Nokia 6310i: Complete Guide — History, Specifications, Secret Codes, Bluetooth, Collecting 2026
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The Nokia 6310i is the best business phone ever made. Not an opinion — it's the unanimous verdict of those who used it professionally in the 2000s and of those still seeking it today. Up to 17 days standby, call quality superior to any modern smartphone, near-legendary robustness, Nokia's first phone with integrated Bluetooth, Nokia's first phone on the DCT4 platform. It was the phone of CEOs, lawyers and diplomats — and was integrated into Lexus and Mercedes vehicles from the factory. This is the most complete guide ever written in English on the Nokia 6310i.
1. The History of the Nokia 6310i
The Nokia 6310 — 21 March 2001
Before understanding the 6310i, you need to understand the 6310. The Nokia 6310 was announced on 21 March 2001 — alongside the Nokia 8310 — as the successor to the Nokia 6210. It was a quiet revolution:
- First Nokia on the DCT4 platform — the new hardware architecture that would dominate Nokia for years
- First Nokia with Bluetooth (jointly with the Nokia 8310) — Bluetooth 1.1, a technology almost unknown to the general public at the time
- First Nokia with GPRS (jointly with the Nokia 8310)
- First Nokia with ADPCM startup sound — the Nokia Tune in advanced audio format
- First Nokia Wallet function — PIN-protected electronic wallet for confidential notes
Internal codename: "Lois" (type NPE-4). Available in Jet Black, Sirocco Bronze, Mistral Beige. Display had green backlight.
The Nokia 6310i — 12 March 2002
The Nokia 6310i (type NPL-1, codename "Triton") was announced on 12 March 2002 — the same day as the Nokia 3410, 3510, 7210 and 8910. Five key improvements over the 6310:
- Tri-band instead of dual-band — adds GSM 1900 for worldwide use (USA, Canada, Latin America)
- Java support (CLDC 1.0, MIDP 1.0, Nokia UI API) — allows J2ME applications to be installed
- Blue display backlight — more elegant than the 6310's green
- List of paired Bluetooth devices — improved Bluetooth management
- Sending SMS to email address — direct email integration from SMS
Visual difference between 6310 and 6310i: keypad lettering is black on the 6310 and white on the 6310i.
Colours available: Jet Black and Mistral Beige (like the 6310) plus Lightning Silver — exclusive to the 6310i and the most sought-after colour today.
Why the 6310i Dominated the Business Market
Record battery life: up to 408 hours standby under ideal conditions — 17 real-world days in mixed use. No competitor came close. A manager could travel for a full week without worrying about charging.
Call quality: the DCT4 platform with EFR codec delivered audio quality superior to modern smartphones for voice calls. Managers used the 6310i for important calls even when they had more modern smartphones available.
Simplicity: no useless apps, no distractions. Powerful phonebook (500 contacts × 3 numbers each), SMS, calendar, calculator, Bluetooth. Everything a professional needs.
Robustness: polycarbonate body resisted impacts that would break any smartphone.
The 6310i in Cars — Lexus, Mercedes, BMW
The 6310i became the official phone of Mercedes-Benz and then Lexus. Nokia developed specific cradles for premium vehicle integration:
The cradle provided electrical power, routed audio through the car's audio system, and connected to an external antenna mounted on the roof — providing optimal signal even in motion. Calls were answered and ended from the steering wheel, audio through the car's speakers.
From 2003: Nokia began integrating the 6310i directly into some Lexus models — the phone was pre-installed from the factory in the dashboard, not an optional accessory. A premium car with a premium phone pre-installed from the factory — in the era this was an absolute status symbol.
2. Complete Technical Specifications
| Specification | Nokia 6310 | Nokia 6310i |
|---|---|---|
| Type / Codename | NPE-4 / Lois | NPL-1 / Triton |
| Announced | 21 March 2001 | 12 March 2002 |
| First available | November 2001 | Q2 2002 |
| Discontinued | 2005 | 2005 |
| Made in | Germany | Germany |
| Dimensions | 129 × 47 × 19 mm | 129 × 47 × 19 mm |
| Weight | 111 g | 111 g |
| Processor | 50 MHz ARM7TDMI | 50 MHz ARM7TDMI |
| Operating system | Nokia Series 30 | Nokia Series 30 |
| Internal memory | 174 KB | 174 KB |
| Display | STN LCD 96×65 px, 1.7" — green backlight | STN LCD 96×65 px, 1.7" — blue backlight |
| Networks | GSM 900/1800 (dual-band) | GSM 900/1800/1900 (tri-band) |
| GPRS | Class 4 | Class 4 |
| HSCSD | Yes | Yes |
| Bluetooth | 1.1 (HFP, HSP, OPP, DUN) | 1.1 (HFP, HSP, OPP, DUN) + device list |
| IrDA | Yes | Yes |
| Java | No | Yes (CLDC 1.0, MIDP 1.0) |
| WAP | 1.2.1 | 1.2.1 |
| Battery | BPS-2, 1100 mAh Li-Po | BPS-2, 1100 mAh Li-Po |
| Standby | up to 408 hours (17 days) | up to 408 hours (17 days) |
| Talk time | up to 4.5 hours | up to 4.5 hours |
| Phonebook | 500 contacts × 3 numbers | 500 contacts × 3 numbers |
| Saved SMS | 150 | 150 |
| Key lettering | Black | White |
| Colours | Jet Black, Sirocco Bronze, Mistral Beige | Jet Black, Mistral Beige, Lightning Silver |
| SAR head | — | 0.72 W/kg |
| SAR body | — | 0.88 W/kg |
3. Nokia 6310i Firmware Versions — Complete History
*#0000# shows: V X.XX / DD-MM-YYYY / NPL-1
| Version | Date | Key changes |
|---|---|---|
| V 5.22 | 2002 | Initial release |
| V 5.50 | 2002-2003 | Adds Java sideloading via Bluetooth (in addition to IrDA) |
| V 5.52 | 2003 | Common version, pre-security patch |
| V 5.60 | 2004 | Critical Bluetooth security patch, Russian T9 dictionary update |
| V 7.00 | 2004 | Final and most secure version, kJava implementation update |
The most important version is V 7.00 — Nokia's final release, the most stable and secure. If your 6310i shows a version lower than V 5.60, it is vulnerable to the Bluetooth flaw documented in 2004.
The Bluetooth Vulnerability on Pre-V 5.60 Firmware
In 2004 a critical vulnerability was discovered and published in the Bluetooth of Nokia 6310i units with firmware below V 5.60. The vulnerability allowed an attacker within Bluetooth range to:
- Read and insert phonebook entries
- Plant fake SMS messages in the phone
- Bug the phone (intercept the conversation)
- Change the call forwarding number
Nokia patched this in firmware V 5.60 and then V 7.00, but did not communicate the issue clearly to the public. If your 6310i has firmware V 5.52 or earlier, you should update it.
4. All Nokia 6310i Secret Codes — Complete List
Information codes
| Code | Function |
|---|---|
*#06# |
IMEI |
*#0000# |
Firmware version — version, build date, type NPL-1 |
*#92702689# |
Warranty Data menu — serial number, production date, first activation, talk time hours, repair dates. Exit: switch off and on |
*#3283# |
Production week — format YYWW |
*#2820# |
Bluetooth MAC address — unique to each 6310i |
*#7760# |
Production serial number |
*#746025625# |
SIM Clock status |
Audio and network codes
| Code | Function |
|---|---|
*3370# |
Enable Enhanced Full Rate (EFR) — superior call audio quality |
#3370# |
Disable EFR |
*4720# |
Enable Half Rate — extends battery life |
#4720# |
Disable Half Rate |
*#7220# |
Enable GPRS PCCCH (Packet Common Control Channel) |
*#7230# |
Disable GPRS PCCCH |
Reset codes
| Code | Function |
|---|---|
*#7780# |
Reset settings — without deleting contacts/SMS |
*#7370# |
Full reset — wipes everything ⚠️ |
Lock and operator codes
| Code | Function |
|---|---|
*#67705646# |
Remove operator logo from display |
#pw+1234567890+1# |
Check Network lock status |
#pw+1234567890+2# |
Check Network Subset lock |
#pw+1234567890+3# |
Check Country lock |
#pw+1234567890+4# |
Check SIM lock |
The *#2820# Code — Bluetooth MAC Address
This code shows the Bluetooth MAC address of the Nokia 6310i — the unique physical address of the Bluetooth module, in format XX:XX:XX:XX:XX:XX. This was not relevant on the Nokia 3310 (no Bluetooth). On the 6310i it's essential: useful when manually configuring Bluetooth pairing on systems that require MAC entry (some Mercedes/Lexus systems).
Call forwarding and management
| Code | Function |
|---|---|
##002# |
Cancel all call forwarding |
**21*[number]# |
Activate unconditional forwarding |
##21# |
Deactivate unconditional forwarding |
*#21# |
Check unconditional forwarding |
**61*[number]# |
Activate "no answer" forwarding |
**62*[number]# |
Activate "not reachable" forwarding |
**67*[number]# |
Activate "busy" forwarding |
##004# |
Cancel all conditional forwarding |
*43# |
Enable call waiting |
#43# |
Disable call waiting |
#31#[number] |
Hide number for this call |
PIN and PUK
| Code | Function |
|---|---|
**04*[old]*[new]*[new]# |
Change PIN |
**042*[old]*[new]*[new]# |
Change PIN2 |
**05*[PUK]*[new]*[new]# |
Unlock SIM with PUK |
5. Bluetooth on the Nokia 6310i — Complete Guide
The Nokia 6310i supported Bluetooth 1.1 with four profiles:
| Profile | Function |
|---|---|
| HFP (Hands-Free Profile) | Connection to earpieces and car hands-free systems |
| HSP (Headset Profile) | Connection to simple headsets |
| OPP (Object Push Profile) | Sending and receiving files (contacts, business cards) |
| DUN (Dial-Up Networking) | Using the 6310i as a GPRS modem for laptops |
DUN was one of the most-used profiles by professionals: connecting a laptop to the 6310i via Bluetooth and browsing the internet using the phone's GPRS. In 2002-2004, before ubiquitous WiFi, this was the solution for working online while mobile.
Java Sideloading via Bluetooth (firmware ≥ V 5.50)
With firmware 5.50 or higher it became possible to install Java applications (JAR files) directly via Bluetooth using PC software such as OPM II or Gammu. Before V 5.50, installation was only possible via IrDA.
Important JAR size limit: maximum 32,200 bytes. Only very lightweight J2ME apps work. Paradoxically the 6310i has a lower JAR limit than the entry-level Nokia 3410 — due to the different memory architecture on the early DCT4 platform.
6. How to Tell Nokia 6310 from Nokia 6310i
The two versions are easily confused. Here are the definitive differences:
| Nokia 6310 | Nokia 6310i | |
|---|---|---|
| Networks | Dual-band (900/1800) | Tri-band (900/1800/1900) |
| Display | Green backlight | Blue backlight |
| Key lettering | Black | White |
| Java | No | Yes |
| Colours | Jet Black, Sirocco Bronze, Mistral Beige | Jet Black, Mistral Beige, Lightning Silver |
| Internal code | NPE-4 | NPL-1 |
| Codename | Lois | Triton |
*#0000# |
Shows NPE-4 | Shows NPL-1 |
The safest method: type *#0000# — NPE-4 = 6310, NPL-1 = 6310i.
7. The Nokia 6310 Revival (2021 and 2024)
In 2021 Nokia (HMD Global) released a 6310 revival for the 20th anniversary — with a 2.8" colour display, polyphonic ringtones, VGA camera, microSD slot. A modern feature phone in the classic 6310 design.
A second revival arrived in 2024. These revivals confirm the lasting cultural impact of the 6310i — no other business phone of the same era has had this continuity of recognition.
8. Nokia 6310i Collector Value 2026
The Nokia 6310i is among the most sought-after vintage Nokia phones for a simple reason: many professionals who used it in the 2000s want it back. Not just nostalgia — the call quality was genuinely superior to modern smartphones for professional voice use.
| Condition | Approximate value 2026 |
|---|---|
| Sealed in original box | €200-400+ |
| Mint condition with box and accessories | €80-150 |
| Excellent condition (working, no scratches, with battery) | €30-70 |
| Good condition (working, normal use) | €15-35 |
| Working with cosmetic defects | €8-20 |
Most valuable variants:
- Lightning Silver — colour exclusive to the 6310i, rarer than Jet Black and Mistral Beige
- Firmware V 7.00 — final Nokia version, most stable and secure
- With original car cradle — the complete vehicle integration system
- With complete original box — manual, charger, earpiece
9. Nokia 6310i Network Unlock
The 6310i was rarely network-locked (it was a business phone usually bought at full price), but some units distributed through business operators were locked.
Unlock procedure:
- Insert SIM from a different operator
- Switch on → unlock code requested
- Enter the 10-digit NCK code (Nokia DCT4 phones use 10 digits, not 8 like Asian brands)
Check if locked: #pw+1234567890+1# — if it returns lock information, the phone is network-locked.
10. Nokia 6310i and the DCT4 Platform
The 6310i was the first Nokia business phone on the DCT4 platform — the hardware architecture that would dominate Nokia until the Symbian S60 era.
DCT4 improvements over DCT3 (Nokia 3310's platform):
- ARM7TDMI processor at 50 MHz vs 26 MHz of DCT3
- Bluetooth support (absent on DCT3)
- GPRS support (absent on DCT3)
- Java support on some models
- More advanced Series 30 OS vs Series 20
11. Frequently Asked Questions
Does the Nokia 6310i still work in 2026? Yes, perfectly. The 6310i is tri-band GSM 900/1800/1900 — covering almost all still-active GSM networks worldwide. Call quality still exceeds many smartphones for professional voice use.
What is the main difference between 6310 and 6310i? Three key differences: the 6310i is tri-band (adds GSM 1900 for US/global use), has a blue display backlight instead of green, and supports Java. The certain way to distinguish them is *#0000#: NPE-4 = 6310, NPL-1 = 6310i.
How do I know if I have a 6310 or a 6310i? Type *#0000# — NPL-1 = 6310i, NPE-4 = 6310. Or look at the display backlight: green = 6310, blue = 6310i.
Why was the 6310i in Mercedes and Lexus cars? Nokia developed premium integration cradles providing power, audio routing through the car system and use of the vehicle's roof-mounted external antenna. From 2003 the 6310i was factory-installed in some Lexus models.
Which firmware version is the best? V 7.00 — Nokia's final release, the most stable and with all Bluetooth security patches applied. Versions before V 5.60 have a documented Bluetooth security vulnerability.
Does the Nokia 6310i support WhatsApp or modern apps? No — the Series 30 operating system supports only J2ME (mobile Java) with very lightweight apps. It does not support Android, iOS or modern applications. It is a feature phone, not a smartphone.
Original Nokia 6310i at Infosate
At Infosate you'll find a selection of original Nokia 6310i phones — verified, working, with battery. Every unit is tested with *#0000# to confirm NPL-1 (authentic 6310i) and with *#92702689# to verify actual condition. The firmware version is checked and communicated.