No Signal After Selecting 3G Only? Fix Now

Sometimes you get 'no signal' on your Android device after setting Network Mode to 3G Only. The funny thing about this issue is that you usually don't get to understand entirely how this problem came about.

Well, I'll tell you one very common cause of this problem: IMEI/NVRAM tweaking.

Having modified my Mediatek device's IMEI number countless times due to http://pinkberrylicious.blogspot.com /2016/04/how-to-change-modify-of-fix-null-imei.html" target="_blank">null IMEI, caused by flashing incompatible or corrupt custom files- my device got this problem. Luckily for me, I already made a stock backup of my device's NVRAM.

Fixing no signal in 3G only network mode

Requirements

1. MTK Droid Tools - Download
2. Faulty Mediatek (MTK) Device (of course)

If you already have a backup of your phone's IMEI/NVRAM, follow the guide below to fix. If not, read further downwards.

Step One: Unpack downloaded Mtk Droid Tools zip to your desktop and launch MTKDroidTools.exe 

Step Two: Enable USB debugging on your phone and connect to Computer. Once Droid Tools detect and load your device details, select IMEI/NVRAM.

Step Three: From the popup display, click Restore 

Step Four: You will be requested to select the .bin NVRAM backup of your phone. Navigate to the folder where it is located and select it.

Step Five: After selecting the .bin file, you will be prompt with another popup to select .tar. Select the file and continue

Done. Now reboot your device.

Step Six: Go to Settings > More... > Mobile networks > Network Mode and select 3G only.

Yeah! It's that easy.

If you don't already have an IMEI/NVRAM backup of your phone, you will have to make a backup from some other phone. It must be the same device as yours, else you'll end up bricking your phone and that would entirely be your fault. You've been warned.

Connect the good phone to your computer and follow the instructions above, but instead of selecting Restore as instructed in Step Three, select Backup.

Once backup is complete, connect the faulty phone to computer and Restore backup as per instructions above. On completion of the restore process, reboot your phone. Done.

To return your phone's default IMEI number, http://pinkberrylicious.blogspot.com /2016/04/how-to-change-modify-of-fix-null-imei.html" target="_blank">click here.

Got questions? Use comment box below...

Don't forget to share this post with friends.

Auto-Port and Flash CWM Recovery On MTK Without Root

About two weeks ago, I uploaded a video guide about http://pinkberrylicious.blogspot.com /2016/06/non-root-easily-port-and-flash-cwm.html" target="_blank">portingand flashing Clockworkmod (CWM) recovery on any Mediatek (MTK) device without root access. For the benefit of those who have  one difficulty or another watching the video tutorial, I have made this text/image only guide to help you flash cwm without root, on your mtk device. Read below to learn how.

Requirements

• Stock boot.img
• MTK Droid Tools - Download

Porting and Flashing CWM On MTK Automaically

• Download MTK Droid Tools and extract to any directory or your desktop
• Launch MTK droid tools by clicking MTKdroidTools.exe
• Enable USB debugging on your MTK device
• Connect the device to Computer via USB cable
• Once device is fully initialized in MTK DroidTools, click on root, backup, recovery tab

• Click Recovery and Boot

• Select stock boot.img file
• From the popup question- To make CWM recovery automatically? ...Select Yes

• Wait a few seconds for the process to complete.
• Once complete, navigate to where your MTK Droid Tools directory is and open recovery folder.
• Your device's patched boot and newly port Clockworkmod recovery should be found in that folder.

• Copy the two files and flash via fastboot, or SP Flashtool- if you have your stock firmware scatter file.

Flashing via fastboot ( http://pinkberrylicious.blogspot.com /2016/04/universal-adb-and-fastboot-driver.html" target="_blank">learn how to setup)

• Copy both files to your fastboot directory
• Rename patched boot to boot.img and recovery to recovery.img
• Reboot your phone to fastboot mode and connect via USB to computer
• Now launch Command Prompt and issue the following commands

fastboot flash boot boot.img
fastboot flash recovery recovery.img

• Finally, give the command below to boot the device into system. But while it's booting up, use correct button combination for your device to boot into recovery mode for the first time.

fastboot reboot

For some MTK devices, you have to boot with power button + volume up, then select recovery mode from the listed options. While others can be access by holding power button + volume down.

Want to watch full video guide about porting and flashing Clockworkmod recovery on MTK devices without root access? http://pinkberrylicious.blogspot.com /2016/06/non-root-easily-port-and-flash-cwm.html" target="_blank">Click here.

If you have any questions or experience problems using this guide, please post in comments section below so I can help you out.

Auto-Port and Flash Clockworkmod Recovery On Any MTK device

In my previous post about custom recovery, I shared a simple video guide on http://pinkberrylicious.blogspot.com /2016/06/non-root-easily-port-and-flash-cwm.html" target="_blank">how to port and flash clockworkmod recovery on non-rooted Mediatek devices without having to manually modify any file.

The guide in this video explains briefly how to automatically port and flash Clockworkmod (CWM) recovery on any and all rooted Mediatek (MTK) phones.

Watch video below. If you're unable to watch this video or prefer a simple text guide, I'll be posting that soon.