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Zen 303 QHD secret codes


 Specification Zen 303 QHD 
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 Screenshot Zen 303 QHD 

Zen 303 QHD


OS: Android v4.2.2 (Jelly Bean)

CPU: 1.3 GHz, Dual Core Processor
RAM: 512 MB
Display: 4.5 inches, 480 x 800 pixels
Camera: 8 MP
Battery: 1650 mAh




Zen 303 QHD smartphone runs on Android v4.2.2 (Jelly Bean) operating system. The phone is powered by 1.3 GHz, Dual Core Processor processor. It has 512 MB Ram. Internal storage options which can be extended with the help of memory card upto 32 GB. The smartphone has a Removable Battery providing. The smartphone is fueled with a 1650 mAh. The main camera of the smartphone consists of a 8 MP. Connectivity features in the smartphone include, Wi-Fi and more.

Secret codes for Zen 303 QHD

*#06#- International Mobile Equipment Identity
*#*#3646633#*#* or *#*#54298#*#*- Engineering Mode (for smartphones based on MTK processor)
*#*#4636#*#*- Open testing menu (Phone, Battery, WiFi and other)
*#*#225#*#*- This code check your events in calendar
*#*#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. Access Google Partner setup
*#*#36245#*#*- Display a debug information about your email ID
*#*#8255#*#*- This code can be used to launch Google Talk Service Monitor
*#*#64663#*#*- Test hardware (Version, Bluetooth, Battery, OTG, Speakers)
*#*#7780#*#*- Reset mobile phone to factory settings.
*2767*3855#- Reset to factory settings
*#*#232338#*#*- Shows Wi-Fi Mac-address
*#*#34971539#*#* or *#34971539#- Phone 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#*#*- Display Ram version
*#*#1111#*#*- FTA Software version
*#*#2664#*#*- Touch-Screen test
*#*#0588#*#*- Test the proximity sensor
*#*#8351#*#*- Enables voice dialing logging mode
*#*#232331#*#*- Show Bluetooth Test Mode
*#*#232337#*#- Bluetooth address
*#*#7262626#*#*- Field test
*#*#0289#*#* OR *#*#0673#*#*- Audio test
*#*#0842#*#*- Check Backlight and Vibration
*#*#2663#*#*- This code for 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 Zen 303 QHD



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
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#- Divert all calls is turned ON
#21#- Divert all calls is turned OFF
*#21#- Check status of divert all calls
Configure 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#- Divert on no answer calls Enable
#61#- Divert on no answer calls Disable
*#61#- Check status of divert on no answer
Configure 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
USSD Codes For Barring 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
Activate or deactivate barring all calls
**330*code#- Barr all calls is turned ON
#330*code#- Barr all calls is turned OFF
*#330*code#- Check status of barr all calls
Codes for barring all outgoing international calls
**331*code#- Enable Barr all outgoing international calls on your phone
#331*code#- Disable Barr all outgoing international calls on your phone
*#331*code#- Check status of barr all outgoing international calls
Codes for barring all outgoing international calls except home country
**332*code#- Barr all outgoing international calls except home country is turned ON
#332*code#- Barr all outgoing international calls except home country is turned OFF
*#332*code#- Check status of barr all outgoing international calls except home country
Activate or deactivate barring all outgoing calls
**333*code#- Enable Barr all outgoing calls on your phone
#333*code#- Disable Barr all outgoing calls on your phone
*#333#- Check status of barr all outgoing calls
USSD Codes For Barring all incoming calls
**35*code#- Barr all incoming calls is turned ON
#35*code#- Barr all incoming calls is turned OFF
*#35#- Check status of barr all incoming calls
Activate or deactivate barring all incoming calls when roaming
**351*code#- Barr all incoming calls when roaming is turned ON
#351*code#- Barr all incoming calls when roaming is turned OFF
*#351#- Check status of barr all incoming calls when roaming
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 Zen 303 QHD



userHycCjkoMarch 04, 2024
The camera quality is average, but the battery life is disappointing. The device lacks some essential features like GPS and FM radio. Overall, it's a budget-friendly option with limited functionality.
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