Minecraft Forums

For Android
1)Install Jota Text Editor on Google Play

2)After you install the app go to your file manager and go to games/com.mojang/minecraft pe and tap "option.txt" and it will start using jota or open jota text editor and find "open" in menu then find the "option.txt"

3)Edit the number of the render distance,change the number into "0"

4)Open minecraft pocket edition,open a world and done you have no fog in your game,if it lags and stuck into "saving chunks" press home and go to settings>applications>manage apps>minecraft pocket edition and tap force close and if it turns back into the normal distance do the steps again,and it lags a little hope it works because I test it

For iOS users, jailbroken or not, here's a guide:
Jailbroken:

1. Go into iFile or any other file-manager app
2. Navagate to /var/mobile/Applications
3. Find the folder for Minecraft PE
4. Navigate Documents→ games→ com.mojang→ minecraftpe
5. Open "options.txt" in a text editor 6. Change gfx_renderdistance to 0

Non-Jailbroken: The process for non-jailbroken users is very similar to jailbroken users.

1. Use a file manager on your computer such as iFunBox or iExplorer
2. Plug your iOS device into your computer
3. Start from step 3 in the jailbroken guide above

This is pretty interesting...but it also works for iOS, so you might want to change the title.

For iOS users, jailbroken or not, here's a guide:
Jailbroken:

1. Go into iFile or any other file-manager app
2. Navagate to /var/mobile/Applications
3. Find the folder for Minecraft PE
4. Navigate Documents → games → com.mojang → minecraftpe
5. Open "options.txt" in a text editor
6. Change gfx_renderdistance to 0

Non-Jailbroken:
The process for non-jailbroken users is very similar to jailbroken users.

1. Use a file manager on your computer such as iFunBox or iExplorer
2. Plug your iOS device into your computer
3. Start from step 3 in the jailbroken guide above

Here you go I change the title and the instructions by copying yours

Thanks

I tried this using iFunbox and everytime I save any changes, they get reverted back to original

hey man, i just wanted to let you know that i shared this on reddit.

http://redd.it/1m466y

gave 100% credit to you and linked back to this post as well - encouraging people to give you some rep for it.

cheers, -u.