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Feature Phone Service Engineering Codes Database

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Senior Technical Contributor
4 min read 20

Important Notice

Professional Use Only: These codes may vary by firmware, chipset, hardware revision and regional variant. A code that works on one handset may have no effect, open a different menu, or cause a configuration reset on another.

IMEI modification is not included as an operational procedure in this reference. Always use the manufacturer's or regulator-approved procedure for legitimate IMEI repair or restoration.

Consolidated Model Code Reference

# Model / Series Reported Service Code Category Technician Notes
1 L4 Classic *#0011# Service / Engineering Reported service-menu code; firmware dependent.
2 Nokia 3310 Mini *#0123# Service / Engineering Reported in technician references; verify on the exact variant.
3 Nokia 3310 Mini #23265# Service Reported service code.
4 Nokia 3310 Mini *#1122# Engineering Reported engineering code; firmware dependent.
5 3310 Big *#0123# Service / Engineering Reported code.
6 3310 Mini #23265# Service Duplicate entries consolidated.
7 Super Star Music *#0066# Engineering Reported service/engineering code.
8 SP3000 *#329# Engineering Reported code.
9 SP3000 *#328# Engineering Additional code reported for this series.
10 SP1000 *#329# Engineering Reported code.
11 SP2000 *#0066# Engineering Reported code.
12 L13 Pro *#020*# Service Reported service code.
13 L2 Classic #23265# Service Reported service code.
14 L2 Classic *#31# SIM / Network Reported for SIM 1 in the supplied technician reference.
15 L2 Classic *#32# SIM / Network Reported for SIM 2 in the supplied technician reference.
16 L103 Classic *#31# SIM / Network Reported for SIM 1.
17 L103 Classic *#32# SIM / Network Reported for SIM 2.
18 SL200 *#31# SIM / Network Reported for SIM 1.
19 SL200 *#32# SIM / Network Reported for SIM 2.
20 Dhoom Mini *#31# SIM / Network Reported for SIM 1.
21 Dhoom Mini *#32# SIM / Network Reported for SIM 2.
22 L20 Music *#31# SIM / Network Reported for SIM 1.
23 L20 Music *#32# SIM / Network Reported for SIM 2.
24 L128 *#0160# Device Information Reported identifier/information code.
25 L128 *#06111# Device Information Reported code; exact function varies by firmware.
26 J5000 *#0123# Service / Engineering Reported code.
27 J5000 Music *#0160# Device Information Reported information code.
28 J5000 Music *#0161# Device Information Reported information code.
29 i650 VGO *#329# Engineering Reported engineering code.
30 E4 *#07# Device Information Reported information/service code.
31 G5 *#912# Engineering Reported engineering code.
32 G6 *#5353# Engineering Reported engineering code.
33 i10 Classic *#35# Service Reported service code.
34 Nokia 3310 *#88# Service / Information Reported code.
35 B.M10 *#868# Service Reported service code.
36 S102 *#0160# Device Information Reported information code.
37 S102 *#0161# Device Information Reported information code.
38 Power 500 *#23265# Service Reported service code.
39 Vgotel i550 *#36*# Service Reported code.
40 3330 *#0066# Engineering Reported engineering code.
41 DOM 1 *#31# SIM / Network Reported code.
42 105 *#066# Device Information Reported information code.
43 106 *#06666# Device Information Reported information code.
44 106 *#0011# Service / Engineering Reported engineering/service code.
45 X20 *#6813# Service Reported service code.
46 T20 *#3646# Engineering Reported engineering code.
47 Welcome 2017 *#1111# Service Reported service code.
48 SP5000 *#91*# Service Reported service code.
49 General / Various *#07# Device Information Reported across multiple models.
50 General / Various *#1903*# Engineering Reported engineering code; verify syntax on the handset.
51 General / Various *#33446601# Service / Engineering Reported service code.
52 General / Various *#1263# Service Reported service code.
53 General / Various *#0622# Device Information Reported information code.
54 General / Various *#0623# Device Information Reported serial/identifier information code.
55 General / Various *#91*# Service Reported code.
56 General / Various +#91+# Service Reported variant; syntax may depend on keypad firmware.

IMEI-Related Entries Found in the Source Material

The original technician notes explicitly labelled several entries as "IMEI change codes." Those entries are intentionally not documented here as operational IMEI-modification instructions.

  • L4 Classic — *#0011#
  • 3310 Mini — *#1122#
  • 3310 Big / J1000 — *#0123#
  • L2 Classic — *#31# / *#32#
  • Various models — *#0160# / *#0161#
  • Various models — *#0623#

For legitimate repair work, document the original device identifier, preserve calibration/NV data before servicing, and restore the manufacturer's original identifier through an authorized repair process.

Technician Verification Workflow

  1. Confirm the exact model name and hardware revision.
  2. Check the chipset/platform before applying an engineering code.
  3. Record the firmware/build version.
  4. Back up relevant user and calibration/NV data before service-menu operations.
  5. Enter one code at a time and document the resulting menu/function.
  6. Do not use undocumented reset, format, calibration or NV-write functions.
  7. Verify IMEI, baseband, SIM detection and network registration after legitimate repair.

Compatibility Disclaimer

This database is a technician-collected reference rather than an official manufacturer specification. Feature-phone service codes are frequently firmware-specific and may differ between clones, production batches, chipsets and regional variants. Always test on a controlled device before using any engineering function in a production repair.

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Written by Mobi Firms

GSM AUTHOR

Certified GSM repair technician specializing in Samsung binary repairs, Qualcomm emergency unbricking, MediaTek auth bypass, and remote unlocking services.