From a land line, numbers starting 070 (personal numbering services) are charged at higher rates than 'normal' mobile numbers, yet most people are unaware of this, because they think all mobile numbers start with 07.
http://en.wikipedia.org/wiki/Persona...m.27s_response
Mobile phone companies that say calls to mobiles on the same network are free, but not other networks. Short of asking each person that you phone on a mobile 'what network are you on', how are you supposed to know. PITA. You can look up on tinternet the network that a mobile number is originally issued to, but if the recipient ports the number to a different network, then you are back to square one.
Mobile phone termination charges.
The price of text messages (SMS) on some call plans, when in reality (like e-mails), they cost virtually nothing to send.
Mobile phone companies charging to phone an 0800 number.
Mobile phone companies charging you to receive a call abroad, whether you want to or not. Roaming charges.
Mobile phone companies. Just blatant rip off merchants, IMO.