| Specification Lenovo Tab 4 |
| Root Lenovo Tab 4 |
| Unlock Lenovo Tab 4 |
| Firmware Lenovo Tab 4 |
| Developer Mode Lenovo Tab 4 |
| Bypass Lock Screen Lenovo Tab 4 |
| Lenovo Tab 4 Factory Reset |
| Bypass FRP Lenovo Tab 4 |
| Screenshot Lenovo Tab 4 |
|
OS: Android 7.1 (Nougat) RAM: 2GB Display: 8.0 inch Camera: 5 MP |
| *#06# | - IMEI (International Mobile Equipment Identity) number |
| *#*#3646633#*#* or *#*#54298#*#* | - Engineering Mode (for smartphones based on MTK processor) |
| *#*#4636#*#* | - Display information about Phone, Battery and Usage statistics |
| *#*#225#*#* | - 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#*#* | - Access Google partner setup (RLZ debug Interface) |
| *#*#36245#*#* | - Email debug information |
| *#*#8255#*#* | - Google Talk Service Monitor in Android mobile phones will monitor Google Talk host address and port, your Google JID, your device ID, GTalk connection status, your connection history |
| *#*#64663#*#* | - Test hardware (Version, Bluetooth, Battery, OTG, Speakers) |
| *#*#7780#*#* | - Return to factory setting for hard reset but remove applications only. |
| *2767*3855# | - Reinstall factory ROM |
| *#*#232338#*#* | - Displays Wi-Fi Mac-address |
| *#*#34971539#*#* or *#34971539# | - Display 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#*#* | - 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 Screen Test |
| *#*#3264#*#* | - Show Ram version |
| *#*#1111#*#* | - FTA Software version |
| *#*#2664#*#* | - Touch-Screen test |
| *#*#0588#*#* | - Proximity sensor test |
| *#*#8351#*#* | - Enables voice dialing logging mode |
| *#*#232331#*#* | - Show Bluetooth Test Mode |
| *#*#232337#*# | - Bluetooth address |
| *#*#7262626#*#* | - Field test |
| *#*#0289#*#* OR *#*#0673#*#* | - Audio test |
| *#*#0842#*#* | - Used for the test of Vibration and Backlight |
| *#*#2663#*#* | - Touch Screen Version (Firmware 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 |
| 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 |
| GSM codes for 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# | - Turn On Divert all calls |
| #21# | - Turn OFF Divert all calls |
| *#21# | - Check status of divert all calls |
| 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 |
| Configure 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 |
| Diversion in case of "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 |
| Barr 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# | - Activation Barr all calls |
| #330*code# | - Deactivate Barr all calls |
| *#330*code# | - Check status of barr all calls |
| All outgoing international calls barring | |
| **331*code# | - Barr all outgoing international calls Activate |
| #331*code# | - Barr all outgoing international calls Deactivate |
| *#331*code# | - Check status of barr all outgoing international calls |
| GSM codes for barring all outgoing international calls except home country | |
| **332*code# | - Turn On Barr all outgoing international calls except home country |
| #332*code# | - Turn OFF Barr all outgoing international calls except home country |
| *#332*code# | - Check status of barr all outgoing international calls except home country |
| Activate or deactivate barring all outgoing calls | |
| **333*code# | - Barr all outgoing calls Activate |
| #333*code# | - Barr all outgoing calls Deactivate |
| *#333# | - Check status of barr all outgoing calls |
| Barr all incoming calls | |
| **35*code# | - Activation Barr all incoming calls |
| #35*code# | - Deactivate Barr all incoming calls |
| *#35# | - Check status of barr all incoming calls |
| Activate or deactivate barring all incoming calls when roaming | |
| **351*code# | - Activation Barr all incoming calls when roaming |
| #351*code# | - Deactivate Barr all incoming calls when roaming |
| *#351# | - Check status of barr all incoming calls when roaming |
| All incoming calls barring | |
| **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. | |
 | WypXoka | March 11, 2024 |
| The tablet has a decent camera, good battery life, and smooth performance. It offers a variety of functions and features, but lacks water resistance and high screen resolution. | ||
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