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OPPO R20 secret codes


 Specification OPPO R20 
 Root OPPO R20 
 Unlock OPPO R20 
 Firmware OPPO R20 
 Developer Mode OPPO R20 
 Bypass Lock Screen OPPO R20 
 OPPO R20 Factory Reset 
 Bypass FRP OPPO R20 
 Screenshot OPPO R20 

OPPO R20


OS: Android v7.1 (Nougat)

CPU: Octa core (2.6 GHz, Quad core, Kryo 360 1.7 GHz, Quad core, Kryo 385)
RAM: 64 GB
Display: 6.0 inches (15.24 cm)
Battery: Li-ion




OPPO R20 smartphone runs on Android v7.1 (Nougat) operating system. The phone is powered by Octa core (2.6 GHz, Quad core, Kryo 360 1.7 GHz, Quad core, Kryo 385) processor. It has 64 GB. Internal storage options which can be extended with the help of Yes, Up to 128 GB. The smartphone has a Super AMOLED providing. The smartphone is fueled with a Li-ion. The sensors include Light sensor, Proximity sensor, Accelerometer, Compass, Gyroscope. Connectivity features in the smartphone include Bluetooth, A-GPS, Glonass, 3.5 mm Jack and more.

Secret codes for OPPO R20

*#06#- International Mobile Equipment Identity
*#*#3646633#*#* or *#*#54298#*#*- Engineering Mode (for smartphones based on MTK processor)
*#*#4636#*#*- Testing menu only have Phone Information, Usage Statistics and Wi-Fi information.
*#*#225#*#*- Shows you everything that is saved on your Calendar such as Events, Holidays, Trips, Birthdays, Anniversary
*#*#426#*#*- Information such as Event and part of information about the connection with Google Play Services
*#0011#- ServiceMode
*#0808#- Change USB Settings
*#9900#- Dump mode
*#9090#- Diagnostic configuration
*#0*#- General Test Mode
*#2663#- TSP / TSK firmware update
*#12580*369#- Software and hardware info
*#0283#- Audio Loopback Control
#7465625*638*#- Insert Network Lock Key Code
*#*#759#*#*- RLZ Debug UI (Device ID, Activation Status, Some Ping Stuff, and few other things)
*#*#36245#*#*- Display a debug information about your email ID
*#*#8255#*#*- Access GTalk Service Monitor
*#*#64663#*#*- Test hardware (Version, Bluetooth, Battery, OTG, Speakers)
*#*#7780#*#*- Used for a factory data reset.
*2767*3855#- Full reset
*#*#232338#*#*- Shows Wi-Fi Mac-address
*#*#34971539#*#* or *#34971539#- See camera information.
*#*#1234#*#*- PDA and Phone firmware info
*#*#7594#*#*- Changing the power button behavior-Enables direct poweroff once the code enabled
*#*#1472365#*#*- For a quick GPS test
*#*#273283*255*663282*#*#*- For a quick backup to all your media files
*#*#1575#*#*- GPS Control Menu
*#*#197328640#*#*- Enabling test mode for service activity
*#*#0283#*#*- Packet Loopback test
*#0228#- battery calibration


*#*#232339#*#* OR *#*#526#*#*- Wireless Lan Tests
*#*#0*#*#*- LCD display test Code
*#*#3264#*#*- OPPO R20 Ram version
*#*#1111#*#*- FTA Software version
*#*#2664#*#*- Touch-Screen test
*#*#0588#*#*- Test the proximity sensor
*#*#8351#*#*- Enables voice dialing logging mode
*#*#232331#*#*- Bluetooth Test Mode
*#*#232337#*#- Bluetooth address
*#*#7262626#*#*- Field test
*#*#0289#*#* OR *#*#0673#*#*- Audio test
*#*#0842#*#*- Device test (vibration test and backlight test)
*#*#2663#*#*- Display device's touch-screen version
*#*#44336#*#*- Displays Build time and change list number
*#*#4986*2650468#*#*- PDA, Phone, Hardware, RF Call Date firmware info
*#*#8350#*#*- Disables voice dialing logging mode
*#*#2222#*#*- FTA Hardware verion


GSM codes for OPPO R20



Change code
**03*old code*new code*new code#            
                  - Change code for call barring
**04*old PIN code*new PIN *new PIN#            
                  - Change SIM Card PIN code
**042*old PIN2 code*new PIN2*new PIN2#            
                  - Change SIM Card PIN2 code
**05*PUK code*new PUK*new PUK#            
                  - Change SIM Card PUK code
**052*PUK2 code*new PUK2*new PUK2#            
                  - Change SIM Card PUK2 code
Call waiting
*43#- Ñall waiting Enable
#43#- Ñall waiting Disable
*#43#- Check status of call waiting
Configure Call Forwarding
##002#- Disable All Call Forwarding
**004*PhoneNumber#- Set all configured call diversions to PhoneNumber
##004#- Unregister all configured call diversions
Activate or deactivate Call Forward All
*21*PhoneNumber#- Register and activate divert all calls to PhoneNumber
##21#- Unregister divert all calls
*21#- Enable Divert all calls on your phone
#21#- Disable Divert all calls on your phone
*#21#- Check status of divert all calls
Set call forwarding in case of "no answer"
**61*PhoneNumber#- Register and activate divert on no answer to PhoneNumber
##61#- Unregister divert on no answer
*61#- Divert on no answer calls Enable
#61#- Divert on no answer calls Disable
*#61#- Check status of divert on no answer
Set up call diversion in case of "not available"
**62*PhoneNumber#- Register and activate divert on not reachable
##62#- Unregister divert on not reachable
*62#- Activate divert on not reachable
#62#- Deactivate divert on not reachable
*#62#- Check status of divert on not reachable
Divert calls if your line is "busy"
**67*PhoneNumber#- Register and activate divert on busy
##67#- Unregister divert on busy
*67#- Activate divert on busy
#67#- Deactivate divert on busy
*#67#- Check status of divert on busy all call types
*#67*11#- Check status of divert on busy voice calls
*#67*13#- Check status of divert on busy fax calls
*#67*25#- Check status of divert on busy data calls
All outgoing calls barring
**33*code#- Activate barr all outgoing calls (for code see "Safety" above)
#33*code#- Deactivate barr all outgoing calls
*#33#- Check status of barr all outgoing calls
Activate or deactivate barring all calls
**330*code#- To turn Barring On for all calls
#330*code#- To turn Barring OFF for all calls
*#330*code#- Check status of barr all calls
USSD Codes For Barring all outgoing international calls
**331*code#- Turn On Barr all outgoing international calls
#331*code#- Turn OFF Barr all outgoing international calls
*#331*code#- Check status of barr all outgoing international calls
Set barring of all outgoing international calls except home country
**332*code#- Enable Barr all outgoing international calls except home country on your phone
#332*code#- Disable Barr all outgoing international calls except home country on your phone
*#332*code#- Check status of barr all outgoing international calls except home country
Activate or deactivate barring all outgoing calls
**333*code#- Turn On Barr all outgoing calls
#333*code#- Turn OFF Barr all outgoing calls
*#333#- Check status of barr all outgoing calls
All incoming calls barring
**35*code#- To turn Barring On for all incoming calls
#35*code#- To turn Barring OFF for all incoming calls
*#35#- Check status of barr all incoming calls
Activate or deactivate barring all incoming calls when roaming
**351*code#- To turn Barring On for all incoming calls when roaming
#351*code#- To turn Barring OFF for all incoming calls when roaming
*#351#- Check status of barr all incoming calls when roaming
USSD Codes For Barring all incoming calls
**353*code#- Blocking all incoming calls Enable
#353*code#- Blocking all incoming calls Disable
*#353#- Check status of Blocking all incoming calls


Thomas Nilan
Smartphone Expert
Thomas Nilan is a mobile phone expert with in-depth knowledge of the Android and iOS operating systems, who understands the settings of various hidden features that allow you to expand the capabilities of your smartphone, as well as get information about what is going on inside the phone for future repairs. He is an authority in his field, which has allowed him to become a ghostwriter for several technology publications, and he enjoys writing small mobile applications for testing smartphones.



User questions and comments about secret codes OPPO R20



userZuvakahMarch 03, 2024
The phone has a sleek design and high-quality build. The screen is vibrant and clear. Performance is smooth with quick response times. The camera takes great photos in any lighting. Battery life is decent with fast charging. The phone offers many features and functions. The operating system is user-friendly. Calls are clear and data transfer is fast. The phone is a good value for the price. Overall, a solid choice with few drawbacks.
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