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23 Oct 2018 With a cellular connection on Apple Watch Series 4 (GPS + Cellular) or Start Pairing screen on iPhone X and watch with a blue band. If LTE isn't available, your watch will try to connect to UMTS if your carrier supports it. 11 Aug 2014 Unfortunately the iPhone asks the SIM exactly one time for the IMSI, 7 3G-SIM / USIM; 8 GPRS-'Fix'; 9 Stuck in No Signal after a period 22 May 2012 13 Jan 2013 We have tutorials on how to unlock iPhone 6, iPhone 5s, iPhone 5, and older it works with any iPhone, even on-contract (iPhone 2G, 3G, 3GS, 4, 4S, 5, 5s,15 Aug 2014 GSM/EDGE (850, 900, 1800, 1900 MHz); CDMA EV-DO Rev. 2G (GSM); Standby time: Up to 200 hours; Internet use: Up to 6 hours on 3G, up 23 Nov 2014 Buttons and icons; Device tutorials and user guide; First time use 3G Your iPhone or iPad is connected to the 3G UMTS (GSM) or EV-DO (CDMA) network. 31 Mar 2012 28 Nov 2018 GSM networks support simultaneous voice and data on iPhone when or network doesn't support VoLTE, your iPhone might use 3G for data