Hi there, Few days ago, I received a refurbished Mi2s http://xiaomi.eu/community/threads/help-fake-or-not.27550/ Apart from the fact it was supposed to be brand new, everything is working fine.... except network. It first came with MIUI 4.10.31, then I upgraded to last xiaomi.eu MIUI v6 ( 5.5.15). For some reason, my PC (windows 7) don't recognize the device, I can only see it thanks to MiPhone Manager. Anyway, I managed to downgrade to last official 4.1.1 MIUI 5 JLB54.0 ROM using MiFlash but still no network (while the SIM card is fully detected). All I can say is that it's not a problem with the SIM card since it has no issue on my Redmi 1S. I tried *#*#4636#*#* then switch to "gsm cdma auto prl" but it didn't work. I'm starting to think this is a hardware problem (and it might be the reason why this is a refurbished phone). Any help would be appreciated. PS : I'm from France and my operator is well-known (SFR) so it should have nothing to do with the apn imo. Thanks in advance.