[Samsung Galaxy J7 Questions & Answers] kjslabber:
I have been playing around trying to get my phone to turn on being wifi hotspot since I got this phone (August 2016). When you try to turn on hotspot in settings always got the prompt that I was not subscribed on my plan to use hotspot. Today I was browsing on internet and found a recent youtube video on how to turn on your Boost Mobile phone to be a hotspot. Figured I would give it a try. I have been playing with my APN settings anyway to try to get LTE signal at home because I have terrible coverage here in my house. Basically it was very simple and I can try to walk anybody through the process if they want to try it. I wasn't sure because I changed my plan on the 26th of this month because Virgin changed plans from $40 per month with 4 gb high speed data to $35 per month with 5 gb high speed data. (good thing) My hotspot now works on the phone. Would like someone else to try it out and see if it was the changes I made. Here is what I did. Remember I have rooted phone.

1. I used root browser (ES File Manager) and went to -device/system/build.prop and opened in opened build.prop in a text editor. Be careful not to modify anything, just look or your phone may not reboot when you try to. Go down towards the end of the file and find under ADDITIONAL_BUILD-PROPERTIES a line that reads ro.cdma.default_numeric= 6 digit number. Write this number down and close the text editor, don't save if anything got changed by mistake.

2. Go to Play Store and download an apk called APN Backup and Restore. I had to install it then used an backup apk to backup Apn Backup and Restore somewhere in your phone where you can find it. Un-install Apn Backup and Restore apk again. You have to re-install it as a system apk before it will work.

3. Go to your back up of your apk using root browser and copy the apk to device/System/priv-app folder and set the permissions for the apk to rwx-r-x-r-x. Close root browser and reboot your phone.

4. The apk APN Backup and Restore should now be installed on your phone as a system apk. Open the apk and in the top right corner touch the 3 small dots and on the dropdown touch the disable ICS check. Reboot the phone. Open Apn Backup and Restore and touch the button "Backup APNs". The apk should prompt you to name the file which you can call anything just leave the .xml at the end so you can re-install them after you modify the file. The file should be in your phone in a folder called APNBack-upRestore in your internal storage.

5. I would go to the Apk and backup the APNs again and call it something different so you and re-stall them again if something goes wrong and you can't get your data to work again.

6. Using a text editor open up the first backup of the APNs. In my case at the bottom of the file the last 4 groups of lines that start with <apn name="APN0 for example there will be an entry that says- numeric="311490". This should match the number you wrote down from the build.prop file earlier. This is the APN for Virgin Mobile.

7. At the bottom of each of these groups of apn settings there will be an entry -- type="default,mms,fota". I went in and edited each of the 4 apns to read- default,supl,mms,fota,dun in between the " ". Save the file in the text editor. Remember which one of the backup files you modified.

8. Now in order to install your modified file into your phone the files must be in that folder in phone storage called APNBack-upRestore. Close all your root browser and text editor apks and open the apk APN Backup and Restore. Remember to make sure you have an unmodified copy of your apns before you go any further. In the apk hit the button delete APNS. It will prompt you to make sure thats what you want to do. Then hit the button to Restore APNs. It will ask you which file you want to restore. Click the button next to the modified version of your APNs. It should install your modified version of the APNs.

9. Close the apk and reboot your phone. After reboot go into settings and under Hotspot and Tethering turn on Hotspot. It should bring up a screen you can change the security password if you wish. Once you turn it on when it completes you should get the wifi symbol in status bar left corner.

If you have Wifi turned on it will turn it off. I tested connection with my desktop and laptop and both worked. Good luck and hope it works for you. I can't believe that Virgin Mobile changed their policy when I changed my plan but it could be possible.