A mobile phone carrier is what company u have your phone plan under. It can be t-mobile, cingular, ATnT, and others.
If you lost your mobile phone, you will need to contact your carrier. If you have an Apple phone, you can check the Find My iPhone app to see where the phone is.
This depends on your cell phone carrier. Contact your carrier for this information.
Contact the phone provider or your telephone carrier.
You need to check with your cell phone carrier and they will have ringtones compatible for your phone
There is no such thing as a "g3" mobile phone. There are 3G mobile phones and one can get information on such phones at various mobile carrier and manufacturer websites such as Verizon or T-Mobile.
This will depend on the phone model and your phone carrier. You can call them to find out how to hide your number.
T-Mobile
An AT&T sim card will not work in an T-Mobile phone as it is locked to particular carrier itself... If you want to put your AT&T sim in your T-Mobile phone you can try unlocking your phone
It is deemed illegal to Flash your phone before the maturity of contract with the current carrier. However, if you still want to proceed with this, you can take your phone to a local dealer and have it flashed.
If you mean "make" as cell phone carrier, then the answer is T-mobile. Unfortunately, T-Mobile is the only carrier that sells any type of Sidekick cell phone. If you mean "make" as cell phone carrier, then the answer is T-mobile. Unfortunately, T-Mobile is the only carrier that sells any type of Sidekick cell phone.
Unlocked phones can be used with any carrier, so it will support T-Mobile.
The cell phone carrier that has the weakest signal varies by the market that you live in and even sometimes your location on your street. In the Utah area the carrier with the weakest signal is T-Mobile but that changes if you go to another area.