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I've given my Samsung Galaxy S5 to a friend having first obtained the unlocking code from Vodafone. He is trying to use an O2 sim but cant unlock the phone using the code. He assures me he is using the correct sized SIM and has checked that the IMEI matches the unlocking email from Vodafone. Any ideas?
Is the o2 SIM.card active ?
Ie it connects to make calls and use data etc ?
Also some Samsung phones need a mastercode as well as the Nuc Unlocking Code.
Here are some ....
If there don't help then either pho e 191 and ask for this to be escualted to the Nuc Unlocking Department and they can also give you their direct email address too for help.
Or let the Vodafone Social Media Team here catch up with your thread to help.