More companies have signed since then: Tele2 AB, Mobitel EAD, Belgacom Mobile S.A., Mobilkom Austria A.G., TDC Mobil Norden, Wind Hellas Telecommunications SA, Alands Mobiltelefon Ab, BTC Mobile EOOD (Vivatel), CYTA, PT Luxembourg and Mobitel d.d.
Später folgten weitere Unternehmen: Tele2 AB, Mobitel EAD, Belgacom Mobile S.A., Mobilkom Austria AG, TDC Mobil Norden, Wind Hellas Telecommunications SA, Alands Mobiltelefon Ab, BTC Mobile EOOD (Vivatel), CYTA, PT Luxembourg und Mobitel d.d.