CDMA coverage is very strong in the United States, particularly in rural areas, but GSM service has a larger global footprint (it's the standard in Europe, for example) and GSM phones use the convenient SIM cards, which you allow you to, among other things, switch phones more easily. Also, when taken on a global scale, GSM users will find a wider selection of handsets.
With that in mind, if you travel overseas frequently or you enjoy switching out your phone often for the newest model available, then GSM is the better choice. Not all GSM phones will work overseas, however, so be sure to read CNET's Quick guide to world phones. But if you'll be making calls mostly in the United States, then CDMA is an equally good option. What's more, some CDMA phones now also support GSM networks for international use...
I do not have any information about the cell p[hones supporting both GSM and CDMA features. As far as I know that both are the different phones as one cannot use GSM network in CDMA phone as CDMA feature is connected to the hardware of the phone. So, one cannot change it. But, in GSM phone, it is just a matter of SIM card.
1. Ask around about the best carrier. Coverage and call quality vary widely between the six national carriers. The carriers will tell you that they're perfect, so ask neighbors, friends, and co-workers about who has the best coverage where you live, work and travel.
2. Pay attention to battery life. A dead phone is no phone at all, so look for a phone's "continuous talk time" rating. Assume you'll be able to go a day without charging for each hour of talk time.
3. Test the speaker. Usually, you'll be able to make local calls with a test phone at the wireless store. Make sure voices come through loud enough and clear enough.
4. Take a hands-off approach when driving. Several states now require you to use a hands-free kit in your car. For a car phone, look for speaker-independent voice commands so you don't have to touch the phone to dial. Try to find a phone with Bluetooth wireless capability for the widest selection of wireless headsets.
5. Keep an eye out for nickel-and-diming. Your base plan may not include instant messaging, picture messaging, e-mail access or calls in rural areas. If you're going to do any of those things, make sure it's included.
as soon as you get your phone/battery, you should charge the battery overnight and dont use the phone until the battery is fully charged. I dont know why this is but i am positive that this is what you do since i have had like 5 new phones. -hope that answers ur question
The first step is to sit down and think about what you want the phone. Whether you plan to use if you want to work as call the batter life and a good agreement for high volume daily use to landlines and various networks. Alternatively, it may be for personal use, a fashion accessory that needs to look cool and all the latest gadgets and functions so you can wow your friends.
The first step is to sit down and think about what you want the phone. Whether you plan to use if you want to work as call the batter life and a good agreement for high volume daily use to landlines and various networks. Alternatively, it may be for personal use, a fashion accessory that needs to look cool and all the latest gadgets and functions so you can wow your friends.
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