Size
-Weight: 142 g (Standard Battery)
-Dimensions: 129 x 47 x 28 mm, 130 cc

Display
-Illuminated dot matrix display
-Up to 5 lines for text, numbers, graphics
-Dynamic display for large/small font
-Signal, battery and status indicators
-Last digit and full display clear
-Full screen cursor editor

Keypad
-One-touch voice mail button
-International access button (+)
-Keyguard
-Illumination

Call management
-Several speed dialling methods
-Call repeat
-Any key answering
-Conference calling (1+5 people)
-Call waiting / call hold
-Call transfer
-Call/fax divert, separate for voice and fax
-Display number or name of incoming caller
-Disable/enable of number or name in connected calls
-Call grouping features
-Advanced tone dialling (DTMF) features
-Automatic and manual network selection
-Welcome message
-Alternate speech and data or fax

Memory functions
-150 names and numbers in phone, up to 255 in SIM
-10 last calls dialled/received/missed with time stamp
-Page function: names, numbers or both shown when scrolling memory
-Phone book fetch service for SMS and calendar
-Phone book listing for name, name and number, or for name big in font

Real time clock with alarm

Calendar function
-writing and viewing notes, reminders, meetings, birthdays and calls

Supports all three voice codecs
-Half rate
-Full rate
-Enhanced full rate (EFR)

Short Message Service
-Send and receive SMS messages up to 160 characters
-SMS class 0, 1, 2, 3 supported
-Return Call Type Message: easy to call number in message
-Sent message delivery report
-Easy access to Smart Messaging services with downloadable menus

Security and cost control
-Emergency calls without SIM card (network dependent)
-Programmable security level and code
-Various call barring possibilities
-Advice of charge
-Setting of cost limit to outgoing calls (also incoming calls if costs are invoiced)
-Last and cumulative call duration and charge
-Fixed dialling: calls to predefined numbers or prefixes
-Closed user group

Optional controls
-31 languages in factory preset language groups
-Automatic menu language selection if supported by SIM
-35 selectable ringing tones, SMS alert tones
-Selectable ringing volume, including Silent Alert with flashing lights
-Adjustable profiles for different usage situations with call grouping and caller group identification

GSM data transmission
-9,600 bps, up to 34,400 bps if compressed
-Send and receive telefaxes, e-mail, files
-Data transmission with automatic error correction
-Mobile Terminated Unstructured Supplementary Services Data
-Built-in infrared link (e.g. to compatible PC, printer, another Nokia 6100-series phone)