This tweak came up since two days ago although many people are not aware while some are aware. It is called "MYMTN" free browsing. It doesn't require any additional data subscription. It's just like MTN 0.0kb trick but in this case what you need to do is just send SMS MYMTN to 5018
After that, you will get a reply like this below
"Hi check out mymtn on your Android phone.
Download it from http://smartapp.mtnnigeria.net:8080/dls/mtnn"
Use this APN
To Tweak it on Psiphon or Syphonshield,
copy the link from the SMS received and use it like this while setting Psiphon Pro Lite Handler
Proxy Type: Real Host
Proxy Server: http://smartapp.mtnnigeria.net:8080/dls/mtnn
Real Proxy type: default
Real Proxy Server:80
Then save and select USA as your region. Don't think connect through HTTP proxy from advanced option. Go back and connect.