Vintage Nokia: complete guide to hidden codes, network unlock, reset, and technical issues
Share
Do you have a vintage Nokia that doesn't work? This is the most complete guide for solving problems with historical Nokia phones — from the legendary 3310 and 6310i to the N-Series smartphones and the luxurious Nokia 8800.
Nokia hidden codes — valid for almost all models
- *#06# — Show IMEI (works on ALL Nokia models)
- *#0000# — Software version, date and model number
- *#92702689# — Hardware information and production date
- *#7780# — Soft reset (restores settings, keeps data)
- *#7370# — Full hard reset (erases all data — caution!)
- *3370# — Enable Enhanced Full Rate (better call quality)
- #3370# — Disable EFR (longer battery life)
- *4720# — Enable Half Rate (longer battery life)
- *#67705646# — Remove operator logo from screen
- *#2820# — Bluetooth address
- Factory security code: 12345
- Alternative code: 0000
Nokia 3310 and 3330 — the most beloved phones ever
Forgotten PIN:
- Enter wrong PIN 3 times → phone asks for PUK
- PUK is on the original SIM card or by calling the operator
- Warning: 10 wrong PUK attempts → SIM permanently destroyed
Forgotten security code: Try 12345 first then 0000. If it doesn't work:
- *#7780# — soft reset (keeps data)
- *#7370# — full hard reset (erases everything, code returns to 12345)
No network or SIM not recognised: The 3310 only works on GSM 900. Menu → Settings → Network settings → Search operator → Manual. Select your operator. If the list is empty: the SIM doesn't support GSM 900.
Battery doesn't last long: BL-5C batteries are still manufactured and easy to find. Beware of counterfeits.
Display with lines: The display flat cable may be slightly detached. Open the phone and reposition it.
Nokia 6310i — the perfect business phone
Forgotten security code: Try 12345. If not: *#7370# (hard reset, code returns to 12345 — warning: erases all data).
No network or weak signal: The 6310i is triband (900/1800/1900 MHz). Menu → Settings → Network settings → Network selection → Automatic. If nothing: manual selection of your operator.
Nokia 6310i Mercedes — special version: The Mercedes version is rarer and worth more as a collector's piece. Do not modify the software.
Bluetooth doesn't work: The 6310i's Bluetooth is version 1.1 — not compatible with modern Bluetooth 5.x headsets. Works with old Bluetooth 1.x/2.x headsets.
PC synchronisation: Nokia PC Suite with DKU-5 cable or IR adapter. Compatible with Windows XP/Vista/7. For Windows 10/11: install in compatibility mode.
Nokia 8800 — the luxury of mobile telephony
Sliding cover that doesn't slide smoothly:
- Never force it — the internal mechanism breaks
- Clean the side rails with a soft dry cloth
- If the problem persists: professional lubrication of the mechanism
Black screen or display off:
- Hold the power button for 8-10 seconds
- If nothing: remove the battery for 2 minutes and reinsert
- If the phone responds but screen is black: flat cable detached — repair required
BL-4U battery that doesn't last: The BL-4U battery is still available. Beware of counterfeits.
Nokia 8800 Arte and Sirocco — storage: Do not attempt reset or firmware flash — preserving the original software is essential for collection value.
Nokia N95 and N-Series — Symbian smartphones
N95 slow or freezing:
- Menu → Tools → Memory management → delete unused apps
- Move photos and videos to microSD memory card
- If persistent: hard reset → *#7370# (code: 12345)
N95 doesn't connect to 3G networks: Menu → Tools → Settings → Phone → Network → Network mode → select GSM to force 2G.
N95 GPS can't find signal: Go outdoors. Wait 5-10 minutes for first lock. Configure A-GPS: Menu → Location → Positioning server → enable.
N95 camera closes unexpectedly: Cause: insufficient memory. Free at least 10MB of internal memory before opening the camera.
Nokia E90 Communicator — the pocket notebook
E90 slow or freezing:
- Close background apps: hold menu key → close all
- Soft reset: Menu → Tools → Reset → Restore settings → code 12345
QWERTY keyboard with unresponsive keys: Compressed air between the keys. If keys permanently dead: keyboard replacement required.
Inner screen doesn't light up when opened: Open and close several times quickly. If persistent: magnetic sensor to check.
Nokia Communicator 9210 and 9500 — the pioneers
9210/9500 won't start:
- Charge for at least 2 hours with original ACP-7 charger
- If nothing: BP-5L battery completely dead — replace
- Hold the power button for 15 seconds
9210 internal keyboard doesn't work: The flat connector of the keyboard panel detaches with repeated opening. Requires reopening and repositioning of the connector.
Nokia Communicator at Infosate
Nokia Lumia — unlock and Windows Phone problems
Lumia frozen on Nokia logo:
- Hold Volume down + Power for 10 seconds until Nokia logo flashes
- Release and hold only Volume down → recovery mode
- Select "Reset your phone"
Windows Phone Store doesn't work: Microsoft closed the Windows Phone Store in 2023. It is no longer possible to download new apps. Already installed apps continue to work.
Nokia 7 series — design and rarity
Nokia 7110 — cover that doesn't snap: The spring mechanism of the 7110 is fragile. If the cover no longer snaps: the internal spring is broken. Mechanism replacement required.
Nokia 7650 — first Nokia with camera: If it freezes: remove the MMC memory card, restart, reinsert.
Nokia network unlock
If the phone shows "SIM not allowed":
- Note the IMEI: *#06#
- Contact the original operator — under European law they must provide the code free after 12 months
- Online services (UnlockBase, DoctorSIM) by entering IMEI and model
- Enter the NCK code when the phone asks for it
All Nokia sold by Infosate are already unlocked.
General tips for all vintage Nokia
- Note the IMEI: *#06# — needed for unlocks and support
- Back up contacts: Menu → Contacts → Options → Copy to SIM
- Forgotten security code → try 12345, then 0000
- Soft reset (keeps data): *#7780# + code 12345
- Full hard reset: *#7370# + code 12345
- SIM locked: use PUK from operator
Is your vintage Nokia beyond repair? At Infosate you'll find verified and tested vintage Nokia phones, with 14-day guarantee and tracked shipping throughout Europe.