so far i have found 3 mobile network, carphone warehouse (not a network but shows good deals!), o2, tesco, vodaphone!
hope that helps!
wireless networks accesible from your mobile phone
by networks
A SIM free phone is one that does not have a SIM card included with the phone. This type of phone may not be able to be used with all networks. Some networks require a SIM card.
Iphone can do it.
Nowadays most mobile phone networks will offer you at least 3 phone options. Some of the most familiar networks that offer 3 or more phone options are Sprint, AT&T, Virgin Mobil among others.
When you get a new phone go into a network store and get the networks sim for your phone.
Broadview Networks provides phone service. The virtual phone system can be configured for any type and size of business. It is also supposedly easy to setup.
www.consumerreports.org has an excellent article and guide for choosing a wireless phone provider. They detail the pros and cons of all the major wireless phone networks and explain why people choose the networks they do.
Wifi networks are really wireless internet networks. Smart phones need the internet to function, so naturally your phone is going to be searching for a wifi network to use.
No Sprint is a CDMA network. AT&T is a GSM network. Only GSM networks use simcards. Other wise though you can switch sim cards between GSM networks if your phone is unlocked.
No - usually the mobile networks will do all the 'hard work' for you.
VoIP is an internet Voice Over Internet Protocol. Its a phone system that uses internet networks and not telephone networks.