously.
Chat - instead I use the Google Talk app Jabiru with a Jabber account in jwchat.org, where you can also integrate MSN, ICQ or GTalk course accounts ("Transportation").
Maps and GPS -. OSMdroid indicates the current position in OpenStreetMap, which are super in D, the rest of Europe also goes mostly. However, Search is not in it. Skobbler has good GPS navigation when you have the target address - if you have no address but a POI, hotel, business, etc. is not studied this as well as on Google.
Email - I do not use Gmail, have instead my two IMAP accounts involved in the e-mail client, which works great. I let the mail 1x call per hour, doing great.
Overall - highly recommended for normal mortal, not quite technophobic user who does not need the thing as iStatusSymbol while on the bells and whistles, which is possible, 2010, can not do without.
UPDATE July 2011:
Since I brought the phone with the Samsung software to the latest Android version (2.2), it responds more quickly.
Even after almost a year, the mobile phone has barely scratches, despite pockets storage and some falls on Floor + asphalt it still looks like new - surprisingly solid plastic case. As the car phone via Bluetooth (Opel Zafira) it also looks good. Although there are now in the under-200 € price range some interesting alternatives to the i5800, but I am still very happy with the small mobile phone.
Update October 2012:
From today's perspective, the mobile phone is a little outdated. The rate has declined (as would be times a cleanup of the apps necessary), and the surface has become scratched something. The GPS works still not entirely reliable. Battery is still halfway ok. I use the phone still as a second mobile phone; Buy new I would like to receive this model no longer.
