Could it be you've bought the US Nexus 5? There's two versions. North America: GSM: 850/900/1800/1900 MHz CDMA: Band Class: 0/1/10 WCDMA: Bands: 1/2/4/5/6/8/19 LTE: Bands: 1/2/4/5/17/19/25/26/41 Rest of World: GSM: 850/900/1800/1900 MHz WCDMA: Bands: 1/2/4/5/6/8 LTE: Bands: 1/3/5/7/8/20 In the UK (and Europe) we generally use 3/7/20 which is what the Jolla supports.