The Nokia Lumia 900 'ACE'comes as one of the first Windows Phone smartphones to support LTE connectivity. It also features a 4.3" WVGA AMOLED display with ClearBlack technology, polycarbonate unibody in different colors, 1.4GHz CPU, 16GB of internal memory and 1830mAh battery. It has an 8MP camera, aided by the Carl Zeiss optics with f2.2/28mm lens, and features a tech called "double wide mode", for extra scene width going into your frame. The phone weighs 5.6 ounces (160g) and is 127.8 x 68.5 x 11.5 mm in dimensions.

FEATURES:

Display & Design:
Lumia 'ACE' comes with A 4.3 inch Clear black glass capacitive touchscreen and the screen dimensions are 800 px height and 480 px width. This smartphone's thickness is just 0.45 inches which you can call it as a slim mobile.

Camera: 
It has an 8 megapixel rear camera with dual LED flash, Auto Focus, Carl Zeiss optics and a 1 megapixel front camera for clear video calls. This 1mp front camera lets you have Face-to-Face chats with your friends or with the people you want.

Memory:
Lumia 900'ACE' has 512 MB RAM and 16 GB mass memory and SkyDrive cloud storage.But, there is no slot available for Micro SD cards.

Battery:
It has 1830 mAh battery which gives 7 hours of 2G and 3G talk-time. I would say, this is the best high-end smartphone ever from Nokia. Its battery life is amazing. The standby time of this windows 7.5 Mango is 300 hour. You can also play music up to 60 hours and Video playback up to 6.5 hours.

Communication and Sharing : 
Now send mails to yahoo, Gmail, Hotmail and many other from your phone. Stay connected all day with your friends through Social networks. You can also share Internet with a WiFI Hotspot for 4 WiFi enabled phones, so your phone acts as a WiFi hot spot for your friends too.

People Hub : 
This is an app which is more than address book.You will get updated with a notification on your home screen whenever your selected friends update their status on their Social Networks. You can send messages, write on their Facebook wall, post some pictures and many more by just tapping with your fingers.

Music : Listen to the latest Music available on the Android Market on your phone.No need to keep searching for latest music. Nokia sends updates to your home screen as notification. So when ever a new album comes, you will get a notification on your home screen.Also, there is an app for radio called Mix radio which lets you tune radio. This app is also available on the Lumia 800.