Graham also offered to supply methylphenidate, a class B drug known by the brand name Ritalin, on January 14.
Over six months Graham offered a total of 9.44 grams of meth and an unknown amount of Ritalin, the summary said.
When spoken to by police, Graham said that in some of the messages he was not actually intending to sell meth – he just led the recipient to believe he was, so that he could take their money and rip them off. He also claimed that on one occasion a friend was using his cellphone.
At the time of his meth dealing, Graham was waiting to be sentenced on 13 other charges, including for his role in a serious crash in Christchurch last year.