Ericsson launched the PH337 in 1995, designed for the One2One PCN network. At the time it was the smallest PCN phone on the market. It was One2One's flagship phone in 1997, retailing at £100.
The PH337 boasted 120 minutes of talk time from a single battery charge.
Ericsson continued to improve the GH337. In 1996 the GH388 came along which was 3mm slimmer and had an improved battery life. The PCN equivalent was the PH388.