(as the second SIMs all use 2G).
Might depend where you are. Some 2G networks are being switched off this year which might mean selling dual-SIMmers isn't a good idea (as the second SIMs all use 2G).
Yep, no probs. Forget about which number slots your sims are in. Only one sim can have a 3/4G connection at a time (be it voice or data). The other sim is then on 2G. Thus when 2G network is turned off, that sim that is running on 2G has no connection (voice or data).can you describe this a bit to me? Windows phones can only use 1 sim for DATA at once. so if you choose Sim1 for data it will use (2G/3G or 4G) depending on the setting you selected. if u switch to Sim 2 it still can use 2G 3G or 4G....