3 issues with my Galaxy S II
I'm currently having 3 problematic issues with my Samsung Galaxy S II, which are...
1) Cannot make/receive calls or send/receive text messages.
2) When I try to change some things in Settings>Call, it says 'Network or SIM card error' and some of the options are greyed out so I can't change them.
3)When I try to connect to a Mobile network in Settings>More...>Mobile networks>Network Operators, it says 'Unable to connect. Try later', it happens with all of the available networks which are Virgin,O2 -UK, 3 UK, virgin (Yes, it was repeated) and Vodafone UK.
Any help or advice would be greatly appreciated...