yes
To set up a dual SIM phone using only one SIM, insert the SIM card into the primary SIM slot as specified in the phone's manual. Power on the device, and it should automatically detect the SIM card. Go to the settings menu, select "Network & Internet" or "Connections," and ensure that the mobile data and network settings are configured for the active SIM. You can disable the second SIM slot if desired to avoid any confusion.
yes
it is not possible on a mobile phone, but there are texting applications on the internet that do not use a sim card. YOu can text people for free by just using special websites on the internet. It only costs when you reply to them
Your phone is probably an iPhone that is dis-acativated, in other word's you have no internet. You can still "jailbreak" it by removing you SIM card and "jailbreak" it on another iPhone that DOES and internet and just re-insert the SIM.
Unless this computer is a netbook, there is slim chance it has a sim card, if you would like to use the internet on the go, get a usb adapter that comes with a internet package from a major phone network.
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.
Orange 3g is a network that is used to provide phone and internet in the UK. The SIM card you are going to need will vary with the phone you are using. Orange offers SIM cards with min plans for about $25. This price is for the SIM card used in the iPhone. If you have an iPhone 4 Orange also offers their micro SIM, which is smaller than a standard SIM for the same price
ALL companies will let you do that. You simply need to have the phone unlocked - so it will accept the SIM card from the new company.
Yes, that is usually the case with a SIM phone.
Put the SIM card from the new phone into the old one. Copy the contacts from the old phone's memory to the SIM card. Put the SIM car back in the new phone - then - either copy the contacts to the new phone's memory - or leave them on the SIM card. Either way - the new phone will find them.
IP phones and smart phones, phones that is capable of connecting to internet. Dual sim can be installed by just adding extra sim jacket at back of battery cover.