If you aren’t already aware of this exploit well here ya go!
- Log into Runescape through mobile
- Click the bond icon on the mini map
- Purchase the 1 month membership package that includes a 7 day membership trial
- Cancel the membership through google play store right after subscribing (Does not charge your card, don’t worry)
This will work a few times before your information gets flagged, if you would like to abuse it you will need to buy 3 things: A $1 Virtual credit card, verified Gmail account & a proxy.