Specification:

Band:GSM 900/1800/1900Mhz, UMTS 2100Mhz
Data: GPRS/UMTS
Size: 98mm x 49.5mm x 23mm
(3.9″ x 1.9″ x .9″)
Weight: 123g (4.3oz)
Battery Life : 325 hours stand by time
3 hours talk time
Main Display : 262k TFT LCD, 176×220 pixel resolution
Sub-Display: N/A
Camera: 1.3 megapixel resolution
Video : Video capture/playback
Messaging : MMS/EMS/SMS
Email
Bluetooth
Infrared
Java
Polyphonics
Memory: 70Mb on board, RS-MMC expansion
Other : Supports Bluetooth printing for prints without a computer

Siemens AF51, a stylish clamshell phone for entry-level consumers. Claiming functionality over frills.

Siemens AF51 Features:

* 4-way navigation key and two soft keys
* Two color displays: 65,536 color internal glass display, 65,536 color external display
* SMS to group, predefined text blocks
* MMS supporting text, still images, voice and animations
* 32-chord polyphonic ringtones, MIDI, SP MIDI, WAV
* Speed dialing keys
* Programmable soft keys
* Incite Service Light Indication LED
* Calendar including day, week, and month
* PC-Synchronization with Mobile Phone Manager
* Personal information manager
* GPRS modem assistant
* J2ME (Java) based games and applications
* Handsfree talking
* Silent alert (vibra)
* Games
* Speaker-dependent voice dialing
* File manager: Flash File System and Explorer
* Calculator
* Currency converter
* Birthday reminder
* Start-up assistant for clock set
* Car Kit Portable as accessory

Siemens AF51 Specifications:

Technical Profile:
* Dimensions:79 x 41 x 19.55 mm
* Weight:80 g
* Standby time: Up to220hrs (standard battery)
* Talktime: Up to 300 min (standard battery)
* Battery:Li-Ion 620 mAh
* Antenna:Integrated
* Main-display:CSTN, 130 x 130 pixels, 65,536 colors
* Sub-display:CSTN, 96 x 64 pixels, 65,536 colors

System/Standards:

* Tri-band: 900/1800/1900 MHz(for EMEA, APAC and LAM)
* EGSM (GSM phase 2/phase 2+)

SIM Functionality/Security Controls:

* SIM lock
* Secure transactions
* Digital signatures
* Digital Rights Management: OMA standard

Data Services:

* SMS, SMS MT, SMS MO
* MMS rel. 4
* GPRS class 8
* WAP 1.2.1, WAP 2.0 content provisioning
* Java MIDP 1.0, CDLC 1.0
* WML/XHTML dual stack

Siemens AL21 cell phone is a slider designed phone with vibrant colors and a transflective TFT LCD display and capable of producing 65k colors.

Siemens AL21 Features:

# 4-way navigation key and two soft keys
# 65,536 color display
# Messaging: SMS, EMS and MMS
# MMS supporting text, still images, voice, and animations
# Speed dialing keys
# Programmable soft keys
# Calendar including day, week, and month
# Customized keypad sounds
# PC-Synchronization with Mobile Phone Manager
# WAP
# Java MIDP 1.0
# J2ME (Java) based games and applications
# Calculator
# Currency converter
# Birthday reminder
# Start-up assistant for clock set, MMS configuration, etc.
# File manager: Flash File System and Explorer
# Car Kit Portable as accessory

Siemens AL21 Specs :

Technical Profile
# Dimensions:86.8 x 45.8 x 19.2 mm (L x W x H)
# Weight:78 g
# Standby time:Up to 220 h (standard battery)
# Talktime:Up to 300 min (standard battery)
# Battery:Li-Ion 600 mAh
# Charging time:Less than 2 h for 100%
# Antenna:Integrated
# Display:130 x 130 pixels, 65,536 colors, TFT, 7 lines plus headline
# Storage:Approx. 1.5 MB
# Connectivity:Serial cable, USB cable

System/Standards:

# Tri-band GSM 900/1800/1900; GSM850/1800/1900
# EGSM (GSM phase 2/phase 2+)
# GPRS multislot class 8, coding scheme 1 -4*
# VocodersFR, HR, EFR, AMR

SIM Functionality/Security Controls:

# SIM Application Toolkit (class 3)
# SIM lock, various levels
# PIN 1 & 2 control
# Ciphering A5.1 and A5.2
# SIM plug-in (3/1.8 V), SAT class 3

Data Services:

# Mobile Internet access (WAP 1.2.1 plus parts of 2.0)
# Data download OTA via SMS or WAP
# MMS release 98
# EMS rel. 4.3
# Data services (CSD) at 9.6 Kbps and GPRS
(up to 53.6 Kbps)