The provider
When your cell phone is unlocked, you can use it with any service provider's network. The original service provider will have to unlock the cell phone for you.
A provider of cell phones its a business that sells phones to people
Mobile phone prefix codes are irrelevant - since it's now possible to change your service provider and retain your number. For example, someone on t-mobile could change to orange and take their number with them - making the prefix irrelevant !
There is no single cell phone prefix for the USA. Most cell phones are given numbers with the local area code of their owner.
If that cell phone provider is using the European standard phone system. Most do not, but I believe T-Mobile does. You'll need to ask you cell phone provider.
it means cell
The best cell phone provider in Canada is Bell. It is the most widely used telephone provider. It is used in cell phones, payphones, and even land line telephones
Depending on who your cell phone provider is, you will be able to search for a temporary used phone on Ebay. Just search for which phone manufacturers are supported by your cell phone provider and then search Ebay. You will often be able to find used or refurbished phones that are affordable for you to purchase until you are able to upgrade with your cell phone provider.
You cannot "De-brand" a cell phone. You can however unlock a cell phone. if that cell phone's software and hardware are compatible with another provider's network, then that unlocked phone can be used with the other provider. Your best bet is to ask the prospective service provider if the software/hardware on the phone that you want to unlock is compatible with their network before investing in the phone
Contact your cell phone provider.
Contact your service provider