SIM/Network Lock [ New ] Options on 26-11-2013 16:27 Hello, I am O2 pay Monthly costumer and I would like to use different SIM card in my phone. I am not from UK so when I am travelling to my country I would like to use my home SIM card. I have "network unlock code" provided by O2 but it does not work. After few online research I found that it does not work because my phone is "hardlocked" as they call it. Phone: Sony Xperia U or Sony Xperia ST25i When you press *#*#7378423#*#* and access the service menu > simlock I am seeing this menu: [X] Network 0 [ ] Network Subset 5 [ ] Service Provider 5 [ ] Corporate 5 SIM/Network Lock [ New ] Options on 26-11-2013 16:27 Hello, I am O2 pay Monthly costumer and I would like to use different SIM card in my phone. I am not from UK so when I am travelling to my country I would like to use my home SIM card. I have "network unlock code" provided by O2 but it does not work. After few online research I found that it does not work because my phone is "hardlocked" as they call it. Phone: Sony Xperia U or Sony Xperia ST25i When you press *#*#7378423#*#* and access the service menu > simlock I am seeing this menu: [X] Network 0 [ ] Network Subset 5 [ ] Service Provider 5 [ ] Corporate 5 Does anyone know how to reset the counter Network unlock code or if there is anything else I can do to fix that? My friend bought Xperia E1 in ASDA locked to O2. My friend put another sim card and entered phone lock code, and did not know that it must have a special code removing the lock operator's network :)) The phone is bought as Pay-as-you-go. How to solve this problem, he wants to use the phone on another network. Please do not post about buying another phone, this is not a solution :))