3 ms·GSM, not CDMA.by manderley 4y agoGSM, not CDMA.post-it 4y agoCDMA on Verizon and Sprint in the USA and Bell and Telus in Canada, at the time.gridder 4y agoYeah but we’re talking about UK here…. So GSM is correct.sbuk 4y ago"> August 2002: Shazam launches as a text message service based in the UK." AFAIR, we never had CDMA in the UK, so what Verizon et al. were using is irrelevant.