Unlocking by code OPPO

3 min read

OPPO Network Unlock — Complete Guide

This guide covers how to unlock an OPPO phone from carrier restrictions using the unlock code received from code-gsm.com. The process works on all OPPO models locked to any network worldwide.

What You Need

Your OPPO phone's IMEI (dial *#06# to find it)
Your current carrier name
Unlock code from code-gsm.com (received by email)
A SIM card from a different carrier (to test after unlocking)

Method 1: Dialer Code (Most OPPO Models)

Works on OPPO A, F, R, K, Reno, Find series running ColorOS 6 and earlier

Power ON your OPPO phone (any SIM or no SIM)
Open the Phone Dialer
Type: *#3988691#
An unlock code input window appears
Enter the unlock code you received
Tap OK / Confirm
Phone is now permanently unlocked

Method 2: Foreign SIM Prompt (ColorOS 7/11/12+)

For newer OPPO phones (2020+) and Realme devices running ColorOS 7 or newer

Insert a SIM card from a different carrier
Power on the phone
A prompt appears: "SIM Network Unlock PIN"
Enter the unlock code — tap OK
If no prompt appears: go to Settings → SIM Card & Mobile Data → Network Unlock

Method 3: No SIM Method (If Other Methods Fail)

Power ON without any SIM card
Open the Dialer and type *#3988691#
Enter the unlock code when prompted
Tap OK

Supported OPPO Series

Series	Models
OPPO A series	A1k, A3s, A5, A5s, A7, A9, A11, A12, A15, A16, A17, A31, A33, A52, A53, A54, A55, A72, A73, A74, A76, A78, A91, A92, A95, A96
OPPO F series	F1, F1 Plus, F1s, F3, F5, F7, F9, F11, F15, F17, F19, F21
OPPO Reno	Reno2, Reno3, Reno4, Reno5, Reno6, Reno7, Reno8, Reno10
OPPO Find	Find X2, Find X3, Find X5, Find X6, Find N, Find N2
OPPO R series	R9, R9s, R9 Plus, R11, R11s, R15, R17
Realme	Realme 1, 2, 3, 5, 6, 7, 8, 9, 10, C-series, X-series, GT-series, Narzo-series

How to Check if Your OPPO is Carrier Locked

Insert a SIM from a different carrier and power on. If you see:

"SIM Restricted" or "Enter SIM Network Unlock PIN" → Carrier locked (needs unlock)
Normal signal bars with network name → Already unlocked

Troubleshooting

Problem	Solution
*#3988691# dialer code does nothing	Try inserting a foreign SIM and restart — unlock prompt may appear automatically on boot
"Invalid Code" error	Verify the code was entered correctly. Check for leading or trailing zeros
Phone still locked after code entry	Ensure the code matches your specific IMEI and carrier. Contact code-gsm.com support
No unlock option in Settings	Use the dialer code method (*#3988691#) or contact code-gsm.com support

Frequently Asked Questions

Q: Is OPPO carrier unlock the same as bootloader unlock?
A: No. Carrier/network unlock removes the SIM lock so you can use any carrier. Bootloader unlock allows custom ROMs. The code-gsm.com service is carrier unlock only.

Q: Will unlocking affect my data or ColorOS?
A: No. Carrier unlock does not affect the operating system, apps, or any stored data.

Q: How long for delivery?
A: Typical delivery time is shown on the service page before ordering at code-gsm.com.

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