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Oppo A91 secret codes


 Specification Oppo A91 
 Hard reset Oppo A91 
 Root Oppo A91 
 Unlock Oppo A91 
 Firmware Oppo A91 
 Developer Mode Oppo A91 
 Bypass Lock Screen Oppo A91 
 Oppo A91 Factory Reset 
 Bypass FRP Oppo A91 
 Screenshot Oppo A91 

Oppo A91


OS: Android 9.0 (Pie); ColorOS 6.1

CPU: Octa-core (4x2.1 GHz Cortex-A73 & 4x2.0 GHz Cortex-A53)
Display: 6.4" inc
Camera: 48 MP, Quad




Oppo A91 smartphone runs on Android 9.0 (Pie); ColorOS 6.1 operating system. The phone is powered by Octa-core (4x2.1 GHz Cortex-A73 & 4x2.0 GHz Cortex-A53) processor. It has 128GB 8GB RAM. Internal storage options which can be extended with the help of microSD, up to 256 GB (dedicated slot). The smartphone has a AMOLED providing, Screen-to-Body Ratio of 85.5%. The smartphone is fueled with a 4025 mAh,  Non-removable Li-Po. The main camera of the smartphone consists of a 48 MP, Quad. The sensors include Fingerprint (under display, optical), accelerometer, gyro, proximity, compass. Connectivity features in the smartphone include Bluetooth, A-GPS, GLONASS, BDS, Wi-Fi, 3.5 mm Jack and more. The Oppo A91 are available in various colors such as Dark Blue, Red, Blue. It measures 160.2 x 73.3 x 7.9 mm and weighs 172 g.

Secret codes for Oppo A91

*#06#- IMEI number
*#*#3646633#*#* or *#*#54298#*#*- Engineering Mode (for smartphones based on MTK processor)
*#*#4636#*#*- This code can be used to get some interesting information about Oppo A91 (Phone, Battery, WiFi and other)
*#*#225#*#*- This code show the number of festivities and events in your calendar
*#*#426#*#*- 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. Unique Device ID, PID, ACAP
*#*#36245#*#*- This code show Email debug info
*#*#8255#*#*- To launch Google Talk service monitor
*#*#64663#*#*- Hardware Test (Version, Sensors, Sim, WLAN, Bluetooth, Battery, OTG, Radio, Speakers)
*#*#7780#*#*- Factory Data Reset (all phone data will be erased).
*2767*3855#- The firmware of the device is completely reinstalled
*#*#232338#*#*- View Wi-Fi Mac-address
*#*#34971539#*#* or *#34971539#- Full information about the camera.
*#*#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#*#*- Different GPS Test Code
*#*#197328640#*#*- Enabling test mode for service activity
*#*#0283#*#*- Packet Loopback test
*#0228#- battery calibration


*#*#232339#*#* OR *#*#526#*#*- Wireless Lan Tests
*#*#0*#*#*- Mobile phone LCD test
*#*#3264#*#*- Ram version
*#*#1111#*#*- FTA Software version
*#*#2664#*#*- Touch-Screen test
*#*#0588#*#*- Proximity Sensor Test Mode
*#*#8351#*#*- Enables voice dialing logging mode
*#*#232331#*#*- Bluetooth test
*#*#232337#*#- Displays bluetooth device address
*#*#7262626#*#*- Field test
*#*#0289#*#* OR *#*#0673#*#*- Audio test
*#*#0842#*#*- Backlight/vibration test
*#*#2663#*#*- The displays touch-screen version of Android device
*#*#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 A91



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
Activate or deactivate Call waiting
*43#- Activate call waiting
#43#- Deactivate call waiting
*#43#- Check status of call waiting
Call Forwarding
##002#- Disable All Call Forwarding
**004*PhoneNumber#- Set all configured call diversions to PhoneNumber
##004#- Unregister all configured call diversions
Call Forward All
*21*PhoneNumber#- Register and activate divert all calls to PhoneNumber
##21#- Unregister divert all calls
*21#- To turn Divert On for all calls
#21#- To turn Divert OFF for all calls
*#21#- Check status of divert all calls
Set up call diversion in case of "no answer"
**61*PhoneNumber#- Register and activate divert on no answer to PhoneNumber
##61#- Unregister divert on no answer
*61#- Activate divert on no answer calls
#61#- Deactivate divert on no answer calls
*#61#- Check status of divert on no answer
Set call forwarding 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
Call diversion when "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
Blocking all outgoing calls
**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
Blocking all calls
**330*code#- Enable Barr all calls on your phone
#330*code#- Disable Barr all calls on your phone
*#330*code#- Check status of barr all calls
Set barring of all outgoing international calls
**331*code#- Activate barr all outgoing international calls
#331*code#- Deactivate Barr all outgoing international calls
*#331*code#- Check status of barr all outgoing international calls
USSD Codes For Barring all outgoing international calls except home country
**332*code#- To turn Barring On for all outgoing international calls except home country
#332*code#- To turn Barring OFF for all outgoing international calls except home country
*#332*code#- Check status of barr all outgoing international calls except home country
Blocking all outgoing calls
**333*code#- Activate barr all outgoing calls
#333*code#- Deactivate Barr all outgoing calls
*#333#- Check status of barr all outgoing calls
Blocking all incoming calls
**35*code#- Enable Barr all incoming calls on your phone
#35*code#- Disable Barr all incoming calls on your phone
*#35#- Check status of barr all incoming calls
Blocking all incoming calls when roaming
**351*code#- Enable Barr all incoming calls when roaming on your phone
#351*code#- Disable Barr all incoming calls when roaming on your phone
*#351#- Check status of barr all incoming calls when roaming
Set barring of all incoming calls
**353*code#- Activate Blocking all incoming calls
#353*code#- Deactivate Blocking all incoming calls
*#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 A91



userHomcqyMarch 01, 2024
The phone has a sleek design with a durable build. The AMOLED screen is vibrant and sharp. The performance is smooth, and the camera takes great photos. Battery life is decent. Software is user-friendly. Calls and network connectivity are reliable. Good value for the price. Overall, a solid smartphone choice.
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